Merge pull request #2 from Dvorinka/feat/monitoring-merge

feat: monitoring merge — importers, monitors, domains, systems, ops, launch prep

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,31 @@
+name: Bug report
+description: Something is broken
+labels: [bug]
+body:
+  - type: textarea
+    id: what
+    attributes:
+      label: What happened
+      description: What you did, what you expected, what happened instead.
+    validations:
+      required: true
+  - type: textarea
+    id: logs
+    attributes:
+      label: Logs
+      description: Relevant server logs or browser console output.
+      render: text
+  - type: input
+    id: version
+    attributes:
+      label: Dash version
+      description: Image tag or release version.
+      placeholder: v0.7.0
+  - type: dropdown
+    id: install
+    attributes:
+      label: Install method
+      options:
+        - Docker
+        - Binary
+        - Built from source

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,16 @@
+name: Feature request
+description: Suggest an addition
+labels: [enhancement]
+body:
+  - type: textarea
+    id: problem
+    attributes:
+      label: What problem does this solve
+      description: Concrete use case, not just "add X".
+    validations:
+      required: true
+  - type: textarea
+    id: idea
+    attributes:
+      label: Proposed shape
+      description: Optional. How it might look or work.

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,11 @@
+## Summary
+
+<!-- What does this change and why? -->
+
+## Test plan
+
+- [ ] `npm run typecheck` + `npm run lint` + `npm run build` green
+- [ ] `go build ./...` + `go vet ./...` + `go test ./...` green
+- [ ] Smoke-tested the affected flow manually
+
+<!-- Screenshots for UI changes. -->

.github/workflows/release.yml

@@ -0,0 +1,71 @@
+name: release
+
+on:
+  push:
+    tags: ["v*"]
+
+permissions:
+  contents: write
+  packages: write
+
+jobs:
+  binaries:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 24
+          cache: npm
+      - run: npm ci
+      - run: npm run build
+
+        # go:embed all:dist reads internal/web/dist at compile time.
+      - run: rm -rf apps/backend/internal/web/dist && cp -r apps/frontend/dist apps/backend/internal/web/dist
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version-file: apps/backend/go.mod
+          cache-dependency-path: apps/backend/go.sum
+
+      - uses: goreleaser/goreleaser-action@v6
+        with:
+          distribution: goreleaser
+          version: "~> v2"
+          args: release --clean
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: docker/setup-buildx-action@v3
+
+      - uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - uses: docker/metadata-action@v5
+        id: meta
+        with:
+          images: ghcr.io/${{ github.repository }}
+          tags: |
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=raw,value=latest
+
+      - uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: infra/Dockerfile
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

.gitignore

@@ -20,6 +20,8 @@ data/*
 # misc
 .DS_Store
 coverage/
+dist/
 
 # local tooling artifacts
 .playwright-mcp/
+.playwright-cli/

.goreleaser.yaml

@@ -0,0 +1,61 @@
+version: 2
+
+project_name: dash
+
+before:
+  hooks:
+    # The embedded UI must be built and copied into internal/web/dist before
+    # any Go build. The release workflow does this; fail loudly here if the
+    # stub is still in place.
+    - sh -c 'test -d apps/backend/internal/web/dist/assets'
+
+builds:
+  - id: dash
+    dir: apps/backend
+    binary: dash
+    main: ./cmd/dash
+    env: [CGO_ENABLED=0]
+    goos: [linux, darwin, windows]
+    goarch: [amd64, arm64]
+    ldflags: ["-s", "-w", "-X main.version={{.Version}}"]
+
+  - id: dash-agent
+    dir: apps/backend
+    binary: dash-agent
+    main: ./cmd/dash-agent
+    env: [CGO_ENABLED=0]
+    goos: [linux]
+    goarch: [amd64, arm64, arm]
+    goarm: ["7"]
+    ldflags: ["-s", "-w", "-X main.version={{.Version}}"]
+
+archives:
+  - id: dash
+    ids: [dash]
+    formats: [tar.gz]
+    name_template: "{{ .ProjectName }}_{{ .Os }}_{{ .Arch }}{{ with .Arm }}v{{ . }}{{ end }}"
+    format_overrides:
+      - goos: windows
+        formats: [zip]
+    files: [README.md, LICENSE]
+  - id: dash-agent
+    ids: [dash-agent]
+    formats: [tar.gz]
+    name_template: "{{ .ProjectName }}-agent_{{ .Os }}_{{ .Arch }}{{ with .Arm }}v{{ . }}{{ end }}"
+    files: [README.md, LICENSE]
+
+checksum:
+  name_template: "checksums.txt"
+
+changelog:
+  use: github
+  sort: asc
+  filters:
+    exclude:
+      - "^docs:"
+      - "^chore:"
+      - "^test:"
+
+release:
+  footer: |
+    Docker: `docker pull ghcr.io/dvorinka/dash:{{ .Tag }}`

CHANGELOG.md

@@ -0,0 +1,87 @@
+# Changelog
+
+All notable changes to Dash. Format follows
+[Keep a Changelog](https://keepachangelog.com/en/1.1.0/); versions follow
+[Semantic Versioning](https://semver.org/).
+
+## [Unreleased]
+
+## [0.7.0] — 2026-09-21
+
+### Added
+
+- Incidents with open/ack/resolve/close lifecycle and per-incident update
+  timeline; monitors auto-open and auto-resolve incidents on transitions
+- Maintenance windows that suppress monitor alerts
+- Public status pages at `/status/:slug` (unauthenticated, per-page monitor
+  and system selection)
+- SVG badges: `/api/badge/monitor/:id.svg`, `/api/badge/domain/:id.svg`
+- Prometheus metrics at `/api/metrics`
+- CSV bulk import (`/api/import/csv`) and monitors/domains/systems in JSON
+  export
+- Generic webhook notifications (`notify_webhook` setting): monitor up/down
+  and domain events, Slack/Discord/ntfy-compatible payload, `/api/notify/test`
+
+## [0.6.0] — 2026-09-21
+
+### Added
+
+- System monitoring: `systems` + `system_stats`, bearer-token push ingest
+  (`/api/systems/ingest`), offline detection
+- `dash-agent` binary: Linux collector for CPU, memory, swap, disk, network,
+  load, uptime, temperatures, and Docker container state
+- Systems list and detail pages with Recharts graphs; system board widget
+
+## [0.5.0] — 2026-09-21
+
+### Added
+
+- Domain watch: RDAP + TCP-WHOIS lookup, WHOIS parsing, DNS records
+  (NS/MX/TXT/A/AAAA), TLS certificate details, host geo, DNS/email/hosting/
+  certificate provider detection
+- Daily refresh scheduler, manual refresh, check history
+- Domain list and detail pages, expiry and SSL countdowns, domain board widget
+
+## [0.4.0] — 2026-09-21
+
+### Added
+
+- Uptime monitors: HTTP, TCP, ping, DNS, keyword, JSON-path, and push types;
+  interval/timeout/retries config, heartbeat history, 24h/30d uptime stats
+- Monitor scheduler, check-now endpoint, push ingest (`/api/push/:token`)
+- Monitor list and detail pages, monitor board widget, service-to-monitor
+  creation checkbox
+- Importers: Homepage `services.yml`, Homarr JSON, Dashy `conf.yml`
+
+## [0.3.0] — 2026-09-17
+
+### Added
+
+- Index and Console board renderers (four total), command palette (⌘K),
+  icon CDN suggestions
+
+## [0.2.0] — 2026-09-17
+
+### Added
+
+- Widget layer: Go fetcher registry, config-field metadata, 30s TTL cache
+- Pi-hole, AdGuard Home, Immich, and clock widgets; per-widget config UI
+
+## [0.1.0] — 2026-09-17
+
+### Added
+
+- Board MVP: sections, items, multi-URL services, drag-drop, collapse state
+- Bento and Cards renderers, dark/light themes, icon upload + letter fallback
+- Server-side status pings with up/down chips
+- Single Go binary serving the embedded React UI; SQLite via goose migrations;
+  Docker image on distroless
+
+[Unreleased]: https://github.com/Dvorinka/Dash/compare/v0.7.0...HEAD
+[0.7.0]: https://github.com/Dvorinka/Dash/compare/v0.6.0...v0.7.0
+[0.6.0]: https://github.com/Dvorinka/Dash/compare/v0.5.0...v0.6.0
+[0.5.0]: https://github.com/Dvorinka/Dash/compare/v0.4.0...v0.5.0
+[0.4.0]: https://github.com/Dvorinka/Dash/compare/v0.3.0...v0.4.0
+[0.3.0]: https://github.com/Dvorinka/Dash/compare/v0.2.0...v0.3.0
+[0.2.0]: https://github.com/Dvorinka/Dash/compare/v0.1.0...v0.2.0
+[0.1.0]: https://github.com/Dvorinka/Dash/releases/tag/v0.1.0

CODE_OF_CONDUCT.md

@@ -0,0 +1,38 @@
+# Code of Conduct
+
+This project follows the [Contributor Covenant](https://www.contributor-covenant.org/),
+version 2.1.
+
+## Our pledge
+
+We pledge to make participation in this project a harassment-free experience
+for everyone, regardless of age, body size, visible or invisible disability,
+ethnicity, sex characteristics, gender identity and expression, level of
+experience, education, socio-economic status, nationality, personal appearance,
+race, religion, or sexual identity and orientation.
+
+## Our standards
+
+Examples of behavior that contributes to a positive environment:
+
+- Demonstrating empathy and kindness toward other people
+- Being respectful of differing opinions, viewpoints, and experiences
+- Giving and gracefully accepting constructive feedback
+- Accepting responsibility and apologizing to those affected by our mistakes
+- Focusing on what is best for the community
+
+Examples of unacceptable behavior:
+
+- The use of sexualized language or imagery, and sexual attention or advances
+- Trolling, insulting or derogatory comments, and personal or political attacks
+- Public or private harassment
+- Publishing others' private information without explicit permission
+- Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Enforcement
+
+Instances of unacceptable behavior may be reported to the maintainer via
+GitHub (@Dvorinka). All complaints will be reviewed and investigated promptly
+and fairly. The full enforcement guidelines are at
+https://www.contributor-covenant.org/version/2/1/code_of_conduct.html

CONTRIBUTING.md

@@ -0,0 +1,60 @@
+# Contributing
+
+Thanks for considering a contribution. Dash is a small, deliberate codebase —
+read [AGENTS.md](AGENTS.md) and [ROADMAP.md](ROADMAP.md) first; the roadmap is
+canonical for what gets built and when.
+
+## Setup
+
+Requires Go 1.24+ and Node 20+.
+
+```sh
+npm install
+npm run generate       # regenerate the TS client from openapi.yaml
+npm run dev            # vite dev server on :5173, proxies /api to :8080
+```
+
+```sh
+cd apps/backend
+DASH_DEV=1 go run ./cmd/dash   # API on :8080
+```
+
+## Rules of the house
+
+- `openapi.yaml` is the API contract. Change it first, then
+  `npm run generate`. Never hand-write API types in the frontend.
+- All schema changes go through goose migrations in
+  `apps/backend/internal/db/migrations` — `NNNN_name.sql` with `-- +goose Up`
+  and `-- +goose Down`.
+- Board renderers share state, drag-drop, and popover primitives. Never
+  reimplement them per renderer.
+- No auth, no YAML-as-source-of-truth, no external database. These are
+  non-goals for v1.
+- Standard library before dependencies; existing helpers before new ones.
+- User-visible strings go through `t("key")` from `src/i18n` — add the key to
+  `en.ts` rather than inlining literals in new UI.
+
+## Before pushing
+
+```sh
+npm run typecheck
+npm run lint
+npm run build
+
+cd apps/backend
+go build ./... && go vet ./... && go test ./...
+```
+
+Plus a real smoke test of whatever you changed. All gates green or no push.
+
+## Commits and PRs
+
+- Conventional-ish subjects: `feat:`, `fix:`, `docs:`, `refactor:` — keep them
+  short and describe the why.
+- Small, reviewable PRs. Fill in the template; a screenshot of UI changes is
+  worth more than a paragraph.
+
+## Reporting bugs / requesting features
+
+Use the issue templates. For security issues, see
+[SECURITY.md](SECURITY.md) — do not open a public issue.

README.md

@@ -3,21 +3,69 @@
 A self-hosted homelab dashboard. CasaOS-grade ease of use, Vercel-grade design.
 Single container, UI-managed, no YAML, no auth.
 
-**Status:** pre-release. See [ROADMAP.md](ROADMAP.md).
+![Dash board](docs/screenshots/board.png)
+
+## Features
+
+- **Service board** — sections, drag-and-drop, multi-URL services, icon upload,
+  four board renderers (Bento, Cards, Index, Console), dark/light themes
+- **Uptime monitors** — HTTP, TCP, ping, DNS, keyword, JSON-path, and push
+  checks on a schedule, with heartbeat history and uptime stats
+- **Domain watch** — WHOIS/RDAP, DNS records, TLS certificate expiry,
+  registrar and provider detection
+- **System monitoring** — lightweight `dash-agent` pushes CPU, memory, disk,
+  network, load, temperatures, and Docker container state
+- **Incidents & status pages** — manual and automatic incidents, maintenance
+  windows, public `/status/:slug` pages, SVG badges
+- **Alerts** — generic webhook notifications (Slack, Discord, ntfy compatible)
+- **Observability** — Prometheus `/api/metrics`, JSON export, CSV bulk import,
+  importers for Homepage, Homarr, and Dashy configs
 
 ## Run
 
 ```sh
-docker run -v ./data:/data -p 3000:3000 dash
+docker run -d -v ./data:/data -p 3000:3000 ghcr.io/dvorinka/dash:latest
 ```
 
-or
+or with compose:
+
+```yaml
+services:
+  dash:
+    image: ghcr.io/dvorinka/dash:latest
+    ports:
+      - "3000:3000"
+    volumes:
+      - ./data:/data
+    restart: unless-stopped
+```
+
+Then open http://localhost:3000. Everything is configured from the UI.
+
+## System agent
+
+Monitor a Linux host: create a system in the UI, copy the token, then:
 
 ```sh
-docker compose up
+dash-agent -url http://dash:3000 -token <token>
 ```
 
-Then open http://localhost:3000.
+One static binary, no dependencies. See
+[docs/installation.md](docs/installation.md) for systemd and Docker setups.
+
+## Screenshots
+
+| | |
+|---|---|
+| ![Monitors](docs/screenshots/monitors.png) | ![Domains](docs/screenshots/domains.png) |
+| ![Systems](docs/screenshots/systems.png) | ![Status page](docs/screenshots/status-page.png) |
+
+## Docs
+
+- [Installation](docs/installation.md)
+- [Configuration](docs/configuration.md)
+- [Widget development](docs/widgets.md)
+- [Roadmap](ROADMAP.md) · [Changelog](CHANGELOG.md) · [Contributing](CONTRIBUTING.md)
 
 ## Develop
 

ROADMAP.md

@@ -34,6 +34,10 @@ or popover logic.
 | `v0.1.0` | Phase 0 + 1 — working MVP, single image | manual smoke test ✅ |
 | `v0.2.0` | Phase 2 — widget layer + first integrations | Pi-hole widget live ✅ |
 | `v0.3.0` | Phase 3 — four renderers, ⌘K palette, icon suggest | palette + switcher live ✅ |
+| `v0.4.0` | Phase M1 — uptime monitors + alerts backbone | monitor lifecycle live |
+| `v0.5.0` | Phase M2 — domain intelligence | domain lookup + expiry alerts |
+| `v0.6.0` | Phase M3 — system monitoring + agent | agent ingest + charts |
+| `v0.7.0` | Phase M4 — incidents, status pages, badges, metrics | public status page live |
 | `v1.0.0` | Phase 4 — OSS polish, docs, importers, CI releases | public repo launch |
 | `v1.x` | Phase 5 — demand-driven extras only | per-feature |
 
@@ -113,14 +117,87 @@ The product's spine: sections, services, drag-drop, multi-URL.
 
 **Exit:** all four renderers work off the same board state; palette navigates everything. — verified: both new renderers render/persist/dnd/collapse, palette filters and executes, icon suggest resolves real CDN assets, 360px + light theme, docker image 43.9 MB.
 
+## Merge program — Beszel fork → Dash
+
+Source: the local Beszel fork (`~/Desktop/PROG+HTML/Beszel` — PocketBase hub
+with custom monitors/domains/status-pages) plus lissy93/domain-locker as
+design inspiration. Upstream references cloned to `../_ref/beszel` and
+`../_ref/domain-locker` for consultation only.
+
+**No code moves verbatim.** The fork is PocketBase collections + its own
+auth + a WebSocket agent; Dash is Gin + SQLite + goose with no auth. We port
+data models, check logic, and lookup pipelines — DB, API, and UI layers are
+re-implemented on Dash conventions.
+
+**Deployment reality.** Monitoring needs a persistent process (schedulers),
+non-HTTP egress (WHOIS :43, ICMP, SMTP, raw TCP), and a writable DB. None of
+that exists on serverless — Vercel cannot host this product, full stop. The
+deploy story stays `docker run` + GHCR image + goreleaser binaries; agents
+are a second small binary.
+
+**UI model.** The app becomes routed: `/` board (default), `/monitors`,
+`/domains`, `/systems`, `/status/:slug` (public, no board chrome). Router:
+`wouter` (~2 kB — every route we need, nothing more). Charts: `recharts`.
+Board widgets surface monitoring entities through the existing widget
+registry — monitor uptime, domain expiry, system gauges — so the board
+becomes the summary layer over the monitoring pages.
+
+### Phase M1 — Monitors → v0.4.0
+
+Uptime checking: the backbone everything else hangs off.
+
+- [ ] Schema: `monitors` (name, type, url/hostname/port, method, keyword, json_query, expected_value, interval_s, timeout_s, retries, active, status, tags, notes), `heartbeats` (monitor_id, status, ping_ms, msg, cert_expiry, checked_at — 30-day retention prune)
+- [ ] In-process scheduler: due-monitor sweep, bounded worker pool, heartbeat write, status transitions
+- [ ] Checkers: `http`/`https`, `tcp`, `ping` (unprivileged ICMP datagram via `x/net/icmp` — distroless has no ping binary), `dns`, `keyword`, `json-query`, `push` (caller-generated ingest URL)
+- [ ] API: `/api/monitors` CRUD, `/:id/heartbeats?range=`, pause/resume, check-now
+- [ ] Monitors page (status, uptime 24h/30d, ping, interval) + detail (response chart, heartbeat log)
+- [ ] Board widget type `monitor` bound to a monitor id
+- [ ] ServiceDialog checkbox: create matching http monitor from a service URL
+- [ ] The fork's ~30 exotic monitor types were TCP stubs — not ported. Real types only.
+
+### Phase M2 — Domains → v0.5.0
+
+Domain-locker-grade domain intelligence.
+
+- [ ] Schema: `domains` (core columns + `extra` JSON for the long tail), `domain_history` (domain_id, change_type, field, old, new, at)
+- [ ] Lookup pipeline ported from fork `hub/domains/whois/lookup.go`, trimmed: RDAP over HTTPS → native WHOIS TCP:43 + parser; SSL chain via `crypto/tls`; DNS (NS/MX/TXT/A/AAAA) via `net.Resolver`; host geo via ip-api; provider detection via fork `detect/providers.go`; favicon
+- [ ] Daily scheduler + manual refresh; field diffs recorded to `domain_history`
+- [ ] Alerts: `alert_rules` + `notifications` tables; dispatchers — generic webhook (JSON POST), SMTP via `net/smtp`, Discord/Slack presets. Triggers: domain expiry ≤ N days, SSL expiry ≤ N days, monitor down/recovered (M1), system offline (M3)
+- [ ] Domains page + detail (expiry countdown, registrar, SSL, DNS, subdomains)
+- [ ] Board widget `domain` (expiry countdown)
+- [ ] Subdomain discovery: port `subdomain_discovery.go`, opt-in per domain
+- [ ] Not ported (v1): whoisxml API, EURid web scraping, SEO/robots parsing, valuation estimates — demand only
+
+### Phase M3 — Systems → v0.6.0
+
+Beszel-style server monitoring, push-based.
+
+- [x] Schema: `systems` (name, token, host, os/arch, last_seen, status, `latest` JSON snapshot), `system_stats` (system_id, ts, payload JSON — one column, no sub-field queries; 7d retention prune)
+- [x] Ingest: `POST /api/systems/ingest` with per-system bearer token; offline when silent > max(3×interval, 30s); `system.up`/`system.down` webhook events
+- [x] `cmd/dash-agent`: Linux collector — `/proc` (cpu/mem/net/load/uptime), `/sys` hwmon temps, statfs disk, docker.sock container list; POST every `-interval` (default 10s); `-once` debug mode
+- [x] Agent packaging: systemd unit (`packaging/dash-agent.service`) + `infra/Dockerfile.agent` + goreleaser binaries (Phase 4)
+- [x] Systems page (status cards, cpu/mem/disk bars, uptime) + detail (recharts: cpu%, mem%, net rx/tx, load; temps + containers tables)
+- [x] Board widget `system` (cpu/mem/disk mini bars)
+- [x] Not ported: the beszel agent protocol (SSH/WS into PocketBase) — our agent is push-JSON. SMART/ZFS/GPU metrics + per-container cpu/mem deferred to demand.
+
+### Phase M4 — Ops layer → v0.7.0
+
+- [x] Incidents: `incidents` + `incident_updates`; manual CRUD + auto-open on monitor down, auto-resolve on recovery; severity + status flow (open → ack → resolved → closed)
+- [x] Maintenance windows: `maintenance_windows` (monitor_ids empty = all); suppress alerts + auto-incidents, status pages show `maintenance` state while active
+- [x] Status pages: `status_pages` (monitor_ids/system_ids JSON columns — a join table for ≤ dozens of ids is ceremony); admin `/status`, public `/status/:slug` + `GET /api/status-pages/:slug/public`
+- [x] Badges: `GET /api/badge/:kind/:id.svg` — stateless SVG from live data (monitor status+uptime, domain days-left, system status)
+- [x] `GET /api/metrics` Prometheus exposition
+- [x] Bulk: `POST /api/import/csv?kind=monitors|domains` header-driven CSV; monitors/domains/systems rows folded into `/api/export` (v2, additive)
+- [x] ⌘K palette + header nav wired for new pages
+
 ## Phase 4 — Open-source launch → v1.0.0
 
-- [ ] Docs: install, configuration, widget development guide (`docs/`)
-- [ ] Importers: Homepage `services.yml`, Homarr JSON, Dashy `conf.yml` → sections/items/urls
-- [ ] `README.md` hero: screenshots (4 themes), demo GIF, `docker run` one-liner
-- [ ] goreleaser → binaries; GHCR image on tag; semver + `CHANGELOG.md`
-- [ ] `CONTRIBUTING.md`, issue/PR templates, code of conduct, security policy
-- [ ] i18n scaffolding (en default)
+- [x] Docs: install, configuration, widget development guide (`docs/`)
+- [x] Importers: Homepage `services.yml`, Homarr JSON, Dashy `conf.yml` → sections/items/urls
+- [x] `README.md` hero: screenshots, `docker run` one-liner (demo GIF deferred — pngs suffice for v1.0.0)
+- [x] goreleaser → binaries; GHCR image on tag; semver + `CHANGELOG.md`
+- [x] `CONTRIBUTING.md`, issue/PR templates, code of conduct, security policy
+- [x] i18n scaffolding (`src/i18n/` — typed `t()` + `en` dict; full string extraction deferred to first real locale)
 - [ ] Public repo flip + announcement assets
 
 **Exit:** a stranger can `docker run`, import their Homepage config, and have a working board in under two minutes.

SECURITY.md

@@ -0,0 +1,34 @@
+# Security Policy
+
+## Supported versions
+
+| Version | Supported |
+|---|---|
+| latest release | yes |
+| older releases | no |
+
+Dash is pre-1.0; only the latest release receives fixes.
+
+## Reporting a vulnerability
+
+Use GitHub's private vulnerability reporting:
+**Security → Advisories → Report a vulnerability** on this repository.
+
+Do not open a public issue for security problems.
+
+Please include:
+
+- affected version/commit
+- steps to reproduce or a proof of concept
+- impact assessment
+
+You will get an acknowledgement within a few days. If the report is accepted,
+a fix ships in the next release and you are credited in the advisory (unless
+you prefer otherwise).
+
+## Scope notes
+
+Dash is designed for trusted private networks — it ships **without
+authentication** by design. Exposure to the public internet is a deployment
+choice outside the project's control, but issues that remain exploitable on a
+LAN (SSRF in checkers, injection, token leakage, unsafe schemes) are in scope.

apps/backend/cmd/dash-agent/main.go

@@ -0,0 +1,362 @@
+// Command dash-agent collects host metrics and pushes them to a Dash server.
+// Linux-first: /proc for cpu/mem/net/load/uptime, /sys hwmon for temps,
+// statfs for disk, and the Docker socket for container liveness when present.
+//
+//	env DASH_URL=http://dash:8080 DASH_TOKEN=agent_xxx dash-agent
+//
+// Flags override env: -url, -token, -interval (seconds), -once.
+package main
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"flag"
+	"fmt"
+	"io"
+	"log"
+	"net"
+	"net/http"
+	"os"
+	"runtime"
+	"strconv"
+	"strings"
+	"syscall"
+	"time"
+)
+
+// version is stamped by goreleaser via -X main.version.
+var version = "dev"
+
+func main() {
+	url := flag.String("url", os.Getenv("DASH_URL"), "dash server base URL")
+	token := flag.String("token", os.Getenv("DASH_TOKEN"), "system token")
+	interval := flag.Int("interval", envInt("DASH_INTERVAL", 10), "push interval seconds")
+	once := flag.Bool("once", false, "collect and print one sample, no push")
+	flag.Parse()
+
+	c := &collector{}
+	c.host, _ = os.Hostname()
+	c.os = runtime.GOOS
+	c.arch = runtime.GOARCH
+	c.cpuModel, c.cores = cpuInfo()
+	c.prevCPU = readCPUTicks()
+	c.prevNet = readNetBytes()
+	c.prevAt = time.Now()
+
+	if *once {
+		// Rates need a delta window — idle briefly so cpu/net are real.
+		time.Sleep(500 * time.Millisecond)
+		s := c.sample(*interval)
+		out, _ := json.MarshalIndent(s, "", "  ")
+		fmt.Println(string(out))
+		return
+	}
+	if *url == "" || *token == "" {
+		log.Fatal("dash-agent: -url and -token (or DASH_URL/DASH_TOKEN) required")
+	}
+	log.Printf("dash-agent %s: pushing to %s every %ds", version, *url, *interval)
+	for {
+		s := c.sample(*interval)
+		if err := push(*url, *token, s); err != nil {
+			log.Printf("dash-agent: push: %v", err)
+		}
+		time.Sleep(time.Duration(*interval) * time.Second)
+	}
+}
+
+func envInt(k string, def int) int {
+	if v, err := strconv.Atoi(os.Getenv(k)); err == nil && v > 0 {
+		return v
+	}
+	return def
+}
+
+// sample mirrors api.StatSample — duplicated here so the agent stays a
+// standalone binary with zero imports from the server module.
+type sample struct {
+	Host       string             `json:"host"`
+	OS         string             `json:"os"`
+	Arch       string             `json:"arch"`
+	CPUModel   string             `json:"cpuModel"`
+	Cores      int                `json:"cores"`
+	IntervalS  int                `json:"intervalS"`
+	UptimeS    float64            `json:"uptimeS"`
+	CPU        float64            `json:"cpu"`
+	MemTotal   float64            `json:"memTotal"`
+	MemUsed    float64            `json:"memUsed"`
+	SwapTotal  float64            `json:"swapTotal"`
+	SwapUsed   float64            `json:"swapUsed"`
+	DiskTotal  float64            `json:"diskTotal"`
+	DiskUsed   float64            `json:"diskUsed"`
+	NetRx      float64            `json:"netRx"`
+	NetTx      float64            `json:"netTx"`
+	Load1      float64            `json:"load1"`
+	Load5      float64            `json:"load5"`
+	Load15     float64            `json:"load15"`
+	Temps      map[string]float64 `json:"temps,omitempty"`
+	Containers []containerStat    `json:"containers,omitempty"`
+}
+
+type containerStat struct {
+	Name  string `json:"name"`
+	State string `json:"state"`
+}
+
+type collector struct {
+	host, os, arch, cpuModel string
+	cores                    int
+	prevCPU                  cpuTicks
+	prevNet                  [2]uint64 // rx, tx bytes
+	prevAt                   time.Time
+}
+
+type cpuTicks struct{ idle, total uint64 }
+
+func (c *collector) sample(interval int) sample {
+	s := sample{
+		Host: c.host, OS: c.os, Arch: c.arch,
+		CPUModel: c.cpuModel, Cores: c.cores, IntervalS: interval,
+	}
+	now := time.Now()
+	dt := now.Sub(c.prevAt).Seconds()
+	if dt <= 0 {
+		dt = float64(interval)
+	}
+
+	if cur := readCPUTicks(); cur.total > c.prevCPU.total {
+		busy := float64(cur.total-cur.idle) - float64(c.prevCPU.total-c.prevCPU.idle)
+		s.CPU = busy / float64(cur.total-c.prevCPU.total) * 100
+		c.prevCPU = cur
+	}
+	s.MemTotal, s.MemUsed, s.SwapTotal, s.SwapUsed = readMem()
+	s.DiskTotal, s.DiskUsed = diskUsage("/")
+	if cur := readNetBytes(); cur[0] >= c.prevNet[0] {
+		s.NetRx = float64(cur[0]-c.prevNet[0]) / dt
+		s.NetTx = float64(cur[1]-c.prevNet[1]) / dt
+		c.prevNet = cur
+	}
+	c.prevAt = now
+	s.Load1, s.Load5, s.Load15 = readLoad()
+	s.UptimeS = readUptime()
+	s.Temps = readTemps()
+	s.Containers = readContainers()
+	return s
+}
+
+func push(url, token string, s sample) error {
+	body, _ := json.Marshal(s)
+	req, _ := http.NewRequest(http.MethodPost,
+		strings.TrimRight(url, "/")+"/api/systems/ingest", bytes.NewReader(body))
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Authorization", "Bearer "+token)
+	res, err := (&http.Client{Timeout: 10 * time.Second}).Do(req)
+	if err != nil {
+		return err
+	}
+	defer res.Body.Close()
+	io.Copy(io.Discard, res.Body)
+	if res.StatusCode >= 300 {
+		return fmt.Errorf("server returned %d", res.StatusCode)
+	}
+	return nil
+}
+
+// ---------- /proc + /sys readers (Linux; all no-op-safe elsewhere) ----------
+
+// readCPUTicks parses the aggregate cpu line: fields are user nice system
+// idle iowait irq softirq steal — everything but idle+iowait counts busy.
+func readCPUTicks() cpuTicks {
+	b, err := os.ReadFile("/proc/stat")
+	if err != nil {
+		return cpuTicks{}
+	}
+	var t cpuTicks
+	for _, line := range strings.Split(string(b), "\n") {
+		if !strings.HasPrefix(line, "cpu ") {
+			continue
+		}
+		f := strings.Fields(line)[1:]
+		var vals []uint64
+		for _, v := range f {
+			n, _ := strconv.ParseUint(v, 10, 64)
+			vals = append(vals, n)
+			t.total += n
+		}
+		if len(vals) >= 5 {
+			t.idle = vals[3] + vals[4]
+		}
+		break
+	}
+	return t
+}
+
+func cpuInfo() (model string, cores int) {
+	b, err := os.ReadFile("/proc/cpuinfo")
+	if err != nil {
+		return "", runtime.NumCPU()
+	}
+	for _, line := range strings.Split(string(b), "\n") {
+		if strings.HasPrefix(line, "processor") {
+			cores++
+		}
+		if model == "" && strings.HasPrefix(line, "model name") {
+			model = strings.TrimSpace(strings.SplitN(line, ":", 2)[1])
+		}
+	}
+	if cores == 0 {
+		cores = runtime.NumCPU()
+	}
+	return model, cores
+}
+
+// readMem returns total/used bytes for RAM and swap from /proc/meminfo.
+func readMem() (memTotal, memUsed, swapTotal, swapUsed float64) {
+	b, err := os.ReadFile("/proc/meminfo")
+	if err != nil {
+		return
+	}
+	kb := map[string]float64{}
+	for _, line := range strings.Split(string(b), "\n") {
+		f := strings.Fields(line)
+		if len(f) >= 2 {
+			kb[strings.TrimSuffix(f[0], ":")], _ = strconv.ParseFloat(f[1], 64)
+		}
+	}
+	memTotal = kb["MemTotal"] * 1024
+	memUsed = (kb["MemTotal"] - kb["MemAvailable"]) * 1024
+	swapTotal = kb["SwapTotal"] * 1024
+	swapUsed = (kb["SwapTotal"] - kb["SwapFree"]) * 1024
+	return
+}
+
+func diskUsage(path string) (total, used float64) {
+	var st syscall.Statfs_t
+	if err := syscall.Statfs(path, &st); err != nil {
+		return 0, 0
+	}
+	total = float64(st.Blocks) * float64(st.Bsize)
+	used = float64(st.Blocks-st.Bfree) * float64(st.Bsize)
+	return total, used
+}
+
+// readNetBytes sums rx/tx across interfaces, skipping loopback.
+func readNetBytes() [2]uint64 {
+	b, err := os.ReadFile("/proc/net/dev")
+	if err != nil {
+		return [2]uint64{}
+	}
+	var rx, tx uint64
+	for _, line := range strings.Split(string(b), "\n") {
+		i := strings.Index(line, ":")
+		if i < 0 || strings.Contains(line[:i], "lo") {
+			continue
+		}
+		f := strings.Fields(line[i+1:])
+		if len(f) >= 9 {
+			r, _ := strconv.ParseUint(f[0], 10, 64)
+			t, _ := strconv.ParseUint(f[8], 10, 64)
+			rx += r
+			tx += t
+		}
+	}
+	return [2]uint64{rx, tx}
+}
+
+func readLoad() (l1, l5, l15 float64) {
+	b, err := os.ReadFile("/proc/loadavg")
+	if err != nil {
+		return
+	}
+	f := strings.Fields(string(b))
+	if len(f) >= 3 {
+		l1, _ = strconv.ParseFloat(f[0], 64)
+		l5, _ = strconv.ParseFloat(f[1], 64)
+		l15, _ = strconv.ParseFloat(f[2], 64)
+	}
+	return
+}
+
+func readUptime() float64 {
+	b, err := os.ReadFile("/proc/uptime")
+	if err != nil {
+		return 0
+	}
+	f := strings.Fields(string(b))
+	if len(f) > 0 {
+		v, _ := strconv.ParseFloat(f[0], 64)
+		return v
+	}
+	return 0
+}
+
+// readTemps walks /sys/class/hwmon for temp*_input sensors.
+func readTemps() map[string]float64 {
+	out := map[string]float64{}
+	hwmons, _ := os.ReadDir("/sys/class/hwmon")
+	for _, hw := range hwmons {
+		dir := "/sys/class/hwmon/" + hw.Name()
+		chip, _ := os.ReadFile(dir + "/name")
+		entries, _ := os.ReadDir(dir)
+		for _, e := range entries {
+			name := e.Name()
+			if !strings.HasPrefix(name, "temp") || !strings.HasSuffix(name, "_input") {
+				continue
+			}
+			b, err := os.ReadFile(dir + "/" + name)
+			if err != nil {
+				continue
+			}
+			millideg, err := strconv.ParseFloat(strings.TrimSpace(string(b)), 64)
+			if err != nil || millideg <= 0 || millideg > 150000 {
+				continue
+			}
+			label := strings.TrimSpace(string(chip))
+			if lb, err := os.ReadFile(dir + "/" + strings.TrimSuffix(name, "_input") + "_label"); err == nil {
+				if l := strings.TrimSpace(string(lb)); l != "" {
+					label = l
+				}
+			}
+			if _, dup := out[label]; !dup {
+				out[label] = millideg / 1000
+			}
+		}
+	}
+	return out
+}
+
+// readContainers lists Docker containers via the unix socket when present.
+func readContainers() []containerStat {
+	if _, err := os.Stat("/var/run/docker.sock"); err != nil {
+		return nil
+	}
+	client := &http.Client{
+		Timeout: 3 * time.Second,
+		Transport: &http.Transport{
+			DialContext: func(ctx context.Context, _, _ string) (net.Conn, error) {
+				return (&net.Dialer{}).DialContext(ctx, "unix", "/var/run/docker.sock")
+			},
+		},
+	}
+	res, err := client.Get("http://d/containers/json?all=1")
+	if err != nil {
+		return nil
+	}
+	defer res.Body.Close()
+	var raw []struct {
+		Names []string `json:"Names"`
+		State string   `json:"State"`
+	}
+	if json.NewDecoder(res.Body).Decode(&raw) != nil {
+		return nil
+	}
+	out := make([]containerStat, 0, len(raw))
+	for _, r := range raw {
+		name := ""
+		if len(r.Names) > 0 {
+			name = strings.TrimPrefix(r.Names[0], "/")
+		}
+		out = append(out, containerStat{Name: name, State: r.State})
+	}
+	return out
+}

apps/backend/cmd/dash/main.go

@@ -19,6 +19,9 @@ import (
 	"github.com/tdvorak/dash/internal/web"
 )
 
+// version is stamped by goreleaser via -X main.version.
+var version = "dev"
+
 func main() {
 	dev := os.Getenv("DASH_DEV") == "1"
 
@@ -42,8 +45,11 @@ func main() {
 	}
 	defer func() { _ = sqlDB.Close() }()
 
+	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
+	defer stop()
+
 	iconsDir := filepath.Join(dataDir, "icons")
-	router := api.NewRouter(logger, sqlDB, iconsDir)
+	router := api.NewRouter(ctx, logger, sqlDB, iconsDir)
 	if err := web.Register(router); err != nil {
 		logger.Fatal("register embedded UI", zap.Error(err))
 	}
@@ -51,11 +57,8 @@ func main() {
 	addr := ":" + envOr("DASH_PORT", "8080")
 	srv := &http.Server{Addr: addr, Handler: router, ReadHeaderTimeout: 10 * time.Second}
 
-	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
-	defer stop()
-
 	go func() {
-		logger.Info("listening", zap.String("addr", addr), zap.String("data", dataDir))
+		logger.Info("listening", zap.String("addr", addr), zap.String("data", dataDir), zap.String("version", version))
 		if err := srv.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
 			logger.Fatal("serve", zap.Error(err))
 		}

apps/backend/go.mod

@@ -4,8 +4,10 @@ go 1.27
 
 require (
 	github.com/gin-gonic/gin v1.12.0
+	github.com/goccy/go-yaml v1.19.2
 	github.com/pressly/goose/v3 v3.28.0
 	go.uber.org/zap v1.28.0
+	golang.org/x/net v0.58.0
 	modernc.org/sqlite v1.59.0
 )
 
@@ -21,7 +23,6 @@ require (
 	github.com/go-playground/universal-translator v0.18.1 // indirect
 	github.com/go-playground/validator/v10 v10.30.1 // indirect
 	github.com/goccy/go-json v0.10.5 // indirect
-	github.com/goccy/go-yaml v1.19.2 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
@@ -42,7 +43,6 @@ require (
 	go.uber.org/multierr v1.11.0 // indirect
 	golang.org/x/arch v0.22.0 // indirect
 	golang.org/x/crypto v0.55.0 // indirect
-	golang.org/x/net v0.58.0 // indirect
 	golang.org/x/sync v0.22.0 // indirect
 	golang.org/x/sys v0.47.0 // indirect
 	golang.org/x/text v0.41.0 // indirect

apps/backend/internal/api/api.go

@@ -2,6 +2,7 @@
 package api
 
 import (
+	"context"
 	"crypto/rand"
 	"database/sql"
 	"encoding/hex"
@@ -12,28 +13,51 @@ import (
 	"time"
 
 	"github.com/gin-gonic/gin"
+	"github.com/tdvorak/dash/internal/domain"
+	"github.com/tdvorak/dash/internal/widget"
 	"go.uber.org/zap"
 )
 
-// Server holds handler dependencies: DB, icon dir, status + widget caches.
+// Server holds handler dependencies: DB, icon dir, logger, caches.
 type Server struct {
 	db       *sql.DB
 	iconsDir string
+	log      *zap.Logger
 	status   *statusCache
 	widgets  *widgetCache
+	// lookup performs domain refreshes; swappable so tests don't hit the
+	// real WHOIS/RDAP/DNS path.
+	lookup func(ctx context.Context, name string) *domain.Result
 }
 
-// NewRouter builds the HTTP handler: zap access log, recovery, /api routes.
-func NewRouter(logger *zap.Logger, db *sql.DB, iconsDir string) *gin.Engine {
+func newServer(logger *zap.Logger, db *sql.DB, iconsDir string) *Server {
 	s := &Server{
 		db:       db,
 		iconsDir: iconsDir,
+		log:      logger,
 		status:   newStatusCache(60 * time.Second),
 		widgets:  newWidgetCache(30 * time.Second),
 	}
+	s.lookup = domain.NewLookup().Run
+	widget.Register(&monitorWidget{db: db})
+	widget.Register(&domainWidget{db: db})
+	widget.Register(&systemWidget{db: db})
+	return s
+}
 
+// NewRouter builds the HTTP handler: zap access log, recovery, /api routes.
+// A non-nil ctx starts the monitor scheduler; nil keeps it off (tests).
+func NewRouter(ctx context.Context, logger *zap.Logger, db *sql.DB, iconsDir string) *gin.Engine {
+	s := newServer(logger, db, iconsDir)
+	if ctx != nil {
+		go s.runScheduler(ctx.Done())
+	}
+	return s.routes()
+}
+
+func (s *Server) routes() *gin.Engine {
 	r := gin.New()
-	r.Use(accessLog(logger), gin.Recovery())
+	r.Use(accessLog(s.log), gin.Recovery())
 
 	v1 := r.Group("/api")
 	v1.GET("/healthz", s.healthz)
@@ -51,6 +75,52 @@ func NewRouter(logger *zap.Logger, db *sql.DB, iconsDir string) *gin.Engine {
 	v1.POST("/items/:id/icon", s.uploadIcon)
 	v1.GET("/icons/:file", s.getIcon)
 
+	v1.GET("/monitors", s.listMonitorsH)
+	v1.POST("/monitors", s.createMonitor)
+	v1.GET("/monitors/:id", s.getMonitor)
+	v1.PATCH("/monitors/:id", s.patchMonitor)
+	v1.DELETE("/monitors/:id", s.deleteMonitor)
+	v1.GET("/monitors/:id/heartbeats", s.monitorHeartbeats)
+	v1.POST("/monitors/:id/check", s.checkNow)
+	v1.Any("/push/:token", s.pushIngest)
+
+	v1.GET("/domains", s.listDomainsH)
+	v1.POST("/domains", s.createDomain)
+	v1.GET("/domains/:id", s.getDomain)
+	v1.PATCH("/domains/:id", s.patchDomain)
+	v1.DELETE("/domains/:id", s.deleteDomain)
+	v1.POST("/domains/:id/refresh", s.refreshDomainH)
+	v1.GET("/domains/:id/checks", s.domainChecks)
+	v1.POST("/notify/test", s.notifyTest)
+
+	v1.GET("/systems", s.listSystemsH)
+	v1.POST("/systems", s.createSystem)
+	v1.GET("/systems/:id", s.getSystem)
+	v1.PATCH("/systems/:id", s.patchSystem)
+	v1.DELETE("/systems/:id", s.deleteSystem)
+	v1.GET("/systems/:id/stats", s.systemStats)
+	v1.POST("/systems/ingest", s.ingestSystem)
+
+	v1.GET("/incidents", s.listIncidents)
+	v1.POST("/incidents", s.createIncident)
+	v1.PATCH("/incidents/:id", s.patchIncident)
+	v1.DELETE("/incidents/:id", s.deleteIncident)
+	v1.POST("/incidents/:id/updates", s.addIncidentUpdate)
+
+	v1.GET("/maintenance", s.listWindows)
+	v1.POST("/maintenance", s.createWindow)
+	v1.DELETE("/maintenance/:id", s.deleteWindow)
+
+	v1.GET("/status-pages", s.listStatusPages)
+	v1.POST("/status-pages", s.createStatusPage)
+	v1.PATCH("/status-pages/:id", s.patchStatusPage)
+	v1.DELETE("/status-pages/:id", s.deleteStatusPage)
+	v1.GET("/status-pages/:slug/public", s.publicStatus)
+
+	v1.GET("/badge/:kind/:file", s.badge)
+	v1.GET("/metrics", s.metrics)
+	v1.POST("/import/csv", s.importCSV)
+
 	v1.GET("/status", s.getStatus)
 	v1.GET("/widgets/types", s.widgetTypes)
 	v1.GET("/widgets/:id/data", s.widgetData)
@@ -58,6 +128,7 @@ func NewRouter(logger *zap.Logger, db *sql.DB, iconsDir string) *gin.Engine {
 	v1.PUT("/settings", s.putSettings)
 	v1.GET("/export", s.exportBoard)
 	v1.POST("/import", s.importBoard)
+	v1.POST("/import/external", s.importExternal)
 
 	return r
 }

apps/backend/internal/api/api_test.go

@@ -1,7 +1,9 @@
 package api
 
 import (
+	"context"
 	"encoding/json"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"path/filepath"
@@ -11,6 +13,7 @@ import (
 
 	"github.com/gin-gonic/gin"
 	"github.com/tdvorak/dash/internal/db"
+	"github.com/tdvorak/dash/internal/domain"
 	"go.uber.org/zap"
 )
 
@@ -22,7 +25,22 @@ func testServer(t *testing.T) *httptest.Server {
 	}
 	t.Cleanup(func() { d.Close() })
 	gin.SetMode(gin.TestMode)
-	return httptest.NewServer(NewRouter(zap.NewNop(), d, t.TempDir()))
+	s := newServer(zap.NewNop(), d, t.TempDir())
+	// Stub the domain lookup — real RDAP/WHOIS/DNS would make tests slow and
+	// network-dependent.
+	s.lookup = func(_ context.Context, name string) *domain.Result {
+		exp := time.Now().Add(90 * 24 * time.Hour).UTC()
+		return &domain.Result{
+			Name:          name,
+			RegistrarName: "Test Registrar",
+			ExpiryDate:    &exp,
+			IPv4:          []string{"93.184.216.34"},
+			NameServers:   []string{"ns1.example.com"},
+			Headers:       map[string]string{},
+			FaviconURL:    "https://www.google.com/s2/favicons?domain=" + name,
+		}
+	}
+	return httptest.NewServer(s.routes())
 }
 
 func do(t *testing.T, method, url, body string) (*http.Response, map[string]any) {
@@ -178,6 +196,568 @@ func TestWidgetEndpoints(t *testing.T) {
 	}
 }
 
+func TestImportExternalHomepage(t *testing.T) {
+	srv := testServer(t)
+	defer srv.Close()
+
+	body := `- Media:
+    - Plex:
+        href: http://plex.local:32400
+        icon: plex
+    - NoLink:
+        description: widget-only entry
+- Apps:
+    - Sonarr:
+        href: https://sonarr.example.com
+        icon: https://icons.example.com/sonarr.png
+`
+	res, _ := do(t, "POST", srv.URL+"/api/import/external", body)
+	if res.StatusCode != http.StatusOK {
+		t.Fatalf("homepage import: %d", res.StatusCode)
+	}
+	var secs []Section
+	resp, err := http.Get(srv.URL + "/api/sections")
+	if err != nil {
+		t.Fatalf("get sections: %v", err)
+	}
+	defer resp.Body.Close()
+	if err := json.NewDecoder(resp.Body).Decode(&secs); err != nil {
+		t.Fatalf("decode: %v", err)
+	}
+	if len(secs) != 2 {
+		t.Fatalf("expected 2 sections, got %+v", secs)
+	}
+	media := secs[0]
+	if media.Name != "Media" || len(media.Items) != 1 {
+		t.Fatalf("bad Media section: %+v", media)
+	}
+	if media.Items[0].Name != "Plex" || len(media.Items[0].URLs) != 1 {
+		t.Fatalf("bad Plex item: %+v", media.Items[0])
+	}
+	if media.Items[0].Icon == "" {
+		t.Fatal("expected resolved CDN icon")
+	}
+	apps := secs[1]
+	if apps.Items[0].Icon != "https://icons.example.com/sonarr.png" {
+		t.Fatalf("icon passthrough failed: %+v", apps.Items[0])
+	}
+}
+
+func TestImportExternalDashy(t *testing.T) {
+	srv := testServer(t)
+	defer srv.Close()
+
+	body := `appConfig:
+  title: test
+sections:
+  - name: Media
+    items:
+      - title: Plex
+        url: http://plex.local
+        icon: favicon
+      - title: Broken
+        url: "notaurl"
+`
+	res, _ := do(t, "POST", srv.URL+"/api/import/external", body)
+	if res.StatusCode != http.StatusOK {
+		t.Fatalf("dashy import: %d", res.StatusCode)
+	}
+	var secs []Section
+	resp, err := http.Get(srv.URL + "/api/sections")
+	if err != nil {
+		t.Fatalf("get sections: %v", err)
+	}
+	defer resp.Body.Close()
+	if err := json.NewDecoder(resp.Body).Decode(&secs); err != nil {
+		t.Fatalf("decode: %v", err)
+	}
+	if len(secs) != 1 || len(secs[0].Items) != 1 {
+		t.Fatalf("bad sections: %+v", secs)
+	}
+	if secs[0].Items[0].Icon != "http://plex.local/favicon.ico" {
+		t.Fatalf("favicon resolution failed: %+v", secs[0].Items[0])
+	}
+}
+
+func TestImportExternalHomarr(t *testing.T) {
+	srv := testServer(t)
+	defer srv.Close()
+
+	body := `{"apps":[{"name":"Plex","url":"http://plex.local","icon":"hl-plex","categoryId":"c1"},{"name":"Sonarr","url":"http://sonarr.local","categoryId":"c1"}],"categories":[{"id":"c1","name":"Media"}]}`
+	res, _ := do(t, "POST", srv.URL+"/api/import/external", body)
+	if res.StatusCode != http.StatusOK {
+		t.Fatalf("homarr import: %d", res.StatusCode)
+	}
+	var secs []Section
+	resp, err := http.Get(srv.URL + "/api/sections")
+	if err != nil {
+		t.Fatalf("get sections: %v", err)
+	}
+	defer resp.Body.Close()
+	if err := json.NewDecoder(resp.Body).Decode(&secs); err != nil {
+		t.Fatalf("decode: %v", err)
+	}
+	if len(secs) != 1 || secs[0].Name != "Media" || len(secs[0].Items) != 2 {
+		t.Fatalf("bad sections: %+v", secs)
+	}
+}
+
+func TestImportExternalRejectsGarbage(t *testing.T) {
+	srv := testServer(t)
+	defer srv.Close()
+	res, body := do(t, "POST", srv.URL+"/api/import/external", `{"foo": 1}`)
+	if res.StatusCode != http.StatusBadRequest {
+		t.Fatalf("expected 400, got %d: %v", res.StatusCode, body)
+	}
+}
+
+func TestMonitorLifecycle(t *testing.T) {
+	srv := testServer(t)
+	defer srv.Close()
+
+	// Target that returns 200.
+	up := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusOK)
+	}))
+	defer up.Close()
+
+	res, mv := do(t, "POST", srv.URL+"/api/monitors", `{"name":"Site","type":"http","url":"`+up.URL+`","intervalS":60}`)
+	if res.StatusCode != http.StatusCreated {
+		t.Fatalf("create: %d %v", res.StatusCode, mv)
+	}
+	id := mv["id"].(string)
+
+	// check-now -> up, heartbeat recorded.
+	res, mv = do(t, "POST", srv.URL+"/api/monitors/"+id+"/check", "")
+	if res.StatusCode != http.StatusOK || mv["status"] != "up" {
+		t.Fatalf("check-now: %d %v", res.StatusCode, mv)
+	}
+	resp, err := http.Get(srv.URL + "/api/monitors/" + id + "/heartbeats")
+	if err != nil {
+		t.Fatalf("heartbeats: %v", err)
+	}
+	var hbs []map[string]any
+	_ = json.NewDecoder(resp.Body).Decode(&hbs)
+	resp.Body.Close()
+	if len(hbs) != 1 || hbs[0]["status"] != "up" {
+		t.Fatalf("expected 1 up heartbeat, got %v", hbs)
+	}
+
+	// pause -> paused + inactive
+	res, mv = do(t, "PATCH", srv.URL+"/api/monitors/"+id, `{"active":false}`)
+	if res.StatusCode != http.StatusOK || mv["status"] != "paused" || mv["active"] != false {
+		t.Fatalf("pause: %v", mv)
+	}
+
+	// delete
+	res, _ = do(t, "DELETE", srv.URL+"/api/monitors/"+id, "")
+	if res.StatusCode != http.StatusNoContent {
+		t.Fatalf("delete: %d", res.StatusCode)
+	}
+	res, _ = do(t, "GET", srv.URL+"/api/monitors/"+id, "")
+	if res.StatusCode != http.StatusNotFound {
+		t.Fatalf("expected 404 after delete, got %d", res.StatusCode)
+	}
+}
+
+func TestMonitorCheckDown(t *testing.T) {
+	srv := testServer(t)
+	defer srv.Close()
+	res, mv := do(t, "POST", srv.URL+"/api/monitors", `{"name":"Dead","type":"http","url":"http://127.0.0.1:1","timeoutS":1}`)
+	if res.StatusCode != http.StatusCreated {
+		t.Fatalf("create: %v", mv)
+	}
+	id := mv["id"].(string)
+	res, mv = do(t, "POST", srv.URL+"/api/monitors/"+id+"/check", "")
+	if res.StatusCode != http.StatusOK || mv["status"] != "down" {
+		t.Fatalf("expected down, got %v", mv)
+	}
+}
+
+func TestPushMonitor(t *testing.T) {
+	srv := testServer(t)
+	defer srv.Close()
+	res, mv := do(t, "POST", srv.URL+"/api/monitors", `{"name":"Backup","type":"push","intervalS":60}`)
+	if res.StatusCode != http.StatusCreated {
+		t.Fatalf("create: %v", mv)
+	}
+	token, _ := mv["pushToken"].(string)
+	if token == "" {
+		t.Fatal("no push token issued")
+	}
+	res, _ = do(t, "GET", srv.URL+"/api/push/"+token+"?msg=done", "")
+	if res.StatusCode != http.StatusOK {
+		t.Fatalf("push: %d", res.StatusCode)
+	}
+	res, mv = do(t, "GET", srv.URL+"/api/monitors/"+mv["id"].(string), "")
+	if mv["status"] != "up" {
+		t.Fatalf("expected up after push, got %v", mv["status"])
+	}
+	res, _ = do(t, "GET", srv.URL+"/api/push/bogus", "")
+	if res.StatusCode != http.StatusNotFound {
+		t.Fatalf("bad token: %d", res.StatusCode)
+	}
+}
+
+func TestDomainLifecycle(t *testing.T) {
+	srv := testServer(t)
+	defer srv.Close()
+
+	// Garbage name -> 400 before any lookup happens.
+	res, body := do(t, "POST", srv.URL+"/api/domains", `{"name":"not a domain!!"}`)
+	if res.StatusCode != http.StatusBadRequest {
+		t.Fatalf("expected 400, got %d: %v", res.StatusCode, body)
+	}
+
+	// Valid name creates even when lookups fail (unresolvable TLD).
+	res, dv := do(t, "POST", srv.URL+"/api/domains", `{"name":"nonexistent.invalid","alertDaysBefore":14}`)
+	if res.StatusCode != http.StatusCreated {
+		t.Fatalf("create: %d %v", res.StatusCode, dv)
+	}
+	if dv["tld"] != "invalid" || dv["name"] != "nonexistent.invalid" {
+		t.Fatalf("bad domain row: %v", dv)
+	}
+	// Stubbed lookup populated registration data + computed countdown.
+	if dv["registrarName"] != "Test Registrar" || dv["daysUntilExpiry"] == nil {
+		t.Fatalf("lookup not applied: %v", dv)
+	}
+	id := dv["id"].(string)
+
+	// Duplicate name -> 409.
+	res, _ = do(t, "POST", srv.URL+"/api/domains", `{"name":"nonexistent.invalid"}`)
+	if res.StatusCode != http.StatusConflict {
+		t.Fatalf("expected 409, got %d", res.StatusCode)
+	}
+
+	// Patch alert threshold round-trips.
+	res, dv = do(t, "PATCH", srv.URL+"/api/domains/"+id, `{"alertDaysBefore":7,"autoRenew":true}`)
+	if res.StatusCode != http.StatusOK || dv["alertDaysBefore"] != float64(7) || dv["autoRenew"] != true {
+		t.Fatalf("patch: %v", dv)
+	}
+
+	// Refresh endpoint answers (lookup result content is network-dependent).
+	res, dv = do(t, "POST", srv.URL+"/api/domains/"+id+"/refresh", "")
+	if res.StatusCode != http.StatusOK {
+		t.Fatalf("refresh: %d %v", res.StatusCode, dv)
+	}
+
+	// Checks history endpoint responds with a list.
+	resp, err := http.Get(srv.URL + "/api/domains/" + id + "/checks")
+	if err != nil {
+		t.Fatalf("checks: %v", err)
+	}
+	var checks []map[string]any
+	_ = json.NewDecoder(resp.Body).Decode(&checks)
+	resp.Body.Close()
+
+	res, _ = do(t, "DELETE", srv.URL+"/api/domains/"+id, "")
+	if res.StatusCode != http.StatusNoContent {
+		t.Fatalf("delete: %d", res.StatusCode)
+	}
+	res, _ = do(t, "GET", srv.URL+"/api/domains/"+id, "")
+	if res.StatusCode != http.StatusNotFound {
+		t.Fatalf("expected 404 after delete, got %d", res.StatusCode)
+	}
+}
+
+func TestDomainWidget(t *testing.T) {
+	srv := testServer(t)
+	defer srv.Close()
+
+	res, dv := do(t, "POST", srv.URL+"/api/domains", `{"name":"widget.invalid"}`)
+	if res.StatusCode != http.StatusCreated {
+		t.Fatalf("create: %d %v", res.StatusCode, dv)
+	}
+	_, a := do(t, "POST", srv.URL+"/api/sections", `{"name":"A"}`)
+	_, w := do(t, "POST", srv.URL+"/api/items", `{"sectionId":"`+a["id"].(string)+`","kind":"widget","name":"D","config":{"type":"domain","domainId":"`+dv["id"].(string)+`"}}`)
+	res, data := do(t, "GET", srv.URL+"/api/widgets/"+w["id"].(string)+"/data", "")
+	inner, _ := data["data"].(map[string]any)
+	if res.StatusCode != http.StatusOK || inner["name"] != "widget.invalid" {
+		t.Fatalf("domain widget: %d %v", res.StatusCode, data)
+	}
+}
+
+func TestNotifyWebhook(t *testing.T) {
+	srv := testServer(t)
+	defer srv.Close()
+
+	// Receiver captures the webhook payload.
+	got := make(chan map[string]any, 1)
+	hook := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		var body map[string]any
+		_ = json.NewDecoder(r.Body).Decode(&body)
+		got <- body
+		w.WriteHeader(http.StatusOK)
+	}))
+	defer hook.Close()
+
+	// Unconfigured -> 400.
+	res, _ := do(t, "POST", srv.URL+"/api/notify/test", "")
+	if res.StatusCode != http.StatusBadRequest {
+		t.Fatalf("expected 400 without webhook, got %d", res.StatusCode)
+	}
+
+	// Configure + test.
+	if res, _ := do(t, "PUT", srv.URL+"/api/settings", `{"notify_webhook":"`+hook.URL+`"}`); res.StatusCode != http.StatusOK {
+		t.Fatalf("put settings: %d", res.StatusCode)
+	}
+	res, _ = do(t, "POST", srv.URL+"/api/notify/test", "")
+	if res.StatusCode != http.StatusOK {
+		t.Fatalf("notify test: %d", res.StatusCode)
+	}
+	select {
+	case body := <-got:
+		if body["event"] != "test" || body["text"] == "" {
+			t.Fatalf("bad payload: %v", body)
+		}
+	case <-time.After(3 * time.Second):
+		t.Fatal("webhook never received the test notification")
+	}
+
+	// Monitor transition fires monitor.down through the same webhook.
+	res, mv := do(t, "POST", srv.URL+"/api/monitors", `{"name":"Flip","type":"http","url":"http://127.0.0.1:1","timeoutS":1}`)
+	if res.StatusCode != http.StatusCreated {
+		t.Fatalf("create: %v", mv)
+	}
+	id := mv["id"].(string)
+	// pending -> down (no fire), then up -> down needs an up first.
+	up := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { w.WriteHeader(200) }))
+	defer up.Close()
+	res, _ = do(t, "PATCH", srv.URL+"/api/monitors/"+id, `{"url":"`+up.URL+`"}`)
+	if res.StatusCode != http.StatusOK {
+		t.Fatalf("patch: %d", res.StatusCode)
+	}
+	do(t, "POST", srv.URL+"/api/monitors/"+id+"/check", "") // -> up
+	do(t, "PATCH", srv.URL+"/api/monitors/"+id, `{"url":"http://127.0.0.1:1","timeoutS":1}`)
+	do(t, "POST", srv.URL+"/api/monitors/"+id+"/check", "") // -> down, fires webhook
+	select {
+	case body := <-got:
+		if body["event"] != "monitor.down" {
+			t.Fatalf("expected monitor.down, got %v", body)
+		}
+	case <-time.After(3 * time.Second):
+		t.Fatal("webhook never received monitor.down")
+	}
+}
+
+func TestSystemIngest(t *testing.T) {
+	srv := testServer(t)
+	defer srv.Close()
+
+	// No token -> 401.
+	res, _ := do(t, "POST", srv.URL+"/api/systems/ingest", `{"cpu":1}`)
+	if res.StatusCode != http.StatusUnauthorized {
+		t.Fatalf("expected 401, got %d", res.StatusCode)
+	}
+
+	res, sys := do(t, "POST", srv.URL+"/api/systems", `{"name":"nas"}`)
+	if res.StatusCode != http.StatusCreated {
+		t.Fatalf("create: %v", sys)
+	}
+	id, token := sys["id"].(string), sys["token"].(string)
+	if token == "" {
+		t.Fatal("no agent token issued")
+	}
+
+	// Bad token -> 401.
+	req, _ := http.NewRequest("POST", srv.URL+"/api/systems/ingest",
+		strings.NewReader(`{"cpu":50}`))
+	req.Header.Set("Authorization", "Bearer wrong")
+	if r, err := http.DefaultClient.Do(req); err != nil || r.StatusCode != http.StatusUnauthorized {
+		t.Fatalf("bad token: %v %v", r.StatusCode, err)
+	}
+
+	// Real push -> system goes up, latest + stats stored.
+	push := func() (*http.Response, map[string]any) {
+		t.Helper()
+		req, _ := http.NewRequest("POST", srv.URL+"/api/systems/ingest",
+			strings.NewReader(`{"host":"nas.local","os":"linux","arch":"amd64",
+				"cpuModel":"Test CPU","cores":4,"cpu":42.5,"memTotal":8000,"memUsed":4000,
+				"diskTotal":100000,"diskUsed":50000,"netRx":100,"netTx":50,"load1":1.5}`))
+		req.Header.Set("Content-Type", "application/json")
+		req.Header.Set("Authorization", "Bearer "+token)
+		res, err := http.DefaultClient.Do(req)
+		if err != nil {
+			t.Fatalf("push: %v", err)
+		}
+		defer res.Body.Close()
+		var out map[string]any
+		_ = json.NewDecoder(res.Body).Decode(&out)
+		return res, out
+	}
+	if res, out := push(); res.StatusCode != http.StatusOK {
+		t.Fatalf("ingest: %v", out)
+	}
+
+	res, sys = do(t, "GET", srv.URL+"/api/systems/"+id, "")
+	if res.StatusCode != http.StatusOK || sys["status"] != "up" {
+		t.Fatalf("get: %v", sys)
+	}
+	if sys["host"] != "nas.local" || sys["cores"].(float64) != 4 {
+		t.Fatalf("host fields not stored: %v", sys)
+	}
+	latest := sys["latest"].(map[string]any)
+	if latest["cpu"].(float64) != 42.5 {
+		t.Fatalf("latest not stored: %v", latest)
+	}
+
+	res, list := do(t, "GET", srv.URL+"/api/systems/"+id+"/stats?hours=1", "")
+	if res.StatusCode != http.StatusOK {
+		t.Fatalf("stats: %v", list)
+	}
+	// stats returns an array — decode separately.
+	req2, _ := http.NewRequest("GET", srv.URL+"/api/systems/"+id+"/stats?hours=1", nil)
+	r2, _ := http.DefaultClient.Do(req2)
+	var arr []map[string]any
+	_ = json.NewDecoder(r2.Body).Decode(&arr)
+	r2.Body.Close()
+	if len(arr) != 1 || arr[0]["cpu"].(float64) != 42.5 {
+		t.Fatalf("stats rows: %v", arr)
+	}
+
+	// Widget fetcher serves the latest sample.
+	_, a := do(t, "POST", srv.URL+"/api/sections", `{"name":"A"}`)
+	_, w := do(t, "POST", srv.URL+"/api/items", `{"sectionId":"`+a["id"].(string)+`","kind":"widget","name":"S","config":{"type":"system","systemId":"`+id+`"}}`)
+	res, data := do(t, "GET", srv.URL+"/api/widgets/"+w["id"].(string)+"/data", "")
+	inner, _ := data["data"].(map[string]any)
+	if res.StatusCode != http.StatusOK || inner["name"] != "nas" || inner["cpu"].(float64) != 42.5 {
+		t.Fatalf("system widget: %d %v", res.StatusCode, data)
+	}
+
+	// Rename + token rotation.
+	res, sys = do(t, "PATCH", srv.URL+"/api/systems/"+id, `{"name":"nas2","rotateToken":true}`)
+	if sys["name"] != "nas2" || sys["token"] == token {
+		t.Fatalf("patch: %v", sys)
+	}
+
+	res, _ = do(t, "DELETE", srv.URL+"/api/systems/"+id, "")
+	if res.StatusCode != http.StatusNoContent {
+		t.Fatalf("delete: %d", res.StatusCode)
+	}
+}
+
+func TestOpsLayer(t *testing.T) {
+	srv := testServer(t)
+	defer srv.Close()
+
+	// Monitor that flips up->down should auto-open an incident, and
+	// recovery should auto-resolve it.
+	up := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { w.WriteHeader(200) }))
+	defer up.Close()
+	_, mv := do(t, "POST", srv.URL+"/api/monitors",
+		`{"name":"Flip","type":"http","url":"`+up.URL+`","timeoutS":1}`)
+	id := mv["id"].(string)
+	do(t, "POST", srv.URL+"/api/monitors/"+id+"/check", "") // up
+	do(t, "PATCH", srv.URL+"/api/monitors/"+id, `{"url":"http://127.0.0.1:1"}`)
+	do(t, "POST", srv.URL+"/api/monitors/"+id+"/check", "") // down -> incident
+
+	res, _ := do(t, "GET", srv.URL+"/api/incidents?status=open", "")
+	if res.StatusCode != http.StatusOK {
+		t.Fatalf("incidents: %d", res.StatusCode)
+	}
+	req, _ := http.NewRequest("GET", srv.URL+"/api/incidents?status=open", nil)
+	r, _ := http.DefaultClient.Do(req)
+	var incs []map[string]any
+	_ = json.NewDecoder(r.Body).Decode(&incs)
+	r.Body.Close()
+	if len(incs) != 1 || incs[0]["monitorId"] != id {
+		t.Fatalf("auto incident: %v", incs)
+	}
+	incID := incs[0]["id"].(string)
+
+	do(t, "PATCH", srv.URL+"/api/monitors/"+id, `{"url":"`+up.URL+`"}`)
+	do(t, "POST", srv.URL+"/api/monitors/"+id+"/check", "") // up -> resolved
+	res, inc := do(t, "GET", srv.URL+"/api/incidents?status=open", "")
+	req, _ = http.NewRequest("GET", srv.URL+"/api/incidents?status=open", nil)
+	r, _ = http.DefaultClient.Do(req)
+	incs = nil
+	_ = json.NewDecoder(r.Body).Decode(&incs)
+	r.Body.Close()
+	if len(incs) != 0 {
+		t.Fatalf("incident should auto-resolve, got %v", incs)
+	}
+
+	// Manual incident lifecycle: create -> update -> resolve.
+	res, inc = do(t, "POST", srv.URL+"/api/incidents",
+		`{"title":"disk full","severity":"critical","message":"nas raid degraded"}`)
+	if res.StatusCode != http.StatusCreated || inc["status"] != "open" {
+		t.Fatalf("create incident: %v", inc)
+	}
+	incID = inc["id"].(string)
+	res, inc = do(t, "PATCH", srv.URL+"/api/incidents/"+incID, `{"status":"resolved","message":"swapped drive"}`)
+	if inc["status"] != "resolved" {
+		t.Fatalf("resolve: %v", inc)
+	}
+	ups, _ := inc["updates"].([]any)
+	if len(ups) < 2 {
+		t.Fatalf("updates timeline: %v", inc["updates"])
+	}
+
+	// Maintenance window suppresses a transition's side-effects.
+	_, mw := do(t, "POST", srv.URL+"/api/maintenance",
+		`{"title":"upgrade","startsAt":"`+time.Now().Add(-time.Hour).UTC().Format(time.RFC3339)+
+			`","endsAt":"`+time.Now().Add(time.Hour).UTC().Format(time.RFC3339)+`"}`)
+	if mw["active"] != true {
+		t.Fatalf("window should be active: %v", mw)
+	}
+	do(t, "PATCH", srv.URL+"/api/monitors/"+id, `{"url":"http://127.0.0.1:1"}`)
+	do(t, "POST", srv.URL+"/api/monitors/"+id+"/check", "") // down under maintenance
+	req, _ = http.NewRequest("GET", srv.URL+"/api/incidents?status=open", nil)
+	r, _ = http.DefaultClient.Do(req)
+	incs = nil
+	_ = json.NewDecoder(r.Body).Decode(&incs)
+	r.Body.Close()
+	if len(incs) != 0 {
+		t.Fatalf("maintenance must suppress auto-incidents: %v", incs)
+	}
+
+	// Status page + public view shows maintenance state.
+	res, sp := do(t, "POST", srv.URL+"/api/status-pages", `{"title":"Ops","slug":"ops"}`)
+	if res.StatusCode != http.StatusCreated || sp["slug"] != "ops" {
+		t.Fatalf("status page: %v", sp)
+	}
+	res, pub := do(t, "GET", srv.URL+"/api/status-pages/ops/public", "")
+	if res.StatusCode != http.StatusOK || pub["overall"] != "maintenance" {
+		t.Fatalf("public status: %v", pub)
+	}
+	mons, _ := pub["monitors"].([]any)
+	if len(mons) != 1 {
+		t.Fatalf("public monitors: %v", pub["monitors"])
+	}
+	if m0, _ := mons[0].(map[string]any); m0["status"] != "maintenance" {
+		t.Fatalf("monitor should read maintenance: %v", m0)
+	}
+
+	// Badge + metrics smoke.
+	res, _ = do(t, "GET", srv.URL+"/api/badge/monitor/"+id+".svg", "")
+	if res.StatusCode != http.StatusOK {
+		t.Fatalf("badge: %d", res.StatusCode)
+	}
+	res, _ = do(t, "GET", srv.URL+"/api/metrics", "")
+	if res.StatusCode != http.StatusOK {
+		t.Fatalf("metrics: %d", res.StatusCode)
+	}
+	req, _ = http.NewRequest("GET", srv.URL+"/api/metrics", nil)
+	r, _ = http.DefaultClient.Do(req)
+	body, _ := io.ReadAll(r.Body)
+	r.Body.Close()
+	if !strings.Contains(string(body), "dash_monitors_total") {
+		t.Fatalf("metrics body: %s", body)
+	}
+
+	// CSV import.
+	req, _ = http.NewRequest("POST", srv.URL+"/api/import/csv?kind=monitors",
+		strings.NewReader("name,type,url\nA,http,https://a.example\nB,tcp,https://b.example:9\n"))
+	req.Header.Set("Content-Type", "text/csv")
+	r, _ = http.DefaultClient.Do(req)
+	var out map[string]any
+	_ = json.NewDecoder(r.Body).Decode(&out)
+	r.Body.Close()
+	if out["created"].(float64) != 2 {
+		t.Fatalf("csv import: %v", out)
+	}
+}
+
 func TestMidpoint(t *testing.T) {
 	f := func(v float64) *float64 { return &v }
 	if got := midpoint(nil, nil); got != 1024 {

apps/backend/internal/api/badge.go

@@ -0,0 +1,92 @@
+package api
+
+import (
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+)
+
+// Stateless SVG shields rendered from live rows: /api/badge/<kind>/<id>.svg
+// kinds: monitor (status+uptime), domain (days to expiry), system (status+cpu).
+
+var badgeColors = map[string]string{
+	"up":       "#3fb950",
+	"down":     "#f85149",
+	"pending":  "#8b949e",
+	"expired":  "#f85149",
+	"expiring": "#d29922",
+	"ok":       "#3fb950",
+	"unknown":  "#8b949e",
+}
+
+func badgeSVG(c *gin.Context, label, value, color string) {
+	// Fixed-width font assumption is deliberate — shields embed anywhere.
+	lw := 6*len(label) + 12
+	vw := 6*len(value) + 12
+	c.Header("Content-Type", "image/svg+xml")
+	c.Header("Cache-Control", "no-cache")
+	c.String(http.StatusOK, fmt.Sprintf(`<svg xmlns="http://www.w3.org/2000/svg" width="%d" height="20" role="img" aria-label="%s: %s">
+<linearGradient id="s" x2="0" y2="100%%"><stop offset="0" stop-color="#fff" stop-opacity=".7"/><stop offset="1" stop-opacity=".7"/></linearGradient>
+<clipPath id="r"><rect width="%d" height="20" rx="3"/></clipPath>
+<g clip-path="url(#r)">
+<rect width="%d" height="20" fill="#3a3f46"/>
+<rect x="%d" width="%d" height="20" fill="%s"/>
+<rect width="%d" height="20" fill="url(#s)" fill-opacity=".1"/>
+</g>
+<g fill="#fff" font-family="DejaVu Sans,Verdana,sans-serif" font-size="11">
+<text x="%d" y="14">%s</text>
+<text x="%d" y="14">%s</text>
+</g></svg>`,
+		lw+vw, label, value, lw+vw, lw, lw, vw, color, lw+vw, 6, label, lw+6, value))
+}
+
+func (s *Server) badge(c *gin.Context) {
+	kind := c.Param("kind")
+	// Route is /badge/<kind>/<file>; the conventional suffix is optional.
+	id := strings.TrimSuffix(c.Param("file"), ".svg")
+
+	switch kind {
+	case "monitor":
+		var name, status string
+		err := s.db.QueryRow(`SELECT name, status FROM monitors WHERE id = ?`, id).Scan(&name, &status)
+		if err != nil {
+			badgeSVG(c, "monitor", "unknown", badgeColors["unknown"])
+			return
+		}
+		uptime := s.monitorStats(id).Uptime24h
+		badgeSVG(c, name, fmt.Sprintf("%s · %.1f%%", status, uptime), badgeColors[status])
+	case "domain":
+		var name string
+		var expiry *string
+		err := s.db.QueryRow(`SELECT name, expiry_date FROM domains WHERE id = ?`, id).Scan(&name, &expiry)
+		if err != nil {
+			badgeSVG(c, "domain", "unknown", badgeColors["unknown"])
+			return
+		}
+		label, color := "unknown", badgeColors["unknown"]
+		if days := daysUntil(expiry); days != nil {
+			switch {
+			case *days < 0:
+				label, color = "expired", badgeColors["expired"]
+			case *days <= 30:
+				label, color = strconv.Itoa(*days)+"d left", badgeColors["expiring"]
+			default:
+				label, color = strconv.Itoa(*days)+"d left", badgeColors["ok"]
+			}
+		}
+		badgeSVG(c, name, label, color)
+	case "system":
+		var name, status string
+		err := s.db.QueryRow(`SELECT name, status FROM systems WHERE id = ?`, id).Scan(&name, &status)
+		if err != nil {
+			badgeSVG(c, "system", "unknown", badgeColors["unknown"])
+			return
+		}
+		badgeSVG(c, name, status, badgeColors[status])
+	default:
+		fail(c, http.StatusNotFound, "unknown badge kind")
+	}
+}

apps/backend/internal/api/bulk.go

@@ -0,0 +1,96 @@
+package api
+
+import (
+	"encoding/csv"
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/gin-gonic/gin"
+)
+
+// POST /api/import/csv?kind=monitors|domains — header-driven CSV bulk import.
+// Monitors: name,type,url,hostname,port,interval — name + (url|hostname) needed.
+// Domains:  name — one per row.
+
+func (s *Server) importCSV(c *gin.Context) {
+	kind := c.DefaultQuery("kind", "monitors")
+	if kind != "monitors" && kind != "domains" {
+		fail(c, http.StatusBadRequest, "kind must be monitors or domains")
+		return
+	}
+	rd := csv.NewReader(c.Request.Body)
+	rd.FieldsPerRecord = -1 // tolerate ragged rows; header drives positions
+	recs, err := rd.ReadAll()
+	if err != nil || len(recs) < 2 {
+		fail(c, http.StatusBadRequest, "csv with a header row and at least one entry required")
+		return
+	}
+	head := map[string]int{}
+	for i, h := range recs[0] {
+		head[strings.ToLower(strings.TrimSpace(h))] = i
+	}
+	cell := func(rec []string, col string) string {
+		if i, ok := head[col]; ok && i < len(rec) {
+			return strings.TrimSpace(rec[i])
+		}
+		return ""
+	}
+
+	var created, skipped int
+	var errs []string
+	for i, rec := range recs[1:] {
+		row := i + 2 // header is row 1
+		name := cell(rec, "name")
+		if name == "" {
+			skipped++
+			continue
+		}
+		if kind == "domains" {
+			if _, err := s.db.Exec(`INSERT INTO domains (id, name) VALUES (?, ?)`,
+				newID("d"), strings.ToLower(name)); err != nil {
+				if strings.Contains(err.Error(), "UNIQUE") {
+					skipped++
+					continue
+				}
+				errs = append(errs, fmt.Sprintf("row %d: %v", row, err))
+				continue
+			}
+			created++
+			continue
+		}
+
+		// monitors
+		typ := orDefault(cell(rec, "type"), "http")
+		if !validMonitorType(typ) {
+			errs = append(errs, fmt.Sprintf("row %d: bad type %q", row, typ))
+			continue
+		}
+		url, host := cell(rec, "url"), cell(rec, "hostname")
+		if url == "" && host == "" {
+			errs = append(errs, fmt.Sprintf("row %d: url or hostname required", row))
+			continue
+		}
+		port, _ := strconv.Atoi(cell(rec, "port"))
+		interval, _ := strconv.Atoi(cell(rec, "interval"))
+		if interval <= 0 {
+			interval = 60
+		}
+		token := ""
+		if typ == "push" {
+			token = newID("push")
+		}
+		if _, err := s.db.Exec(`INSERT INTO monitors
+			(id, name, type, url, hostname, port, interval_s, push_token, position)
+			VALUES (?,?,?,?,?,?,?,?,?)`,
+			newID("m"), name, typ, url, host, port, interval, token,
+			float64(time.Now().UnixNano())/1e9); err != nil {
+			errs = append(errs, fmt.Sprintf("row %d: %v", row, err))
+			continue
+		}
+		created++
+	}
+	c.JSON(http.StatusOK, gin.H{"created": created, "skipped": skipped, "errors": errs})
+}

apps/backend/internal/api/domains.go

@@ -0,0 +1,517 @@
+package api
+
+import (
+	"context"
+	"database/sql"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"strconv"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/tdvorak/dash/internal/domain"
+	"github.com/tdvorak/dash/internal/widget"
+	"go.uber.org/zap"
+)
+
+// ---------- model ----------
+
+const domainCols = `id, name, tld, active, auto_renew, alert_days_before, tags, notes,
+	expiry_date, creation_date, updated_date, registrar_name, registrar_id,
+	registrar_url, registry_domain_id, dnssec, statuses, privacy_enabled,
+	transfer_lock, registrant_name, registrant_org, registrant_country,
+	abuse_email, name_servers, mx_records, txt_records, cname, ipv4, ipv6,
+	ssl_issuer, ssl_valid_from, ssl_valid_to, ssl_subject, ssl_fingerprint,
+	ssl_key_size, ssl_sig_algo, ssl_alt_names, host_country, host_country_code,
+	host_region, host_city, host_isp, host_org, host_as, host_lat, host_lon,
+	dns_provider, email_provider, hosting_provider, ca_provider, headers,
+	favicon_url, lookup_error, interval_h, last_checked, position, created_at`
+
+// domainRow mirrors the domains table; JSON text columns decode on scan.
+type domainRow struct {
+	ID               string   `json:"id"`
+	Name             string   `json:"name"`
+	TLD              string   `json:"tld"`
+	Active           bool     `json:"active"`
+	AutoRenew        bool     `json:"autoRenew"`
+	AlertDaysBefore  int      `json:"alertDaysBefore"`
+	Tags             []string `json:"tags"`
+	Notes            string   `json:"notes"`
+	ExpiryDate       *string  `json:"expiryDate"`
+	CreationDate     *string  `json:"creationDate"`
+	UpdatedDate      *string  `json:"updatedDate"`
+	RegistrarName    string   `json:"registrarName"`
+	RegistrarID      string   `json:"registrarId"`
+	RegistrarURL     string   `json:"registrarUrl"`
+	RegistryDomainID string   `json:"registryDomainId"`
+	DNSSEC           string   `json:"dnssec"`
+	Statuses         []string `json:"statuses"`
+	PrivacyEnabled   bool     `json:"privacyEnabled"`
+	TransferLock     bool     `json:"transferLock"`
+	RegistrantName   string   `json:"registrantName"`
+	RegistrantOrg    string   `json:"registrantOrg"`
+	RegistrantCountry string  `json:"registrantCountry"`
+	AbuseEmail       string   `json:"abuseEmail"`
+	NameServers      []string `json:"nameServers"`
+	MXRecords        []string `json:"mxRecords"`
+	TXTRecords       []string `json:"txtRecords"`
+	CNAME            string   `json:"cname"`
+	IPv4             []string `json:"ipv4"`
+	IPv6             []string `json:"ipv6"`
+	SSLIssuer        string   `json:"sslIssuer"`
+	SSLValidFrom     *string  `json:"sslValidFrom"`
+	SSLValidTo       *string  `json:"sslValidTo"`
+	SSLSubject       string   `json:"sslSubject"`
+	SSLFingerprint   string   `json:"sslFingerprint"`
+	SSLKeySize       int      `json:"sslKeySize"`
+	SSLSigAlgo       string   `json:"sslSigAlgo"`
+	SSLAltNames      []string `json:"sslAltNames"`
+	HostCountry      string   `json:"hostCountry"`
+	HostCountryCode  string   `json:"hostCountryCode"`
+	HostRegion       string   `json:"hostRegion"`
+	HostCity         string   `json:"hostCity"`
+	HostISP          string   `json:"hostIsp"`
+	HostOrg          string   `json:"hostOrg"`
+	HostAS           string   `json:"hostAs"`
+	HostLat          float64  `json:"hostLat"`
+	HostLon          float64  `json:"hostLon"`
+	DNSProvider      string   `json:"dnsProvider"`
+	EmailProvider    string   `json:"emailProvider"`
+	HostingProvider  string   `json:"hostingProvider"`
+	CAProvider       string   `json:"caProvider"`
+	Headers          map[string]string `json:"headers"`
+	FaviconURL       string   `json:"faviconUrl"`
+	LookupError      string   `json:"lookupError"`
+	IntervalH        int      `json:"intervalH"`
+	LastChecked      *string  `json:"lastChecked"`
+	Position         float64  `json:"position"`
+	CreatedAt        string   `json:"createdAt"`
+}
+
+func scanDomain(row interface{ Scan(...any) error }) (*domainRow, error) {
+	var d domainRow
+	var tags, statuses, ns, mx, txt, v4, v6, altNames, headers string
+	var active, autoRenew, privacy, lock int
+	err := row.Scan(&d.ID, &d.Name, &d.TLD, &active, &autoRenew, &d.AlertDaysBefore,
+		&tags, &d.Notes, &d.ExpiryDate, &d.CreationDate, &d.UpdatedDate,
+		&d.RegistrarName, &d.RegistrarID, &d.RegistrarURL, &d.RegistryDomainID,
+		&d.DNSSEC, &statuses, &privacy, &lock, &d.RegistrantName, &d.RegistrantOrg,
+		&d.RegistrantCountry, &d.AbuseEmail, &ns, &mx, &txt, &d.CNAME, &v4, &v6,
+		&d.SSLIssuer, &d.SSLValidFrom, &d.SSLValidTo, &d.SSLSubject, &d.SSLFingerprint,
+		&d.SSLKeySize, &d.SSLSigAlgo, &altNames, &d.HostCountry, &d.HostCountryCode,
+		&d.HostRegion, &d.HostCity, &d.HostISP, &d.HostOrg, &d.HostAS, &d.HostLat,
+		&d.HostLon, &d.DNSProvider, &d.EmailProvider, &d.HostingProvider, &d.CAProvider,
+		&headers, &d.FaviconURL, &d.LookupError, &d.IntervalH, &d.LastChecked,
+		&d.Position, &d.CreatedAt)
+	if err != nil {
+		return nil, err
+	}
+	d.Active = active != 0
+	d.AutoRenew = autoRenew != 0
+	d.PrivacyEnabled = privacy != 0
+	d.TransferLock = lock != 0
+	d.Tags = decodeList(tags)
+	d.Statuses = decodeList(statuses)
+	d.NameServers = decodeList(ns)
+	d.MXRecords = decodeList(mx)
+	d.TXTRecords = decodeList(txt)
+	d.IPv4 = decodeList(v4)
+	d.IPv6 = decodeList(v6)
+	d.SSLAltNames = decodeList(altNames)
+	d.Headers = map[string]string{}
+	_ = json.Unmarshal([]byte(headers), &d.Headers)
+	return &d, nil
+}
+
+func decodeList(s string) []string {
+	var out []string
+	_ = json.Unmarshal([]byte(s), &out)
+	if out == nil {
+		out = []string{}
+	}
+	return out
+}
+
+func (s *Server) loadDomain(id string) (*domainRow, error) {
+	return scanDomain(s.db.QueryRow(`SELECT `+domainCols+` FROM domains WHERE id = ?`, id))
+}
+
+// domainView adds computed countdowns the cards/detail page render directly.
+type domainView struct {
+	*domainRow
+	DaysUntilExpiry    *int `json:"daysUntilExpiry"`
+	SSLDaysUntilExpiry *int `json:"sslDaysUntilExpiry"`
+	Expiring           bool `json:"expiring"`
+	SSLExpiring        bool `json:"sslExpiring"`
+}
+
+func daysUntil(iso *string) *int {
+	if iso == nil {
+		return nil
+	}
+	t, err := time.Parse(time.RFC3339, *iso)
+	if err != nil {
+		if t, err = time.Parse("2006-01-02", *iso); err != nil {
+			return nil
+		}
+	}
+	d := int(time.Until(t).Hours() / 24)
+	return &d
+}
+
+func viewOf(d *domainRow) domainView {
+	v := domainView{domainRow: d}
+	v.DaysUntilExpiry = daysUntil(d.ExpiryDate)
+	v.SSLDaysUntilExpiry = daysUntil(d.SSLValidTo)
+	if v.DaysUntilExpiry != nil {
+		v.Expiring = *v.DaysUntilExpiry <= d.AlertDaysBefore
+	}
+	if v.SSLDaysUntilExpiry != nil {
+		v.SSLExpiring = *v.SSLDaysUntilExpiry <= d.AlertDaysBefore
+	}
+	return v
+}
+
+// ---------- handlers ----------
+
+func (s *Server) listDomainsH(c *gin.Context) {
+	rows, err := s.db.Query(`SELECT ` + domainCols + ` FROM domains ORDER BY position, name`)
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	defer rows.Close()
+	out := []domainView{}
+	for rows.Next() {
+		if d, err := scanDomain(rows); err == nil {
+			out = append(out, viewOf(d))
+		}
+	}
+	c.JSON(http.StatusOK, out)
+}
+
+type domainInput struct {
+	Name            *string  `json:"name"`
+	Active          *bool    `json:"active"`
+	AutoRenew       *bool    `json:"autoRenew"`
+	AlertDaysBefore *int     `json:"alertDaysBefore"`
+	IntervalH       *int     `json:"intervalH"`
+	Tags            []string `json:"tags"`
+	Notes           *string  `json:"notes"`
+}
+
+func (s *Server) createDomain(c *gin.Context) {
+	var in domainInput
+	if err := c.ShouldBindJSON(&in); err != nil || in.Name == nil {
+		fail(c, http.StatusBadRequest, "name required")
+		return
+	}
+	name := domain.Clean(*in.Name)
+	if !domain.Valid(name) {
+		fail(c, http.StatusBadRequest, "invalid domain name")
+		return
+	}
+	id := newID("d")
+	tags, _ := json.Marshal(in.Tags)
+	if in.Tags == nil {
+		tags = []byte("[]")
+	}
+	_, err := s.db.Exec(`INSERT INTO domains
+		(id, name, tld, active, auto_renew, alert_days_before, tags, notes, interval_h, position)
+		VALUES (?,?,?,?,?,?,?,?,?,?)`,
+		id, name, tldFor(name), boolOr2(in.Active, true), boolOr(in.AutoRenew),
+		intOr2(in.AlertDaysBefore, 30), string(tags), strOr(in.Notes),
+		intOr2(in.IntervalH, 24), float64(time.Now().UnixNano())/1e9)
+	if err != nil {
+		fail(c, http.StatusConflict, "domain already tracked or insert failed")
+		return
+	}
+	// First lookup runs inline so the response carries real data.
+	s.refreshDomain(id)
+	d, err := s.loadDomain(id)
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	c.JSON(http.StatusCreated, viewOf(d))
+}
+
+func tldFor(name string) string {
+	for i := len(name) - 1; i >= 0; i-- {
+		if name[i] == '.' {
+			return name[i+1:]
+		}
+	}
+	return ""
+}
+
+func (s *Server) getDomain(c *gin.Context) {
+	d, err := s.loadDomain(c.Param("id"))
+	if notFound(err) {
+		fail(c, http.StatusNotFound, "domain not found")
+		return
+	}
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	c.JSON(http.StatusOK, viewOf(d))
+}
+
+func (s *Server) patchDomain(c *gin.Context) {
+	id := c.Param("id")
+	if _, err := s.loadDomain(id); notFound(err) {
+		fail(c, http.StatusNotFound, "domain not found")
+		return
+	}
+	var in domainInput
+	if err := c.ShouldBindJSON(&in); err != nil {
+		fail(c, http.StatusBadRequest, "invalid body")
+		return
+	}
+	if in.Name != nil {
+		name := domain.Clean(*in.Name)
+		if !domain.Valid(name) {
+			fail(c, http.StatusBadRequest, "invalid domain name")
+			return
+		}
+		_, _ = s.db.Exec(`UPDATE domains SET name = ?, tld = ? WHERE id = ?`, name, tldFor(name), id)
+	}
+	if in.Notes != nil {
+		_, _ = s.db.Exec(`UPDATE domains SET notes = ? WHERE id = ?`, *in.Notes, id)
+	}
+	if in.AlertDaysBefore != nil {
+		_, _ = s.db.Exec(`UPDATE domains SET alert_days_before = ? WHERE id = ?`, *in.AlertDaysBefore, id)
+	}
+	if in.IntervalH != nil {
+		_, _ = s.db.Exec(`UPDATE domains SET interval_h = ? WHERE id = ?`, *in.IntervalH, id)
+	}
+	if in.Active != nil {
+		_, _ = s.db.Exec(`UPDATE domains SET active = ? WHERE id = ?`, *in.Active, id)
+	}
+	if in.AutoRenew != nil {
+		_, _ = s.db.Exec(`UPDATE domains SET auto_renew = ? WHERE id = ?`, *in.AutoRenew, id)
+	}
+	if in.Tags != nil {
+		tags, _ := json.Marshal(in.Tags)
+		_, _ = s.db.Exec(`UPDATE domains SET tags = ? WHERE id = ?`, string(tags), id)
+	}
+	d, err := s.loadDomain(id)
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	c.JSON(http.StatusOK, viewOf(d))
+}
+
+func (s *Server) deleteDomain(c *gin.Context) {
+	res, err := s.db.Exec(`DELETE FROM domains WHERE id = ?`, c.Param("id"))
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	if n, _ := res.RowsAffected(); n == 0 {
+		fail(c, http.StatusNotFound, "domain not found")
+		return
+	}
+	c.Status(http.StatusNoContent)
+}
+
+// refreshDomain re-runs the full lookup and writes a snapshot row. Expiry
+// threshold crossings fire notify events on the edge (only when a state
+// newly becomes true, not on every refresh).
+func (s *Server) refreshDomain(id string) {
+	row, err := s.loadDomain(id)
+	if err != nil {
+		return
+	}
+	prev := viewOf(row)
+	ctx, cancel := context.WithTimeout(context.Background(), 45*time.Second)
+	defer cancel()
+	r := s.lookup(ctx, row.Name)
+	s.applyResult(id, r)
+
+	next, err := s.loadDomain(id)
+	if err != nil {
+		return
+	}
+	nv := viewOf(next)
+	switch {
+	case nv.DaysUntilExpiry != nil && *nv.DaysUntilExpiry < 0 && !(prev.DaysUntilExpiry != nil && *prev.DaysUntilExpiry < 0):
+		s.notify("domain.expired", next.Name, fmt.Sprintf("Domain %s has expired", next.Name))
+	case nv.Expiring && !prev.Expiring:
+		s.notify("domain.expiring", next.Name,
+			fmt.Sprintf("Domain %s expires in %d days", next.Name, *nv.DaysUntilExpiry))
+	}
+	if nv.SSLExpiring && !prev.SSLExpiring && nv.SSLDaysUntilExpiry != nil {
+		s.notify("domain.sslExpiring", next.Name,
+			fmt.Sprintf("TLS certificate for %s expires in %d days", next.Name, *nv.SSLDaysUntilExpiry))
+	}
+}
+
+func (s *Server) refreshDomainH(c *gin.Context) {
+	id := c.Param("id")
+	if _, err := s.loadDomain(id); notFound(err) {
+		fail(c, http.StatusNotFound, "domain not found")
+		return
+	}
+	s.refreshDomain(id)
+	d, err := s.loadDomain(id)
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	c.JSON(http.StatusOK, viewOf(d))
+}
+
+// applyResult persists a lookup Result and appends a domain_checks snapshot.
+func (s *Server) applyResult(id string, r *domain.Result) {
+	enc := func(v []string) string {
+		b, _ := json.Marshal(v)
+		return string(b)
+	}
+	var expiry, created, updated, sslFrom, sslTo *string
+	fmtT := func(t *time.Time) *string {
+		if t == nil {
+			return nil
+		}
+		s := t.UTC().Format(time.RFC3339)
+		return &s
+	}
+	expiry, created, updated = fmtT(r.ExpiryDate), fmtT(r.CreationDate), fmtT(r.UpdatedDate)
+	sslFrom, sslTo = fmtT(r.SSLValidFrom), fmtT(r.SSLValidTo)
+	hdr, _ := json.Marshal(r.Headers)
+
+	_, err := s.db.Exec(`UPDATE domains SET
+		expiry_date=?, creation_date=?, updated_date=?, registrar_name=?,
+		registrar_id=?, registrar_url=?, registry_domain_id=?, dnssec=?,
+		statuses=?, privacy_enabled=?, transfer_lock=?, registrant_name=?,
+		registrant_org=?, registrant_country=?, abuse_email=?, name_servers=?,
+		mx_records=?, txt_records=?, cname=?, ipv4=?, ipv6=?, ssl_issuer=?,
+		ssl_valid_from=?, ssl_valid_to=?, ssl_subject=?, ssl_fingerprint=?,
+		ssl_key_size=?, ssl_sig_algo=?, ssl_alt_names=?, host_country=?,
+		host_country_code=?, host_region=?, host_city=?, host_isp=?, host_org=?,
+		host_as=?, host_lat=?, host_lon=?, dns_provider=?, email_provider=?,
+		hosting_provider=?, ca_provider=?, headers=?, favicon_url=?,
+		lookup_error=?, last_checked=strftime('%Y-%m-%dT%H:%M:%fZ','now')
+		WHERE id=?`,
+		expiry, created, updated, r.RegistrarName, r.RegistrarID, r.RegistrarURL,
+		r.RegistryDomainID, r.DNSSEC, enc(r.Statuses), r.PrivacyEnabled,
+		r.TransferLock, r.RegistrantName, r.RegistrantOrg, r.RegistrantCountry,
+		r.AbuseEmail, enc(r.NameServers), enc(r.MXRecords), enc(r.TXTRecords),
+		r.CNAME, enc(r.IPv4), enc(r.IPv6), r.SSLIssuer, sslFrom, sslTo,
+		r.SSLSubject, r.SSLFingerprint, r.SSLKeySize, r.SSLSigAlgo,
+		enc(r.SSLAltNames), r.HostCountry, r.HostCountryCode, r.HostRegion,
+		r.HostCity, r.HostISP, r.HostOrg, r.HostAS, r.HostLat, r.HostLon,
+		r.DNSProvider, r.EmailProvider, r.HostingProvider, r.CAProvider,
+		string(hdr), r.FaviconURL, truncate(r.Error, 300), id)
+	if err != nil {
+		s.log.Error("domain apply", zap.Error(err))
+		return
+	}
+	_, _ = s.db.Exec(`INSERT INTO domain_checks (domain_id, expiry_date, ssl_valid_to, ipv4, name_servers)
+		VALUES (?,?,?,?,?)`, id, expiry, sslTo, enc(r.IPv4), enc(r.NameServers))
+}
+
+// domainChecks returns the snapshot history — powers change timelines later.
+func (s *Server) domainChecks(c *gin.Context) {
+	limit, _ := strconv.Atoi(c.DefaultQuery("limit", "50"))
+	if limit <= 0 || limit > 500 {
+		limit = 50
+	}
+	rows, err := s.db.Query(`SELECT id, expiry_date, ssl_valid_to, ipv4, name_servers, checked_at
+		FROM domain_checks WHERE domain_id = ? ORDER BY checked_at DESC LIMIT ?`,
+		c.Param("id"), limit)
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	defer rows.Close()
+	type chk struct {
+		ID          int      `json:"id"`
+		ExpiryDate  *string  `json:"expiryDate"`
+		SSLValidTo  *string  `json:"sslValidTo"`
+		IPv4        []string `json:"ipv4"`
+		NameServers []string `json:"nameServers"`
+		CheckedAt   string   `json:"checkedAt"`
+	}
+	out := []chk{}
+	for rows.Next() {
+		var k chk
+		var v4, ns string
+		if err := rows.Scan(&k.ID, &k.ExpiryDate, &k.SSLValidTo, &v4, &ns, &k.CheckedAt); err != nil {
+			fail(c, http.StatusInternalServerError, err.Error())
+			return
+		}
+		k.IPv4, k.NameServers = decodeList(v4), decodeList(ns)
+		out = append(out, k)
+	}
+	c.JSON(http.StatusOK, out)
+}
+
+// ---------- scheduler ----------
+
+// sweepDomains refreshes domains whose interval_h has elapsed. Runs inside
+// the monitor tick — the SQL gate keeps it near-free when nothing is due.
+func (s *Server) sweepDomains() {
+	rows, err := s.db.Query(`SELECT ` + domainCols + ` FROM domains
+		WHERE active = 1
+		AND (last_checked IS NULL OR datetime(last_checked, '+' || interval_h || ' hours') <= datetime('now'))`)
+	if err != nil {
+		s.log.Error("domain sweep", zap.Error(err))
+		return
+	}
+	var due []domainRow
+	for rows.Next() {
+		if d, err := scanDomain(rows); err == nil {
+			due = append(due, *d)
+		}
+	}
+	rows.Close()
+	for i := range due {
+		checkSem <- struct{}{}
+		go func(id string) {
+			defer func() { <-checkSem }()
+			s.refreshDomain(id)
+		}(due[i].ID)
+	}
+}
+
+// ---------- widget fetcher ----------
+
+// domainWidget serves board tiles bound to a domain via config.domainId.
+type domainWidget struct{ db *sql.DB }
+
+func (w *domainWidget) Meta() widget.Type {
+	return widget.Type{
+		Type: "domain", Name: "Domain",
+		Description: "Expiry countdown for a tracked domain",
+		Fields: []widget.Field{
+			{Key: "domainId", Label: "Domain", Required: true},
+		},
+	}
+}
+
+func (w *domainWidget) Fetch(_ context.Context, cfg json.RawMessage) (any, error) {
+	var c struct {
+		DomainID string `json:"domainId"`
+	}
+	if err := json.Unmarshal(cfg, &c); err != nil || c.DomainID == "" {
+		return nil, errors.New("config.domainId required")
+	}
+	d, err := scanDomain(w.db.QueryRow(`SELECT `+domainCols+` FROM domains WHERE id = ?`, c.DomainID))
+	if err != nil {
+		return nil, errors.New("domain not found")
+	}
+	v := viewOf(d)
+	return map[string]any{
+		"name":            d.Name,
+		"faviconUrl":      d.FaviconURL,
+		"daysUntilExpiry": v.DaysUntilExpiry,
+		"sslDaysUntilExpiry": v.SSLDaysUntilExpiry,
+		"expiring":        v.Expiring,
+		"registrar":       d.RegistrarName,
+	}, nil
+}

apps/backend/internal/api/importers.go

@@ -0,0 +1,322 @@
+package api
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+	"github.com/goccy/go-yaml"
+)
+
+// diBase mirrors the frontend's dashboard-icons CDN root (ServiceDialog).
+const diBase = "https://cdn.jsdelivr.net/gh/homarr-labs/dashboard-icons/png"
+
+// importExternal ingests a foreign dashboard config — Homepage services.yml,
+// Homarr JSON export, or Dashy conf.yml — and replaces the board with it.
+// Format is sniffed from the body; settings are left untouched.
+func (s *Server) importExternal(c *gin.Context) {
+	body, err := io.ReadAll(io.LimitReader(c.Request.Body, 8<<20))
+	if err != nil || len(body) == 0 {
+		fail(c, http.StatusBadRequest, "empty or unreadable body")
+		return
+	}
+	sections, err := parseExternal(body)
+	if err != nil {
+		fail(c, http.StatusBadRequest, err.Error())
+		return
+	}
+	if err := s.replaceBoard(sections, nil); err != nil {
+		failImport(c, err)
+		return
+	}
+	board, err := s.board()
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	c.JSON(http.StatusOK, board)
+}
+
+// parseExternal sniffs the config format: JSON decodes as Homarr; a YAML
+// sequence is Homepage's grouped services list; a YAML mapping carrying
+// `sections` is a Dashy conf.yml.
+func parseExternal(body []byte) ([]Section, error) {
+	var j any
+	if json.Unmarshal(body, &j) == nil {
+		return parseHomarr(j)
+	}
+	var y any
+	if err := yaml.Unmarshal(body, &y); err != nil {
+		return nil, errors.New("unreadable file — expected JSON or YAML")
+	}
+	switch root := y.(type) {
+	case []any:
+		return parseHomepage(root)
+	case map[string]any:
+		if _, ok := root["sections"]; ok {
+			return parseDashy(body)
+		}
+	}
+	return nil, errors.New("unrecognized config — expected a Homepage services.yml, Homarr JSON export, or Dashy conf.yml")
+}
+
+// ---------- Homepage ----------
+
+// parseHomepage walks a services.yml: a sequence of single-key maps
+// (group name -> sequence of single-key service maps). Bare single-key
+// entries at the top level land in an "Imported" section.
+func parseHomepage(groups []any) ([]Section, error) {
+	var secs []Section
+	loose := Section{Name: "Imported"}
+	for _, g := range groups {
+		gm, ok := g.(map[string]any)
+		if !ok {
+			continue
+		}
+		for name, v := range gm {
+			switch val := v.(type) {
+			case []any:
+				sec := Section{Name: name, Items: homepageItems(val)}
+				if len(sec.Items) > 0 {
+					secs = append(secs, sec)
+				}
+			case map[string]any:
+				if it, ok := homepageService(name, val); ok {
+					loose.Items = append(loose.Items, it)
+				}
+			}
+		}
+	}
+	if len(loose.Items) > 0 {
+		secs = append([]Section{loose}, secs...)
+	}
+	if len(secs) == 0 {
+		return nil, errors.New("homepage: no importable services found")
+	}
+	return assignIDs(secs), nil
+}
+
+func homepageItems(list []any) []Item {
+	var items []Item
+	for _, raw := range list {
+		m, ok := raw.(map[string]any)
+		if !ok {
+			continue
+		}
+		for name, fields := range m {
+			fm, _ := fields.(map[string]any)
+			if it, ok := homepageService(name, fm); ok {
+				items = append(items, it)
+			}
+		}
+	}
+	return items
+}
+
+// homepageService maps one service entry. Entries without a reachable URL
+// (pure widget config, bare ping targets) are skipped rather than failing
+// the whole import.
+func homepageService(name string, fields map[string]any) (Item, bool) {
+	u := strOf(fields, "href", "siteMonitor", "ping")
+	if strings.TrimSpace(name) == "" || !validURL(u) {
+		return Item{}, false
+	}
+	return importedItem(name, resolveIcon(strOf(fields, "icon"), u), u), true
+}
+
+// ---------- Homarr ----------
+
+// parseHomarr tolerates Homarr's shifting export shapes: `categories[].apps`,
+// a flat `apps` array grouped by category id, or board `sections[].items`.
+func parseHomarr(root any) ([]Section, error) {
+	m, ok := root.(map[string]any)
+	if !ok {
+		return nil, errors.New("homarr: expected a JSON object")
+	}
+	var secs []Section
+	seen := map[string]bool{}
+	catNames := map[string]string{}
+
+	for _, c := range arrOf(m["categories"]) {
+		cm, _ := c.(map[string]any)
+		if name := strOf(cm, "name"); name != "" {
+			catNames[strOf(cm, "id")] = name
+			if s := sectionFromApps(name, arrOf(cm["apps"]), seen); len(s.Items) > 0 {
+				secs = append(secs, s)
+			}
+		}
+	}
+
+	if apps := arrOf(m["apps"]); len(apps) > 0 {
+		var order []string
+		byCat := map[string][]any{}
+		for _, a := range apps {
+			am, _ := a.(map[string]any)
+			cat := strOf(am, "categoryId", "category")
+			if _, ok := byCat[cat]; !ok {
+				order = append(order, cat)
+			}
+			byCat[cat] = append(byCat[cat], a)
+		}
+		for _, cat := range order {
+			name := catNames[cat]
+			if name == "" {
+				name = "Imported"
+			}
+			if s := sectionFromApps(name, byCat[cat], seen); len(s.Items) > 0 {
+				secs = append(secs, s)
+			}
+		}
+	}
+
+	for _, raw := range arrOf(m["sections"]) {
+		sm, _ := raw.(map[string]any)
+		if s := sectionFromApps(strOf(sm, "name"), arrOf(sm["items"]), seen); len(s.Items) > 0 {
+			secs = append(secs, s)
+		}
+	}
+
+	if len(secs) == 0 {
+		return nil, errors.New("homarr: no apps found")
+	}
+	return assignIDs(secs), nil
+}
+
+func sectionFromApps(name string, apps []any, seen map[string]bool) Section {
+	sec := Section{Name: orDefault(name, "Imported")}
+	for _, a := range apps {
+		am, _ := a.(map[string]any)
+		it, ok := homarrItem(am)
+		if !ok || seen[it.Name+"|"+it.URLs[0].URL] {
+			continue
+		}
+		seen[it.Name+"|"+it.URLs[0].URL] = true
+		sec.Items = append(sec.Items, it)
+	}
+	return sec
+}
+
+func homarrItem(m map[string]any) (Item, bool) {
+	name := strOf(m, "name", "title", "label")
+	u := strOf(m, "url", "href", "appUrl", "externalUrl", "internalUrl")
+	if name == "" || !validURL(u) {
+		return Item{}, false
+	}
+	return importedItem(name, resolveIcon(strOf(m, "icon", "iconUrl"), u), u), true
+}
+
+// ---------- Dashy ----------
+
+type dashyConf struct {
+	Sections []struct {
+		Name  string `yaml:"name"`
+		Items []struct {
+			Title string `yaml:"title"`
+			URL   string `yaml:"url"`
+			Icon  string `yaml:"icon"`
+		} `yaml:"items"`
+	} `yaml:"sections"`
+}
+
+func parseDashy(body []byte) ([]Section, error) {
+	var conf dashyConf
+	if err := yaml.Unmarshal(body, &conf); err != nil {
+		return nil, fmt.Errorf("dashy: malformed conf.yml")
+	}
+	var secs []Section
+	for _, ds := range conf.Sections {
+		sec := Section{Name: orDefault(ds.Name, "Imported")}
+		for _, di := range ds.Items {
+			if di.Title == "" || !validURL(di.URL) {
+				continue
+			}
+			sec.Items = append(sec.Items, importedItem(di.Title, resolveIcon(di.Icon, di.URL), di.URL))
+		}
+		secs = append(secs, sec)
+	}
+	if len(secs) == 0 {
+		return nil, errors.New("dashy: no sections found")
+	}
+	return assignIDs(secs), nil
+}
+
+// ---------- shared ----------
+
+// assignIDs stamps fresh ids and 1024-spaced positions on an imported tree.
+func assignIDs(secs []Section) []Section {
+	for si := range secs {
+		secs[si].ID = newID("s")
+		secs[si].Position = float64(si+1) * 1024
+		for ii := range secs[si].Items {
+			it := &secs[si].Items[ii]
+			it.ID = newID("i")
+			it.SectionID = secs[si].ID
+			it.Kind = orDefault(it.Kind, "service")
+			it.Position = float64(ii+1) * 1024
+			for ui := range it.URLs {
+				it.URLs[ui].ID = newID("u")
+				it.URLs[ui].Position = float64(ui+1) * 1024
+			}
+		}
+	}
+	return secs
+}
+
+func importedItem(name, icon, u string) Item {
+	return Item{Kind: "service", Name: name, Icon: icon, URLs: []URL{{URL: u}}}
+}
+
+// resolveIcon maps a foreign icon reference to a usable URL: passthrough for
+// absolute URLs, favicon derivation for Dashy's `favicon`, the dashboard-icons
+// CDN for prefixed or bare slugs, and "" (letter tile) for local file paths
+// that only existed on the old dashboard.
+func resolveIcon(icon, itemURL string) string {
+	icon = strings.TrimSpace(icon)
+	switch {
+	case icon == "":
+		return ""
+	case strings.HasPrefix(icon, "http://"), strings.HasPrefix(icon, "https://"):
+		return icon
+	case icon == "favicon", icon == "generalfavicon":
+		return faviconOf(itemURL)
+	case strings.ContainsAny(icon, "/.\\"):
+		return ""
+	}
+	lower := strings.ToLower(icon)
+	for _, p := range []string{"si-", "sh-", "hl-", "di-", "mdi-"} {
+		if rest, ok := strings.CutPrefix(lower, p); ok {
+			if rest == "" {
+				return ""
+			}
+			return diBase + "/" + rest + ".png"
+		}
+	}
+	return diBase + "/" + lower + ".png"
+}
+
+func faviconOf(raw string) string {
+	u, err := url.Parse(raw)
+	if err != nil || u.Host == "" {
+		return ""
+	}
+	return u.Scheme + "://" + u.Host + "/favicon.ico"
+}
+
+func arrOf(v any) []any {
+	a, _ := v.([]any)
+	return a
+}
+
+func strOf(m map[string]any, keys ...string) string {
+	for _, k := range keys {
+		if s, ok := m[k].(string); ok && s != "" {
+			return s
+		}
+	}
+	return ""
+}

apps/backend/internal/api/metrics.go

@@ -0,0 +1,75 @@
+package api
+
+import (
+	"fmt"
+	"net/http"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+)
+
+// /api/metrics — Prometheus text exposition over the tables we already have.
+// No registry, no deps: the counts are one-line SQL each.
+
+func promEscape(s string) string {
+	return strings.NewReplacer(`\`, `\\`, `"`, `\"`, "\n", `\n`).Replace(s)
+}
+
+func (s *Server) metrics(c *gin.Context) {
+	var b strings.Builder
+	count := func(q string) int {
+		var n int
+		_ = s.db.QueryRow(q).Scan(&n)
+		return n
+	}
+	gauge := func(name, help string, v int) {
+		fmt.Fprintf(&b, "# HELP %s %s\n# TYPE %s gauge\n%s %d\n", name, help, name, name, v)
+	}
+
+	gauge("dash_monitors_total", "Configured monitors", count(`SELECT COUNT(*) FROM monitors`))
+	gauge("dash_monitors_up", "Monitors currently up", count(`SELECT COUNT(*) FROM monitors WHERE status='up'`))
+	gauge("dash_monitors_down", "Monitors currently down", count(`SELECT COUNT(*) FROM monitors WHERE status='down'`))
+	gauge("dash_domains_total", "Tracked domains", count(`SELECT COUNT(*) FROM domains`))
+	gauge("dash_domains_expired", "Domains past expiry", count(`SELECT COUNT(*) FROM domains WHERE expiry_date IS NOT NULL AND datetime(expiry_date) < datetime('now')`))
+	gauge("dash_domains_expiring_30d", "Domains expiring within 30 days",
+		count(`SELECT COUNT(*) FROM domains WHERE expiry_date IS NOT NULL
+			AND datetime(expiry_date) >= datetime('now')
+			AND datetime(expiry_date) <= datetime('now','+30 days')`))
+	gauge("dash_systems_total", "Registered systems", count(`SELECT COUNT(*) FROM systems`))
+	gauge("dash_systems_up", "Systems currently reporting", count(`SELECT COUNT(*) FROM systems WHERE status='up'`))
+	gauge("dash_systems_down", "Systems gone silent", count(`SELECT COUNT(*) FROM systems WHERE status='down'`))
+	gauge("dash_incidents_open", "Open or acknowledged incidents", count(`SELECT COUNT(*) FROM incidents WHERE status IN ('open','ack')`))
+	gauge("dash_heartbeats_total", "Recorded monitor heartbeats", count(`SELECT COUNT(*) FROM heartbeats`))
+
+	// Per-monitor up/down gauge — label cardinality is user-controlled and small.
+	b.WriteString("# TYPE dash_monitor_up gauge\n")
+	if rows, err := s.db.Query(`SELECT name, status FROM monitors`); err == nil {
+		for rows.Next() {
+			var name, st string
+			if rows.Scan(&name, &st) == nil {
+				v := 0
+				if st == "up" {
+					v = 1
+				}
+				fmt.Fprintf(&b, "dash_monitor_up{name=%q} %d\n", promEscape(name), v)
+			}
+		}
+		rows.Close()
+	}
+	b.WriteString("# TYPE dash_system_up gauge\n")
+	if rows, err := s.db.Query(`SELECT name, status FROM systems`); err == nil {
+		for rows.Next() {
+			var name, st string
+			if rows.Scan(&name, &st) == nil {
+				v := 0
+				if st == "up" {
+					v = 1
+				}
+				fmt.Fprintf(&b, "dash_system_up{name=%q} %d\n", promEscape(name), v)
+			}
+		}
+		rows.Close()
+	}
+
+	c.Data(http.StatusOK, "text/plain; version=0.0.4; charset=utf-8", []byte(b.String()))
+}

apps/backend/internal/api/monitors.go

@@ -0,0 +1,569 @@
+package api
+
+import (
+	"context"
+	"database/sql"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"strconv"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/tdvorak/dash/internal/monitor"
+	"github.com/tdvorak/dash/internal/widget"
+	"go.uber.org/zap"
+)
+
+// ---------- model ----------
+
+const monitorCols = `id, name, type, url, hostname, port, method, headers, body,
+	keyword, keyword_invert, json_query, expected, dns_type, interval_s, timeout_s,
+	retries, active, status, push_token, tags, notes, position, last_check, created_at`
+
+func scanMonitor(row interface{ Scan(...any) error }) (*monitor.Monitor, error) {
+	var m monitor.Monitor
+	var tags string
+	var invert, active int
+	err := row.Scan(&m.ID, &m.Name, &m.Type, &m.URL, &m.Hostname, &m.Port, &m.Method,
+		&m.Headers, &m.Body, &m.Keyword, &invert, &m.JSONQuery, &m.Expected, &m.DNSType,
+		&m.IntervalS, &m.TimeoutS, &m.Retries, &active, &m.Status, &m.PushToken,
+		&tags, &m.Notes, &m.Position, &m.LastCheck, &m.CreatedAt)
+	if err != nil {
+		return nil, err
+	}
+	m.KeywordInvert = invert != 0
+	m.Active = active != 0
+	_ = json.Unmarshal([]byte(tags), &m.Tags)
+	if m.Tags == nil {
+		m.Tags = []string{}
+	}
+	return &m, nil
+}
+
+func (s *Server) loadMonitor(id string) (*monitor.Monitor, error) {
+	row := s.db.QueryRow(`SELECT `+monitorCols+` FROM monitors WHERE id = ?`, id)
+	return scanMonitor(row)
+}
+
+func (s *Server) loadMonitorByToken(token string) (*monitor.Monitor, error) {
+	row := s.db.QueryRow(`SELECT `+monitorCols+` FROM monitors WHERE push_token = ? AND push_token != ''`, token)
+	return scanMonitor(row)
+}
+
+func (s *Server) listMonitors() ([]monitor.Monitor, error) {
+	rows, err := s.db.Query(`SELECT ` + monitorCols + ` FROM monitors ORDER BY position, name`)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var out []monitor.Monitor
+	for rows.Next() {
+		m, err := scanMonitor(rows)
+		if err != nil {
+			return nil, err
+		}
+		out = append(out, *m)
+	}
+	return out, rows.Err()
+}
+
+// ---------- uptime stats ----------
+
+type uptimeStats struct {
+	Up         int     `json:"up"`
+	Down       int     `json:"down"`
+	Uptime24h  float64 `json:"uptime24h"`
+	Uptime30d  float64 `json:"uptime30d"`
+	AvgPing24h int     `json:"avgPing24h"`
+}
+
+func (s *Server) monitorStats(id string) uptimeStats {
+	var st uptimeStats
+	pct := func(hours int) float64 {
+		var up, down int
+		_ = s.db.QueryRow(`SELECT COALESCE(SUM(status='up'),0), COALESCE(SUM(status='down'),0)
+			FROM heartbeats WHERE monitor_id = ? AND checked_at >= datetime('now', ?)`,
+			id, "-"+strconv.Itoa(hours)+" hours").Scan(&up, &down)
+		if up+down == 0 {
+			return 100
+		}
+		return float64(up) / float64(up+down) * 100
+	}
+	st.Uptime24h = pct(24)
+	st.Uptime30d = pct(720)
+	_ = s.db.QueryRow(`SELECT COALESCE(AVG(NULLIF(ping_ms,0)),0) FROM heartbeats
+		WHERE monitor_id = ? AND checked_at >= datetime('now','-24 hours')`, id).Scan(&st.AvgPing24h)
+	_ = s.db.QueryRow(`SELECT COALESCE(SUM(status='up'),0), COALESCE(SUM(status='down'),0)
+		FROM heartbeats WHERE monitor_id = ?`, id).Scan(&st.Up, &st.Down)
+	return st
+}
+
+// monitorView is the API shape: the row plus live uptime stats.
+type monitorView struct {
+	*monitor.Monitor
+	Stats uptimeStats `json:"stats"`
+}
+
+// ---------- handlers ----------
+
+func (s *Server) listMonitorsH(c *gin.Context) {
+	ms, err := s.listMonitors()
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	out := make([]monitorView, 0, len(ms))
+	for i := range ms {
+		out = append(out, monitorView{Monitor: &ms[i], Stats: s.monitorStats(ms[i].ID)})
+	}
+	c.JSON(http.StatusOK, out)
+}
+
+// monitorInput is the create/update payload — all fields optional on PATCH.
+type monitorInput struct {
+	Name          *string  `json:"name"`
+	Type          *string  `json:"type"`
+	URL           *string  `json:"url"`
+	Hostname      *string  `json:"hostname"`
+	Port          *int     `json:"port"`
+	Method        *string  `json:"method"`
+	Headers       *string  `json:"headers"`
+	Body          *string  `json:"body"`
+	Keyword       *string  `json:"keyword"`
+	KeywordInvert *bool    `json:"keywordInvert"`
+	JSONQuery     *string  `json:"jsonQuery"`
+	Expected      *string  `json:"expected"`
+	DNSType       *string  `json:"dnsType"`
+	IntervalS     *int     `json:"intervalS"`
+	TimeoutS      *int     `json:"timeoutS"`
+	Retries       *int     `json:"retries"`
+	Active        *bool    `json:"active"`
+	Tags          []string `json:"tags"`
+	Notes         *string  `json:"notes"`
+}
+
+func validMonitorType(t string) bool {
+	for _, v := range monitor.Types() {
+		if v == t {
+			return true
+		}
+	}
+	return false
+}
+
+func strOr(p *string) string {
+	if p == nil {
+		return ""
+	}
+	return *p
+}
+
+func strOr2(p *string, def string) string {
+	if p == nil || *p == "" {
+		return def
+	}
+	return *p
+}
+
+func intOr(p *int) int {
+	if p == nil {
+		return 0
+	}
+	return *p
+}
+
+func intOr2(p *int, def int) int {
+	if p == nil || *p <= 0 {
+		return def
+	}
+	return *p
+}
+
+func boolOr(p *bool) bool { return p != nil && *p }
+
+func boolOr2(p *bool, def bool) bool {
+	if p == nil {
+		return def
+	}
+	return *p
+}
+
+func (s *Server) createMonitor(c *gin.Context) {
+	var in monitorInput
+	if err := c.ShouldBindJSON(&in); err != nil || in.Name == nil || in.Type == nil {
+		fail(c, http.StatusBadRequest, "name and type required")
+		return
+	}
+	if !validMonitorType(*in.Type) {
+		fail(c, http.StatusBadRequest, "invalid type")
+		return
+	}
+	id := newID("m")
+	token := ""
+	if *in.Type == "push" {
+		token = newID("push")
+	}
+	tags, _ := json.Marshal(in.Tags)
+	if in.Tags == nil {
+		tags = []byte("[]")
+	}
+	_, err := s.db.Exec(`INSERT INTO monitors
+		(id, name, type, url, hostname, port, method, headers, body, keyword,
+		 keyword_invert, json_query, expected, dns_type, interval_s, timeout_s,
+		 retries, active, push_token, tags, notes, position)
+		VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)`,
+		id, *in.Name, *in.Type, strOr(in.URL), strOr(in.Hostname), intOr(in.Port),
+		strOr2(in.Method, "GET"), strOr2(in.Headers, "{}"), strOr(in.Body),
+		strOr(in.Keyword), boolOr(in.KeywordInvert), strOr(in.JSONQuery),
+		strOr(in.Expected), strOr2(in.DNSType, "A"), intOr2(in.IntervalS, 60),
+		intOr2(in.TimeoutS, 10), intOr(in.Retries), boolOr2(in.Active, true),
+		token, string(tags), strOr(in.Notes), float64(time.Now().UnixNano())/1e9)
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	m, err := s.loadMonitor(id)
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	c.JSON(http.StatusCreated, monitorView{Monitor: m, Stats: s.monitorStats(id)})
+}
+
+func (s *Server) getMonitor(c *gin.Context) {
+	m, err := s.loadMonitor(c.Param("id"))
+	if notFound(err) {
+		fail(c, http.StatusNotFound, "monitor not found")
+		return
+	}
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	c.JSON(http.StatusOK, monitorView{Monitor: m, Stats: s.monitorStats(m.ID)})
+}
+
+// patchMonitor applies a sparse update; `active` flips pause/resume.
+func (s *Server) patchMonitor(c *gin.Context) {
+	id := c.Param("id")
+	if _, err := s.loadMonitor(id); notFound(err) {
+		fail(c, http.StatusNotFound, "monitor not found")
+		return
+	}
+	var in monitorInput
+	if err := c.ShouldBindJSON(&in); err != nil {
+		fail(c, http.StatusBadRequest, "invalid body")
+		return
+	}
+	if in.Type != nil && !validMonitorType(*in.Type) {
+		fail(c, http.StatusBadRequest, "invalid type")
+		return
+	}
+	setStr := func(col string, p *string) {
+		if p != nil {
+			_, _ = s.db.Exec(`UPDATE monitors SET `+col+` = ? WHERE id = ?`, *p, id)
+		}
+	}
+	setStr("name", in.Name)
+	setStr("type", in.Type)
+	setStr("url", in.URL)
+	setStr("hostname", in.Hostname)
+	setStr("method", in.Method)
+	setStr("headers", in.Headers)
+	setStr("body", in.Body)
+	setStr("keyword", in.Keyword)
+	setStr("json_query", in.JSONQuery)
+	setStr("expected", in.Expected)
+	setStr("dns_type", in.DNSType)
+	setStr("notes", in.Notes)
+	setInt := func(col string, p *int) {
+		if p != nil {
+			_, _ = s.db.Exec(`UPDATE monitors SET `+col+` = ? WHERE id = ?`, *p, id)
+		}
+	}
+	setInt("port", in.Port)
+	setInt("interval_s", in.IntervalS)
+	setInt("timeout_s", in.TimeoutS)
+	setInt("retries", in.Retries)
+	if in.KeywordInvert != nil {
+		_, _ = s.db.Exec(`UPDATE monitors SET keyword_invert = ? WHERE id = ?`, *in.KeywordInvert, id)
+	}
+	if in.Tags != nil {
+		tags, _ := json.Marshal(in.Tags)
+		_, _ = s.db.Exec(`UPDATE monitors SET tags = ? WHERE id = ?`, string(tags), id)
+	}
+	if in.Active != nil {
+		// pause/resume flips the stored status back to pending for a fresh probe
+		status := "pending"
+		if !*in.Active {
+			status = "paused"
+		}
+		_, _ = s.db.Exec(`UPDATE monitors SET active = ?, status = ? WHERE id = ?`, *in.Active, status, id)
+	}
+	m, err := s.loadMonitor(id)
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	c.JSON(http.StatusOK, monitorView{Monitor: m, Stats: s.monitorStats(id)})
+}
+
+func (s *Server) deleteMonitor(c *gin.Context) {
+	res, err := s.db.Exec(`DELETE FROM monitors WHERE id = ?`, c.Param("id"))
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	if n, _ := res.RowsAffected(); n == 0 {
+		fail(c, http.StatusNotFound, "monitor not found")
+		return
+	}
+	c.Status(http.StatusNoContent)
+}
+
+// heartbeats returns the recent check history for charts/logs.
+func (s *Server) monitorHeartbeats(c *gin.Context) {
+	hours, _ := strconv.Atoi(c.DefaultQuery("hours", "24"))
+	if hours <= 0 || hours > 24*30 {
+		hours = 24
+	}
+	rows, err := s.db.Query(`SELECT id, status, ping_ms, msg, cert_expiry, checked_at
+		FROM heartbeats WHERE monitor_id = ? AND checked_at >= datetime('now', ?)
+		ORDER BY checked_at`, c.Param("id"), "-"+strconv.Itoa(hours)+" hours")
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	defer rows.Close()
+	type hb struct {
+		ID         int    `json:"id"`
+		Status     string `json:"status"`
+		PingMs     int    `json:"pingMs"`
+		Msg        string `json:"msg"`
+		CertExpiry int    `json:"certExpiry"`
+		CheckedAt  string `json:"checkedAt"`
+	}
+	out := []hb{}
+	for rows.Next() {
+		var h hb
+		if err := rows.Scan(&h.ID, &h.Status, &h.PingMs, &h.Msg, &h.CertExpiry, &h.CheckedAt); err != nil {
+			fail(c, http.StatusInternalServerError, err.Error())
+			return
+		}
+		out = append(out, h)
+	}
+	c.JSON(http.StatusOK, out)
+}
+
+// checkNow runs one check synchronously and returns the refreshed view.
+func (s *Server) checkNow(c *gin.Context) {
+	m, err := s.loadMonitor(c.Param("id"))
+	if notFound(err) {
+		fail(c, http.StatusNotFound, "monitor not found")
+		return
+	}
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	s.runCheck(m)
+	m, err = s.loadMonitor(m.ID)
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	c.JSON(http.StatusOK, monitorView{Monitor: m, Stats: s.monitorStats(m.ID)})
+}
+
+// pushIngest is the push-monitor endpoint: any hit records an up heartbeat.
+// ?msg= and ?ping= are optional annotations.
+func (s *Server) pushIngest(c *gin.Context) {
+	m, err := s.loadMonitorByToken(c.Param("token"))
+	if err != nil {
+		fail(c, http.StatusNotFound, "unknown push token")
+		return
+	}
+	msg := c.Query("msg")
+	ping, _ := strconv.Atoi(c.Query("ping"))
+	s.writeHeartbeat(m, &monitor.Result{Up: true, PingMs: ping, Msg: msg, CertExpiry: -1})
+	_, _ = s.db.Exec(`UPDATE monitors SET status = 'up', last_check = strftime('%Y-%m-%dT%H:%M:%fZ','now') WHERE id = ?`, m.ID)
+	c.JSON(http.StatusOK, gin.H{"status": "ok"})
+}
+
+// ---------- scheduler ----------
+
+// runScheduler sweeps for due monitors every tick; each check runs in a
+// bounded worker. Push monitors go stale -> down when silent too long.
+func (s *Server) runScheduler(done <-chan struct{}) {
+	tick := time.NewTicker(10 * time.Second)
+	prune := time.NewTicker(time.Hour)
+	defer tick.Stop()
+	defer prune.Stop()
+	for {
+		select {
+		case <-done:
+			return
+		case <-tick.C:
+			s.sweep()
+		case <-prune.C:
+			if _, err := s.db.Exec(`DELETE FROM heartbeats WHERE checked_at < datetime('now','-30 days')`); err != nil {
+				s.log.Error("heartbeat prune", zap.Error(err))
+			}
+			// System samples are high-rate; a week of raw ticks is enough.
+			if _, err := s.db.Exec(`DELETE FROM system_stats WHERE ts < datetime('now','-7 days')`); err != nil {
+				s.log.Error("system stats prune", zap.Error(err))
+			}
+		}
+	}
+}
+
+var checkSem = make(chan struct{}, 8)
+
+func (s *Server) sweep() {
+	rows, err := s.db.Query(`SELECT ` + monitorCols + ` FROM monitors
+		WHERE active = 1 AND type != 'push'
+		AND (last_check IS NULL OR datetime(last_check, '+' || interval_s || ' seconds') <= datetime('now'))`)
+	if err != nil {
+		s.log.Error("monitor sweep", zap.Error(err))
+		return
+	}
+	var due []monitor.Monitor
+	for rows.Next() {
+		if m, err := scanMonitor(rows); err == nil {
+			due = append(due, *m)
+		}
+	}
+	rows.Close()
+
+	for i := range due {
+		m := &due[i]
+		checkSem <- struct{}{}
+		go func() {
+			defer func() { <-checkSem }()
+			s.runCheck(m)
+		}()
+	}
+
+	// Push monitors: mark down when no push arrived within 2x interval.
+	if _, err := s.db.Exec(`UPDATE monitors SET status = 'down',
+		last_check = strftime('%Y-%m-%dT%H:%M:%fZ','now')
+		WHERE type = 'push' AND active = 1
+		AND last_check IS NOT NULL
+		AND datetime(last_check, '+' || (2 * interval_s) || ' seconds') <= datetime('now')
+		AND status != 'down'`); err != nil {
+		s.log.Error("push stale sweep", zap.Error(err))
+	}
+
+	s.sweepDomains()
+	s.sweepSystems()
+}
+
+// runCheck executes one monitor check (with retries) and persists the result.
+func (s *Server) runCheck(m *monitor.Monitor) *monitor.Result {
+	var res *monitor.Result
+	for attempt := 0; attempt <= m.Retries; attempt++ {
+		res = monitor.Check(context.Background(), m)
+		if res.Up || attempt == m.Retries {
+			break
+		}
+		time.Sleep(2 * time.Second)
+	}
+	s.writeHeartbeat(m, res)
+	prev := m.Status
+	next := "down"
+	if res.Up {
+		next = "up"
+	}
+	if _, err := s.db.Exec(`UPDATE monitors SET status = ?, last_check = strftime('%Y-%m-%dT%H:%M:%fZ','now') WHERE id = ?`,
+		next, m.ID); err != nil {
+		s.log.Error("monitor update", zap.Error(err))
+	}
+	if prev != next && prev != "pending" {
+		s.onMonitorTransition(m, prev, next)
+	}
+	return res
+}
+
+func (s *Server) writeHeartbeat(m *monitor.Monitor, res *monitor.Result) {
+	status := "down"
+	if res.Up {
+		status = "up"
+	}
+	if _, err := s.db.Exec(`INSERT INTO heartbeats (monitor_id, status, ping_ms, msg, cert_expiry)
+		VALUES (?,?,?,?,?)`, m.ID, status, res.PingMs, truncate(res.Msg, 300), res.CertExpiry); err != nil {
+		s.log.Error("heartbeat write", zap.Error(err))
+	}
+}
+
+// onMonitorTransition fires on real state flips (pending excluded upstream)
+// — the notification + auto-incident seam for up/down events. An active
+// maintenance window covering this monitor suppresses both.
+func (s *Server) onMonitorTransition(m *monitor.Monitor, prev, next string) {
+	s.log.Info("monitor transition",
+		zap.String("monitor", m.Name), zap.String("from", prev), zap.String("to", next))
+	if s.inMaintenance(m.ID) {
+		return
+	}
+	s.autoIncident(m.ID, m.Name, next)
+	target := m.URL
+	if target == "" {
+		target = m.Hostname
+	}
+	s.notify("monitor."+next, m.Name,
+		fmt.Sprintf("Monitor %q is %s (%s)", m.Name, next, target))
+}
+
+func truncate(s string, n int) string {
+	if len(s) > n {
+		return s[:n]
+	}
+	return s
+}
+
+// ---------- widget fetcher ----------
+
+// monitorWidget serves board tiles bound to a monitor via config.monitorId.
+type monitorWidget struct{ db *sql.DB }
+
+func (w *monitorWidget) Meta() widget.Type {
+	return widget.Type{
+		Type: "monitor", Name: "Monitor",
+		Description: "Live status of an uptime monitor",
+		Fields: []widget.Field{
+			{Key: "monitorId", Label: "Monitor", Required: true},
+		},
+	}
+}
+
+func (w *monitorWidget) Fetch(_ context.Context, cfg json.RawMessage) (any, error) {
+	var c struct {
+		MonitorID string `json:"monitorId"`
+	}
+	if err := json.Unmarshal(cfg, &c); err != nil || c.MonitorID == "" {
+		return nil, errors.New("config.monitorId required")
+	}
+	row := w.db.QueryRow(`SELECT `+monitorCols+` FROM monitors WHERE id = ?`, c.MonitorID)
+	m, err := scanMonitor(row)
+	if err != nil {
+		return nil, errors.New("monitor not found")
+	}
+	var up, down int
+	var avgPing float64
+	_ = w.db.QueryRow(`SELECT COALESCE(SUM(status='up'),0), COALESCE(SUM(status='down'),0),
+		COALESCE(AVG(NULLIF(ping_ms,0)),0)
+		FROM heartbeats WHERE monitor_id = ? AND checked_at >= datetime('now','-24 hours')`,
+		m.ID).Scan(&up, &down, &avgPing)
+	uptime := 100.0
+	if up+down > 0 {
+		uptime = float64(up) / float64(up+down) * 100
+	}
+	return map[string]any{
+		"name":     m.Name,
+		"status":   m.Status,
+		"uptime24": uptime,
+		"ping":     int(avgPing),
+		"type":     m.Type,
+	}, nil
+}

apps/backend/internal/api/notify.go

@@ -0,0 +1,96 @@
+package api
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"net/http"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"go.uber.org/zap"
+)
+
+// Notifications: one outbound webhook, configured via the notify_webhook
+// settings key. Payload carries event/name/text/content/message so the same
+// POST satisfies Slack ({text}), Discord ({content}), ntfy, and generic
+// receivers. SMTP and per-service channels are deliberately out of scope —
+// a webhook bridge (e.g. ntfy, Gotify, shoutrrr) covers them.
+
+type notifyPayload struct {
+	Event   string `json:"event"`
+	Name    string `json:"name"`
+	Text    string `json:"text"`    // Slack-style
+	Content string `json:"content"` // Discord-style
+	Message string `json:"message"` // ntfy/generic
+	At      string `json:"at"`
+}
+
+func (s *Server) webhookURL() string {
+	var raw string
+	if err := s.db.QueryRow(`SELECT value FROM settings WHERE key = 'notify_webhook'`).Scan(&raw); err != nil {
+		return ""
+	}
+	// Settings values are stored as JSON — unwrap the quoted string.
+	var u string
+	if err := json.Unmarshal([]byte(raw), &u); err != nil {
+		return ""
+	}
+	return u
+}
+
+// notify fires the webhook asynchronously; delivery failures are logged, never fatal.
+func (s *Server) notify(event, name, msg string) {
+	url := s.webhookURL()
+	if url == "" {
+		return
+	}
+	if u := parseHTTPURL(url); u == "" {
+		s.log.Warn("notify_webhook is not an http(s) URL", zap.String("event", event))
+		return
+	}
+	p := notifyPayload{Event: event, Name: name, Text: msg, Content: msg, Message: msg,
+		At: time.Now().UTC().Format(time.RFC3339)}
+	go s.deliver(url, p)
+}
+
+func (s *Server) deliver(url string, p notifyPayload) {
+	body, _ := json.Marshal(p)
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewReader(body))
+	if err != nil {
+		return
+	}
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Title", p.Text)  // ntfy reads the title header
+	req.Header.Set("X-Dash-Event", p.Event)
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		s.log.Warn("webhook delivery failed", zap.String("event", p.Event), zap.Error(err))
+		return
+	}
+	resp.Body.Close()
+	if resp.StatusCode >= 400 {
+		s.log.Warn("webhook rejected", zap.String("event", p.Event), zap.Int("status", resp.StatusCode))
+	}
+}
+
+// parseHTTPURL enforces http/https on the configured webhook — same SSRF
+// posture as monitor targets (user-configured, but no file:// or friends).
+func parseHTTPURL(raw string) string {
+	if !validURL(raw) {
+		return ""
+	}
+	return raw
+}
+
+// notifyTest lets the settings UI verify the configured webhook.
+func (s *Server) notifyTest(c *gin.Context) {
+	if s.webhookURL() == "" {
+		fail(c, http.StatusBadRequest, "notify_webhook not configured")
+		return
+	}
+	s.notify("test", "dash", "Dash test notification")
+	c.JSON(http.StatusOK, gin.H{"status": "sent"})
+}

apps/backend/internal/api/ops.go

@@ -0,0 +1,717 @@
+package api
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"go.uber.org/zap"
+)
+
+// ---------- incidents ----------
+
+type Incident struct {
+	ID        string           `json:"id"`
+	Title     string           `json:"title"`
+	Severity  string           `json:"severity"`
+	Status    string           `json:"status"`
+	MonitorID *string          `json:"monitorId"`
+	Updates   []IncidentUpdate `json:"updates,omitempty"`
+	CreatedAt string           `json:"createdAt"`
+	UpdatedAt string           `json:"updatedAt"`
+}
+
+type IncidentUpdate struct {
+	ID        int64  `json:"id"`
+	Status    string `json:"status"`
+	Message   string `json:"message"`
+	At        string `json:"at"`
+}
+
+var incidentStatuses = map[string]bool{"open": true, "ack": true, "resolved": true, "closed": true}
+var incidentSeverities = map[string]bool{"minor": true, "major": true, "critical": true}
+
+func scanIncident(row interface{ Scan(...any) error }) (*Incident, error) {
+	var in Incident
+	err := row.Scan(&in.ID, &in.Title, &in.Severity, &in.Status, &in.MonitorID,
+		&in.CreatedAt, &in.UpdatedAt)
+	return &in, err
+}
+
+const incidentCols = `id, title, severity, status, monitor_id, created_at, updated_at`
+
+func (s *Server) loadIncident(id string) (*Incident, error) {
+	return scanIncident(s.db.QueryRow(`SELECT `+incidentCols+` FROM incidents WHERE id = ?`, id))
+}
+
+func (s *Server) incidentUpdates(id string) []IncidentUpdate {
+	rows, err := s.db.Query(`SELECT id, status, message, at FROM incident_updates
+		WHERE incident_id = ? ORDER BY at`, id)
+	if err != nil {
+		return nil
+	}
+	defer rows.Close()
+	out := []IncidentUpdate{}
+	for rows.Next() {
+		var u IncidentUpdate
+		if rows.Scan(&u.ID, &u.Status, &u.Message, &u.At) == nil {
+			out = append(out, u)
+		}
+	}
+	return out
+}
+
+func (s *Server) listIncidents(c *gin.Context) {
+	openOnly := c.Query("status") == "open"
+	q := `SELECT ` + incidentCols + ` FROM incidents`
+	if openOnly {
+		q += ` WHERE status IN ('open','ack')`
+	}
+	q += ` ORDER BY created_at DESC LIMIT 200`
+	rows, err := s.db.Query(q)
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	defer rows.Close()
+	out := []Incident{}
+	for rows.Next() {
+		in, err := scanIncident(rows)
+		if err != nil {
+			fail(c, http.StatusInternalServerError, err.Error())
+			return
+		}
+		in.Updates = s.incidentUpdates(in.ID)
+		out = append(out, *in)
+	}
+	c.JSON(http.StatusOK, out)
+}
+
+type incidentInput struct {
+	Title     *string `json:"title"`
+	Severity  *string `json:"severity"`
+	Status    *string `json:"status"`
+	MonitorID *string `json:"monitorId"`
+	Message   *string `json:"message"` // initial update body / transition note
+}
+
+func (s *Server) createIncident(c *gin.Context) {
+	var in incidentInput
+	if err := c.ShouldBindJSON(&in); err != nil || in.Title == nil || *in.Title == "" {
+		fail(c, http.StatusBadRequest, "title required")
+		return
+	}
+	sev := strOr2(in.Severity, "major")
+	st := strOr2(in.Status, "open")
+	if !incidentSeverities[sev] || !incidentStatuses[st] {
+		fail(c, http.StatusBadRequest, "invalid severity or status")
+		return
+	}
+	id := newID("inc")
+	_, err := s.db.Exec(`INSERT INTO incidents (id, title, severity, status, monitor_id)
+		VALUES (?,?,?,?,?)`, id, *in.Title, sev, st, in.MonitorID)
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	if msg := strOr(in.Message); msg != "" {
+		_, _ = s.db.Exec(`INSERT INTO incident_updates (incident_id, status, message) VALUES (?,?,?)`,
+			id, st, msg)
+	}
+	inc, err := s.loadIncident(id)
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	inc.Updates = s.incidentUpdates(id)
+	c.JSON(http.StatusCreated, inc)
+}
+
+// patchIncident moves status/severity/title; a status change also appends an
+// incident_updates row so the timeline stays honest.
+func (s *Server) patchIncident(c *gin.Context) {
+	id := c.Param("id")
+	cur, err := s.loadIncident(id)
+	if notFound(err) {
+		fail(c, http.StatusNotFound, "incident not found")
+		return
+	}
+	var in incidentInput
+	if err := c.ShouldBindJSON(&in); err != nil {
+		fail(c, http.StatusBadRequest, "invalid body")
+		return
+	}
+	if in.Severity != nil && !incidentSeverities[*in.Severity] {
+		fail(c, http.StatusBadRequest, "invalid severity")
+		return
+	}
+	if in.Status != nil && !incidentStatuses[*in.Status] {
+		fail(c, http.StatusBadRequest, "invalid status")
+		return
+	}
+	set := func(col string, p *string) {
+		if p != nil {
+			_, _ = s.db.Exec(`UPDATE incidents SET `+col+` = ?, updated_at = strftime('%Y-%m-%dT%H:%M:%fZ','now') WHERE id = ?`, *p, id)
+		}
+	}
+	set("title", in.Title)
+	set("severity", in.Severity)
+	set("status", in.Status)
+	if in.Status != nil && *in.Status != cur.Status {
+		_, _ = s.db.Exec(`INSERT INTO incident_updates (incident_id, status, message) VALUES (?,?,?)`,
+			id, *in.Status, strOr(in.Message))
+	}
+	inc, err := s.loadIncident(id)
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	inc.Updates = s.incidentUpdates(id)
+	c.JSON(http.StatusOK, inc)
+}
+
+func (s *Server) addIncidentUpdate(c *gin.Context) {
+	id := c.Param("id")
+	if _, err := s.loadIncident(id); notFound(err) {
+		fail(c, http.StatusNotFound, "incident not found")
+		return
+	}
+	var in incidentInput
+	if err := c.ShouldBindJSON(&in); err != nil {
+		fail(c, http.StatusBadRequest, "invalid body")
+		return
+	}
+	st := strOr2(in.Status, "")
+	if st != "" && !incidentStatuses[st] {
+		fail(c, http.StatusBadRequest, "invalid status")
+		return
+	}
+	if st == "" {
+		st = "note"
+	}
+	_, err := s.db.Exec(`INSERT INTO incident_updates (incident_id, status, message) VALUES (?,?,?)`,
+		id, st, strOr(in.Message))
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	if in.Status != nil {
+		_, _ = s.db.Exec(`UPDATE incidents SET status = ?, updated_at = strftime('%Y-%m-%dT%H:%M:%fZ','now') WHERE id = ?`, *in.Status, id)
+	}
+	inc, _ := s.loadIncident(id)
+	inc.Updates = s.incidentUpdates(id)
+	c.JSON(http.StatusOK, inc)
+}
+
+func (s *Server) deleteIncident(c *gin.Context) {
+	res, err := s.db.Exec(`DELETE FROM incidents WHERE id = ?`, c.Param("id"))
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	if n, _ := res.RowsAffected(); n == 0 {
+		fail(c, http.StatusNotFound, "incident not found")
+		return
+	}
+	c.Status(http.StatusNoContent)
+}
+
+// ---------- maintenance windows ----------
+
+type MaintWindow struct {
+	ID         string   `json:"id"`
+	Title      string   `json:"title"`
+	StartsAt   string   `json:"startsAt"`
+	EndsAt     string   `json:"endsAt"`
+	MonitorIDs []string `json:"monitorIds"` // empty = all monitors
+	Active     bool     `json:"active"`
+	CreatedAt  string   `json:"createdAt"`
+}
+
+func scanWindow(row interface{ Scan(...any) error }) (*MaintWindow, error) {
+	var w MaintWindow
+	var ids string
+	err := row.Scan(&w.ID, &w.Title, &w.StartsAt, &w.EndsAt, &ids, &w.CreatedAt)
+	if err != nil {
+		return nil, err
+	}
+	_ = json.Unmarshal([]byte(ids), &w.MonitorIDs)
+	if w.MonitorIDs == nil {
+		w.MonitorIDs = []string{}
+	}
+	now := time.Now().UTC()
+	if st, err1 := time.Parse(time.RFC3339Nano, w.StartsAt); err1 == nil {
+		if en, err2 := time.Parse(time.RFC3339Nano, w.EndsAt); err2 == nil {
+			w.Active = !now.Before(st) && now.Before(en)
+		}
+	}
+	return &w, nil
+}
+
+const windowCols = `id, title, starts_at, ends_at, monitor_ids, created_at`
+
+func (s *Server) listWindows(c *gin.Context) {
+	rows, err := s.db.Query(`SELECT ` + windowCols + ` FROM maintenance_windows ORDER BY starts_at DESC LIMIT 100`)
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	defer rows.Close()
+	out := []MaintWindow{}
+	for rows.Next() {
+		w, err := scanWindow(rows)
+		if err != nil {
+			fail(c, http.StatusInternalServerError, err.Error())
+			return
+		}
+		out = append(out, *w)
+	}
+	c.JSON(http.StatusOK, out)
+}
+
+type windowInput struct {
+	Title      *string  `json:"title"`
+	StartsAt   *string  `json:"startsAt"`
+	EndsAt     *string  `json:"endsAt"`
+	MonitorIDs []string `json:"monitorIds"`
+}
+
+func validWindow(in *windowInput) bool {
+	if in.Title == nil || in.StartsAt == nil || in.EndsAt == nil || *in.Title == "" {
+		return false
+	}
+	st, err1 := time.Parse(time.RFC3339Nano, *in.StartsAt)
+	en, err2 := time.Parse(time.RFC3339Nano, *in.EndsAt)
+	return err1 == nil && err2 == nil && en.After(st)
+}
+
+func (s *Server) createWindow(c *gin.Context) {
+	var in windowInput
+	if err := c.ShouldBindJSON(&in); err != nil || !validWindow(&in) {
+		fail(c, http.StatusBadRequest, "title, startsAt, endsAt (RFC3339, end after start) required")
+		return
+	}
+	ids, _ := json.Marshal(in.MonitorIDs)
+	if in.MonitorIDs == nil {
+		ids = []byte("[]")
+	}
+	id := newID("mw")
+	if _, err := s.db.Exec(`INSERT INTO maintenance_windows (id, title, starts_at, ends_at, monitor_ids)
+		VALUES (?,?,?,?,?)`, id, *in.Title, *in.StartsAt, *in.EndsAt, string(ids)); err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	w, err := scanWindow(s.db.QueryRow(`SELECT `+windowCols+` FROM maintenance_windows WHERE id = ?`, id))
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	c.JSON(http.StatusCreated, w)
+}
+
+func (s *Server) deleteWindow(c *gin.Context) {
+	res, err := s.db.Exec(`DELETE FROM maintenance_windows WHERE id = ?`, c.Param("id"))
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	if n, _ := res.RowsAffected(); n == 0 {
+		fail(c, http.StatusNotFound, "window not found")
+		return
+	}
+	c.Status(http.StatusNoContent)
+}
+
+// inMaintenance reports whether a monitor is covered by an active window —
+// suppresses auto-incidents and transition alerts.
+func (s *Server) inMaintenance(monitorID string) bool {
+	rows, err := s.db.Query(`SELECT monitor_ids FROM maintenance_windows
+		WHERE datetime(starts_at) <= datetime('now') AND datetime(ends_at) > datetime('now')`)
+	if err != nil {
+		return false
+	}
+	defer rows.Close()
+	for rows.Next() {
+		var raw string
+		if rows.Scan(&raw) != nil {
+			continue
+		}
+		var ids []string
+		_ = json.Unmarshal([]byte(raw), &ids)
+		if len(ids) == 0 {
+			return true
+		}
+		for _, id := range ids {
+			if id == monitorID {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+// ---------- status pages ----------
+
+type StatusPage struct {
+	ID          string   `json:"id"`
+	Slug        string   `json:"slug"`
+	Title       string   `json:"title"`
+	Description string   `json:"description"`
+	MonitorIDs  []string `json:"monitorIds"`
+	SystemIDs   []string `json:"systemIds"`
+	CreatedAt   string   `json:"createdAt"`
+}
+
+func scanStatusPage(row interface{ Scan(...any) error }) (*StatusPage, error) {
+	var p StatusPage
+	var mids, sids string
+	err := row.Scan(&p.ID, &p.Slug, &p.Title, &p.Description, &mids, &sids, &p.CreatedAt)
+	if err != nil {
+		return nil, err
+	}
+	_ = json.Unmarshal([]byte(mids), &p.MonitorIDs)
+	_ = json.Unmarshal([]byte(sids), &p.SystemIDs)
+	if p.MonitorIDs == nil {
+		p.MonitorIDs = []string{}
+	}
+	if p.SystemIDs == nil {
+		p.SystemIDs = []string{}
+	}
+	return &p, nil
+}
+
+const statusPageCols = `id, slug, title, description, monitor_ids, system_ids, created_at`
+
+func (s *Server) listStatusPages(c *gin.Context) {
+	rows, err := s.db.Query(`SELECT ` + statusPageCols + ` FROM status_pages ORDER BY title`)
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	defer rows.Close()
+	out := []StatusPage{}
+	for rows.Next() {
+		p, err := scanStatusPage(rows)
+		if err != nil {
+			fail(c, http.StatusInternalServerError, err.Error())
+			return
+		}
+		out = append(out, *p)
+	}
+	c.JSON(http.StatusOK, out)
+}
+
+type statusPageInput struct {
+	Slug        *string  `json:"slug"`
+	Title       *string  `json:"title"`
+	Description *string  `json:"description"`
+	MonitorIDs  []string `json:"monitorIds"`
+	SystemIDs   []string `json:"systemIds"`
+}
+
+// validSlug keeps the public URL safe: lowercase letters, digits, dashes.
+func validSlug(slug string) bool {
+	if slug == "" || len(slug) > 64 {
+		return false
+	}
+	for _, r := range slug {
+		if !(r >= 'a' && r <= 'z' || r >= '0' && r <= '9' || r == '-') {
+			return false
+		}
+	}
+	return true
+}
+
+func (s *Server) createStatusPage(c *gin.Context) {
+	var in statusPageInput
+	if err := c.ShouldBindJSON(&in); err != nil || in.Title == nil || *in.Title == "" {
+		fail(c, http.StatusBadRequest, "title required")
+		return
+	}
+	slug := strOr(in.Slug)
+	if slug == "" {
+		slug = slugify(*in.Title)
+	}
+	if !validSlug(slug) {
+		fail(c, http.StatusBadRequest, "invalid slug")
+		return
+	}
+	mids, _ := json.Marshal(in.MonitorIDs)
+	sids, _ := json.Marshal(in.SystemIDs)
+	id := newID("sp")
+	_, err := s.db.Exec(`INSERT INTO status_pages (id, slug, title, description, monitor_ids, system_ids)
+		VALUES (?,?,?,?,?,?)`, id, slug, *in.Title, strOr(in.Description), string(mids), string(sids))
+	if err != nil {
+		if strings.Contains(err.Error(), "UNIQUE") {
+			fail(c, http.StatusConflict, "slug already in use")
+			return
+		}
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	p, err := scanStatusPage(s.db.QueryRow(`SELECT `+statusPageCols+` FROM status_pages WHERE id = ?`, id))
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	c.JSON(http.StatusCreated, p)
+}
+
+func (s *Server) patchStatusPage(c *gin.Context) {
+	id := c.Param("id")
+	if _, err := scanStatusPage(s.db.QueryRow(
+		`SELECT `+statusPageCols+` FROM status_pages WHERE id = ?`, id)); notFound(err) {
+		fail(c, http.StatusNotFound, "status page not found")
+		return
+	}
+	var in statusPageInput
+	if err := c.ShouldBindJSON(&in); err != nil {
+		fail(c, http.StatusBadRequest, "invalid body")
+		return
+	}
+	if in.Slug != nil {
+		if !validSlug(*in.Slug) {
+			fail(c, http.StatusBadRequest, "invalid slug")
+			return
+		}
+		_, _ = s.db.Exec(`UPDATE status_pages SET slug = ? WHERE id = ?`, *in.Slug, id)
+	}
+	if in.Title != nil && *in.Title != "" {
+		_, _ = s.db.Exec(`UPDATE status_pages SET title = ? WHERE id = ?`, *in.Title, id)
+	}
+	if in.Description != nil {
+		_, _ = s.db.Exec(`UPDATE status_pages SET description = ? WHERE id = ?`, *in.Description, id)
+	}
+	if in.MonitorIDs != nil {
+		b, _ := json.Marshal(in.MonitorIDs)
+		_, _ = s.db.Exec(`UPDATE status_pages SET monitor_ids = ? WHERE id = ?`, string(b), id)
+	}
+	if in.SystemIDs != nil {
+		b, _ := json.Marshal(in.SystemIDs)
+		_, _ = s.db.Exec(`UPDATE status_pages SET system_ids = ? WHERE id = ?`, string(b), id)
+	}
+	p, err := scanStatusPage(s.db.QueryRow(`SELECT `+statusPageCols+` FROM status_pages WHERE id = ?`, id))
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	c.JSON(http.StatusOK, p)
+}
+
+func (s *Server) deleteStatusPage(c *gin.Context) {
+	res, err := s.db.Exec(`DELETE FROM status_pages WHERE id = ?`, c.Param("id"))
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	if n, _ := res.RowsAffected(); n == 0 {
+		fail(c, http.StatusNotFound, "status page not found")
+		return
+	}
+	c.Status(http.StatusNoContent)
+}
+
+func slugify(s string) string {
+	var b strings.Builder
+	for _, r := range strings.ToLower(s) {
+		switch {
+		case r >= 'a' && r <= 'z' || r >= '0' && r <= '9':
+			b.WriteRune(r)
+		case r == ' ' || r == '-' || r == '_':
+			b.WriteRune('-')
+		}
+	}
+	return strings.Trim(b.String(), "-")
+}
+
+// ---------- public status ----------
+
+// publicStatus renders one status page's live view: monitors with uptime,
+// systems with status, open incidents, active/upcoming maintenance.
+func (s *Server) publicStatus(c *gin.Context) {
+	p, err := scanStatusPage(s.db.QueryRow(
+		`SELECT `+statusPageCols+` FROM status_pages WHERE slug = ?`, c.Param("slug")))
+	if notFound(err) {
+		fail(c, http.StatusNotFound, "status page not found")
+		return
+	}
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+
+	pick := func(ids []string) (string, []any) {
+		if len(ids) == 0 {
+			return "", nil
+		}
+		marks := strings.TrimSuffix(strings.Repeat("?,", len(ids)), ",")
+		args := make([]any, len(ids))
+		for i, id := range ids {
+			args[i] = id
+		}
+		return marks, args
+	}
+
+	type monStatus struct {
+		ID        string  `json:"id"`
+		Name      string  `json:"name"`
+		Status    string  `json:"status"` // up|down|pending|maintenance
+		Uptime24h float64 `json:"uptime24h"`
+	}
+	mons := []monStatus{}
+	mq := `SELECT id, name, status FROM monitors WHERE active = 1`
+	marks, args := pick(p.MonitorIDs)
+	if marks != "" {
+		mq += ` AND id IN (` + marks + `)`
+	}
+	mq += ` ORDER BY name`
+	if rows, err := s.db.Query(mq, args...); err == nil {
+		for rows.Next() {
+			var m monStatus
+			if rows.Scan(&m.ID, &m.Name, &m.Status) == nil {
+				if s.inMaintenance(m.ID) {
+					m.Status = "maintenance"
+				}
+				m.Uptime24h = s.monitorStats(m.ID).Uptime24h
+				mons = append(mons, m)
+			}
+		}
+		rows.Close()
+	}
+
+	type sysStatus struct {
+		ID     string `json:"id"`
+		Name   string `json:"name"`
+		Status string `json:"status"`
+	}
+	systems := []sysStatus{}
+	sq := `SELECT id, name, status FROM systems`
+	marks, args = pick(p.SystemIDs)
+	if marks != "" {
+		sq += ` WHERE id IN (` + marks + `)`
+	}
+	sq += ` ORDER BY name`
+	if rows, err := s.db.Query(sq, args...); err == nil {
+		for rows.Next() {
+			var sm sysStatus
+			if rows.Scan(&sm.ID, &sm.Name, &sm.Status) == nil {
+				systems = append(systems, sm)
+			}
+		}
+		rows.Close()
+	}
+
+	incidents := []Incident{}
+	if rows, err := s.db.Query(`SELECT ` + incidentCols + ` FROM incidents
+		WHERE status IN ('open','ack','resolved')
+		ORDER BY created_at DESC LIMIT 20`); err == nil {
+		for rows.Next() {
+			in, err := scanIncident(rows)
+			if err == nil {
+				in.Updates = s.incidentUpdates(in.ID)
+				incidents = append(incidents, *in)
+			}
+		}
+		rows.Close()
+	}
+
+	maintenance := []MaintWindow{}
+	if rows, err := s.db.Query(`SELECT ` + windowCols + ` FROM maintenance_windows
+		WHERE datetime(ends_at) > datetime('now') ORDER BY starts_at LIMIT 10`); err == nil {
+		for rows.Next() {
+			if w, err := scanWindow(rows); err == nil {
+				maintenance = append(maintenance, *w)
+			}
+		}
+		rows.Close()
+	}
+
+	// Overall state: down wins over maintenance wins over pending.
+	overall := "up"
+	for _, m := range mons {
+		switch m.Status {
+		case "down":
+			overall = "down"
+		case "maintenance":
+			if overall == "up" {
+				overall = "maintenance"
+			}
+		case "pending":
+			if overall == "up" {
+				overall = "pending"
+			}
+		}
+	}
+	for _, sm := range systems {
+		if sm.Status == "down" {
+			overall = "down"
+		}
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"title":       p.Title,
+		"slug":        p.Slug,
+		"description": p.Description,
+		"overall":     overall,
+		"monitors":    mons,
+		"systems":     systems,
+		"incidents":   incidents,
+		"maintenance": maintenance,
+	})
+}
+
+// ---------- auto-incident hook ----------
+
+// autoIncident opens an incident when a monitor goes down and resolves the
+// matching open incident when it recovers. Suppressed during maintenance.
+func (s *Server) autoIncident(monitorID, name, next string) {
+	if s.inMaintenance(monitorID) {
+		return
+	}
+	if next == "down" {
+		// Don't stack duplicates on a flap loop.
+		var open string
+		if err := s.db.QueryRow(`SELECT id FROM incidents
+			WHERE monitor_id = ? AND status IN ('open','ack')`, monitorID).Scan(&open); err == nil {
+			return
+		}
+		id := newID("inc")
+		title := fmt.Sprintf("Monitor %q is down", name)
+		if _, err := s.db.Exec(`INSERT INTO incidents (id, title, severity, status, monitor_id)
+			VALUES (?,?,'major','open',?)`, id, title, monitorID); err != nil {
+			s.log.Error("auto incident", zap.Error(err))
+			return
+		}
+		_, _ = s.db.Exec(`INSERT INTO incident_updates (incident_id, status, message)
+			VALUES (?,'open','Opened automatically — monitor reported down.')`, id)
+		return
+	}
+	if next == "up" {
+		res, err := s.db.Exec(`UPDATE incidents SET status = 'resolved',
+			updated_at = strftime('%Y-%m-%dT%H:%M:%fZ','now')
+			WHERE monitor_id = ? AND status IN ('open','ack')`, monitorID)
+		if err != nil {
+			return
+		}
+		if n, _ := res.RowsAffected(); n > 0 {
+			rows, _ := s.db.Query(`SELECT id FROM incidents WHERE monitor_id = ? AND status = 'resolved'`, monitorID)
+			var ids []string
+			if rows != nil {
+				for rows.Next() {
+					var id string
+					if rows.Scan(&id) == nil {
+						ids = append(ids, id)
+					}
+				}
+				rows.Close()
+			}
+			for _, id := range ids {
+				_, _ = s.db.Exec(`INSERT INTO incident_updates (incident_id, status, message)
+					VALUES (?,'resolved','Resolved automatically — monitor recovered.')`, id)
+			}
+		}
+	}
+}

apps/backend/internal/api/systems.go

@@ -0,0 +1,343 @@
+package api
+
+import (
+	"context"
+	"database/sql"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+	"github.com/tdvorak/dash/internal/widget"
+	"go.uber.org/zap"
+)
+
+// ---------- model ----------
+
+// StatSample is one agent payload. Numeric fields are optional-ish: the
+// agent may omit what a platform cannot provide.
+type StatSample struct {
+	Host       string            `json:"host"`
+	OS         string            `json:"os"`
+	Arch       string            `json:"arch"`
+	CPUModel   string            `json:"cpuModel"`
+	Cores      int               `json:"cores"`
+	IntervalS  int               `json:"intervalS"`
+	UptimeS    float64           `json:"uptimeS"`
+	CPU        float64           `json:"cpu"`      // percent
+	MemTotal   float64           `json:"memTotal"` // bytes
+	MemUsed    float64           `json:"memUsed"`
+	SwapTotal  float64           `json:"swapTotal"`
+	SwapUsed   float64           `json:"swapUsed"`
+	DiskTotal  float64           `json:"diskTotal"` // bytes, root fs
+	DiskUsed   float64           `json:"diskUsed"`
+	NetRx      float64           `json:"netRx"` // bytes/sec
+	NetTx      float64           `json:"netTx"`
+	Load1      float64           `json:"load1"`
+	Load5      float64           `json:"load5"`
+	Load15     float64           `json:"load15"`
+	Temps      map[string]float64 `json:"temps"`
+	Containers []ContainerStat   `json:"containers"`
+}
+
+// ContainerStat is one Docker container's liveness; per-container CPU/mem
+// needs cgroup sampling — deferred (v1 ships name+state only).
+type ContainerStat struct {
+	Name  string `json:"name"`
+	State string `json:"state"`
+}
+
+// System is one monitored host; `latest` is the newest StatSample.
+type System struct {
+	ID         string      `json:"id"`
+	Name       string      `json:"name"`
+	Token      string      `json:"token"`
+	Host       string      `json:"host"`
+	OS         string      `json:"os"`
+	Arch       string      `json:"arch"`
+	CPUModel   string      `json:"cpuModel"`
+	Cores      int         `json:"cores"`
+	IntervalS  int         `json:"intervalS"`
+	Status     string      `json:"status"` // pending | up | down
+	LastSeenAt *string     `json:"lastSeenAt"`
+	Latest     *StatSample `json:"latest"`
+	CreatedAt  string      `json:"createdAt"`
+}
+
+const systemCols = `id, name, token, host, os, arch, cpu_model, cores,
+	interval_s, status, last_seen_at, latest, created_at`
+
+func scanSystem(row interface{ Scan(...any) error }) (*System, error) {
+	var sys System
+	var latest string
+	err := row.Scan(&sys.ID, &sys.Name, &sys.Token, &sys.Host, &sys.OS,
+		&sys.Arch, &sys.CPUModel, &sys.Cores, &sys.IntervalS, &sys.Status,
+		&sys.LastSeenAt, &latest, &sys.CreatedAt)
+	if err != nil {
+		return nil, err
+	}
+	if latest != "" && latest != "{}" {
+		var s StatSample
+		if json.Unmarshal([]byte(latest), &s) == nil {
+			sys.Latest = &s
+		}
+	}
+	return &sys, nil
+}
+
+func (s *Server) loadSystem(id string) (*System, error) {
+	return scanSystem(s.db.QueryRow(`SELECT `+systemCols+` FROM systems WHERE id = ?`, id))
+}
+
+func (s *Server) loadSystemByToken(token string) (*System, error) {
+	return scanSystem(s.db.QueryRow(
+		`SELECT `+systemCols+` FROM systems WHERE token = ?`, token))
+}
+
+// ---------- handlers ----------
+
+func (s *Server) listSystemsH(c *gin.Context) {
+	rows, err := s.db.Query(`SELECT ` + systemCols + ` FROM systems ORDER BY name`)
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	defer rows.Close()
+	out := []System{}
+	for rows.Next() {
+		sys, err := scanSystem(rows)
+		if err != nil {
+			fail(c, http.StatusInternalServerError, err.Error())
+			return
+		}
+		out = append(out, *sys)
+	}
+	c.JSON(http.StatusOK, out)
+}
+
+func (s *Server) createSystem(c *gin.Context) {
+	var in struct {
+		Name string `json:"name"`
+	}
+	if err := c.ShouldBindJSON(&in); err != nil || in.Name == "" {
+		fail(c, http.StatusBadRequest, "name required")
+		return
+	}
+	id := newID("sys")
+	if _, err := s.db.Exec(`INSERT INTO systems (id, name, token) VALUES (?,?,?)`,
+		id, in.Name, newID("agent")); err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	sys, err := s.loadSystem(id)
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	c.JSON(http.StatusCreated, sys)
+}
+
+func (s *Server) getSystem(c *gin.Context) {
+	sys, err := s.loadSystem(c.Param("id"))
+	if notFound(err) {
+		fail(c, http.StatusNotFound, "system not found")
+		return
+	}
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	c.JSON(http.StatusOK, sys)
+}
+
+func (s *Server) patchSystem(c *gin.Context) {
+	id := c.Param("id")
+	if _, err := s.loadSystem(id); notFound(err) {
+		fail(c, http.StatusNotFound, "system not found")
+		return
+	}
+	var in struct {
+		Name   *string `json:"name"`
+		Rotate *bool   `json:"rotateToken"`
+	}
+	if err := c.ShouldBindJSON(&in); err != nil {
+		fail(c, http.StatusBadRequest, "invalid body")
+		return
+	}
+	if in.Name != nil && *in.Name != "" {
+		_, _ = s.db.Exec(`UPDATE systems SET name = ? WHERE id = ?`, *in.Name, id)
+	}
+	if in.Rotate != nil && *in.Rotate {
+		_, _ = s.db.Exec(`UPDATE systems SET token = ? WHERE id = ?`, newID("agent"), id)
+	}
+	sys, err := s.loadSystem(id)
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	c.JSON(http.StatusOK, sys)
+}
+
+func (s *Server) deleteSystem(c *gin.Context) {
+	res, err := s.db.Exec(`DELETE FROM systems WHERE id = ?`, c.Param("id"))
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	if n, _ := res.RowsAffected(); n == 0 {
+		fail(c, http.StatusNotFound, "system not found")
+		return
+	}
+	c.Status(http.StatusNoContent)
+}
+
+// systemStats returns stored samples newest-last for charting.
+func (s *Server) systemStats(c *gin.Context) {
+	if _, err := s.loadSystem(c.Param("id")); notFound(err) {
+		fail(c, http.StatusNotFound, "system not found")
+		return
+	}
+	hours, _ := strconv.Atoi(c.DefaultQuery("hours", "24"))
+	if hours <= 0 || hours > 24*7 {
+		hours = 24
+	}
+	rows, err := s.db.Query(`SELECT ts, payload FROM system_stats
+		WHERE system_id = ? AND ts >= datetime('now', ?) ORDER BY ts`,
+		c.Param("id"), "-"+strconv.Itoa(hours)+" hours")
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	defer rows.Close()
+	type sample struct {
+		TS string `json:"ts"`
+		StatSample
+	}
+	out := []sample{}
+	for rows.Next() {
+		var ts, payload string
+		if err := rows.Scan(&ts, &payload); err != nil {
+			fail(c, http.StatusInternalServerError, err.Error())
+			return
+		}
+		var sm sample
+		sm.TS = ts
+		if json.Unmarshal([]byte(payload), &sm.StatSample) == nil {
+			out = append(out, sm)
+		}
+	}
+	c.JSON(http.StatusOK, out)
+}
+
+// ingestSystem receives one agent push. Auth: Authorization: Bearer <token>.
+func (s *Server) ingestSystem(c *gin.Context) {
+	token := strings.TrimPrefix(c.GetHeader("Authorization"), "Bearer ")
+	if token == "" {
+		token = c.GetHeader("X-Dash-Token")
+	}
+	if token == "" {
+		fail(c, http.StatusUnauthorized, "token required")
+		return
+	}
+	sys, err := s.loadSystemByToken(token)
+	if err != nil {
+		fail(c, http.StatusUnauthorized, "unknown token")
+		return
+	}
+	var sample StatSample
+	if err := c.ShouldBindJSON(&sample); err != nil {
+		fail(c, http.StatusBadRequest, "invalid body")
+		return
+	}
+	if sample.IntervalS <= 0 {
+		sample.IntervalS = 10
+	}
+	payload, _ := json.Marshal(&sample)
+	prev := sys.Status
+	_, err = s.db.Exec(`UPDATE systems SET
+		host = ?, os = ?, arch = ?, cpu_model = ?, cores = ?, interval_s = ?,
+		status = 'up', last_seen_at = strftime('%Y-%m-%dT%H:%M:%fZ','now'),
+		latest = ?
+		WHERE id = ?`,
+		sample.Host, sample.OS, sample.Arch, sample.CPUModel, sample.Cores,
+		sample.IntervalS, string(payload), sys.ID)
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	if _, err := s.db.Exec(`INSERT INTO system_stats (system_id, payload) VALUES (?,?)`,
+		sys.ID, string(payload)); err != nil {
+		s.log.Error("system stats insert", zap.Error(err))
+	}
+	if prev != "up" {
+		s.notify("system.up", sys.Name,
+			fmt.Sprintf("System %q is back online (%s)", sys.Name, sample.Host))
+	}
+	c.JSON(http.StatusOK, gin.H{"status": "ok"})
+}
+
+// sweepSystems marks agents down when silent for > 3 intervals (min 30s).
+func (s *Server) sweepSystems() {
+	rows, err := s.db.Query(`UPDATE systems SET status = 'down'
+		WHERE status = 'up' AND last_seen_at IS NOT NULL
+		AND datetime(last_seen_at, '+' || MAX(3 * interval_s, 30) || ' seconds') <= datetime('now')
+		RETURNING id, name, host`)
+	if err != nil {
+		s.log.Error("system sweep", zap.Error(err))
+		return
+	}
+	defer rows.Close()
+	for rows.Next() {
+		var id, name, host string
+		if rows.Scan(&id, &name, &host) == nil {
+			s.notify("system.down", name,
+				fmt.Sprintf("System %q stopped reporting (%s)", name, host))
+		}
+	}
+}
+
+// ---------- widget fetcher ----------
+
+// systemWidget serves board tiles bound to a system via config.systemId.
+type systemWidget struct{ db *sql.DB }
+
+func (w *systemWidget) Meta() widget.Type {
+	return widget.Type{
+		Type: "system", Name: "System",
+		Description: "Live CPU/memory/disk of a monitored host",
+		Fields: []widget.Field{
+			{Key: "systemId", Label: "System", Required: true},
+		},
+	}
+}
+
+func (w *systemWidget) Fetch(_ context.Context, cfg json.RawMessage) (any, error) {
+	var c struct {
+		SystemID string `json:"systemId"`
+	}
+	if err := json.Unmarshal(cfg, &c); err != nil || c.SystemID == "" {
+		return nil, errors.New("config.systemId required")
+	}
+	var name, status, latest string
+	var lastSeen *string
+	err := w.db.QueryRow(`SELECT name, status, last_seen_at, latest
+		FROM systems WHERE id = ?`, c.SystemID).Scan(&name, &status, &lastSeen, &latest)
+	if err != nil {
+		return nil, errors.New("system not found")
+	}
+	var sm StatSample
+	_ = json.Unmarshal([]byte(latest), &sm)
+	return map[string]any{
+		"name":     name,
+		"status":   status,
+		"lastSeen": lastSeen,
+		"cpu":      sm.CPU,
+		"memTotal": sm.MemTotal,
+		"memUsed":  sm.MemUsed,
+		"diskTotal": sm.DiskTotal,
+		"diskUsed":  sm.DiskUsed,
+	}, nil
+}

apps/backend/internal/api/transfer.go

@@ -2,16 +2,70 @@ package api
 
 import (
 	"encoding/json"
+	"errors"
+	"fmt"
 	"net/http"
 
 	"github.com/gin-gonic/gin"
 )
 
+// errBadInput marks payload validation failures so import handlers can map
+// them to 400 while genuine DB failures stay 500.
+var errBadInput = errors.New("invalid import payload")
+
+// failImport maps replaceBoard errors: bad input -> 400, the rest -> 500.
+func failImport(c *gin.Context, err error) {
+	if errors.Is(err, errBadInput) {
+		fail(c, http.StatusBadRequest, err.Error())
+		return
+	}
+	fail(c, http.StatusInternalServerError, err.Error())
+}
+
 // Export is the portable backup shape: version + settings + board tree.
+// v2 adds monitoring entities alongside — additive, so v1 files still import.
 type Export struct {
 	Version  int                        `json:"version"`
 	Settings map[string]json.RawMessage `json:"settings"`
 	Sections []Section                  `json:"sections"`
+	Monitors []json.RawMessage          `json:"monitors,omitempty"`
+	Domains  []json.RawMessage          `json:"domains,omitempty"`
+	Systems  []json.RawMessage          `json:"systems,omitempty"`
+}
+
+// dumpRows serializes each row of a table to JSON via the driver's column
+// metadata — schema drift can't silently drop columns from the backup.
+func (s *Server) dumpRows(table string) ([]json.RawMessage, error) {
+	rows, err := s.db.Query(`SELECT * FROM ` + table) // table is a fixed literal
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	cols, err := rows.Columns()
+	if err != nil {
+		return nil, err
+	}
+	out := []json.RawMessage{}
+	for rows.Next() {
+		vals := make([]any, len(cols))
+		ptrs := make([]any, len(cols))
+		for i := range vals {
+			ptrs[i] = &vals[i]
+		}
+		if err := rows.Scan(ptrs...); err != nil {
+			return nil, err
+		}
+		obj := map[string]any{}
+		for i, col := range cols {
+			obj[col] = vals[i]
+		}
+		b, err := json.Marshal(obj)
+		if err != nil {
+			return nil, err
+		}
+		out = append(out, b)
+	}
+	return out, rows.Err()
 }
 
 func (s *Server) exportBoard(c *gin.Context) {
@@ -25,7 +79,20 @@ func (s *Server) exportBoard(c *gin.Context) {
 		fail(c, http.StatusInternalServerError, err.Error())
 		return
 	}
-	c.JSON(http.StatusOK, Export{Version: 1, Settings: settings, Sections: sections})
+	ex := Export{Version: 2, Settings: settings, Sections: sections}
+	for _, t := range []struct {
+		name string
+		dst  *[]json.RawMessage
+	}{
+		{"monitors", &ex.Monitors},
+		{"domains", &ex.Domains},
+		{"systems", &ex.Systems},
+	} {
+		if rows, err := s.dumpRows(t.name); err == nil {
+			*t.dst = rows
+		}
+	}
+	c.JSON(http.StatusOK, ex)
 }
 
 // importBoard replaces board state inside one transaction. Ids from the
@@ -36,75 +103,10 @@ func (s *Server) importBoard(c *gin.Context) {
 		fail(c, http.StatusBadRequest, "invalid export payload")
 		return
 	}
-
-	tx, err := s.db.Begin()
-	if err != nil {
-		fail(c, http.StatusInternalServerError, err.Error())
+	if err := s.replaceBoard(in.Sections, in.Settings); err != nil {
+		failImport(c, err)
 		return
 	}
-	defer func() { _ = tx.Rollback() }()
-
-	for _, q := range []string{`DELETE FROM urls`, `DELETE FROM items`, `DELETE FROM sections`} {
-		if _, err := tx.Exec(q); err != nil {
-			fail(c, http.StatusInternalServerError, err.Error())
-			return
-		}
-	}
-	for _, sec := range in.Sections {
-		if sec.ID == "" || sec.Name == "" {
-			fail(c, http.StatusBadRequest, "section missing id or name")
-			return
-		}
-		if _, err := tx.Exec(`INSERT INTO sections (id, name, position, collapsed) VALUES (?, ?, ?, ?)`,
-			sec.ID, sec.Name, sec.Position, sec.Collapsed); err != nil {
-			fail(c, http.StatusInternalServerError, err.Error())
-			return
-		}
-		for _, it := range sec.Items {
-			if it.ID == "" || it.Name == "" {
-				fail(c, http.StatusBadRequest, "item missing id or name")
-				return
-			}
-			var cfg any
-			if it.Config != nil {
-				cfg = string(*it.Config)
-			}
-			if _, err := tx.Exec(
-				`INSERT INTO items (id, section_id, kind, name, icon, position, config) VALUES (?, ?, ?, ?, ?, ?, ?)`,
-				it.ID, sec.ID, orDefault(it.Kind, "service"), it.Name, it.Icon, it.Position, cfg); err != nil {
-				fail(c, http.StatusInternalServerError, err.Error())
-				return
-			}
-			for _, u := range it.URLs {
-				if !validURL(u.URL) {
-					fail(c, http.StatusBadRequest, "invalid url: "+u.URL)
-					return
-				}
-				uid := u.ID
-				if uid == "" {
-					uid = newID("u")
-				}
-				if _, err := tx.Exec(`INSERT INTO urls (id, item_id, url, label, position) VALUES (?, ?, ?, ?, ?)`,
-					uid, it.ID, u.URL, u.Label, u.Position); err != nil {
-					fail(c, http.StatusInternalServerError, err.Error())
-					return
-				}
-			}
-		}
-	}
-	for k, v := range in.Settings {
-		if _, err := tx.Exec(
-			`INSERT INTO settings (key, value) VALUES (?, ?)
-			 ON CONFLICT(key) DO UPDATE SET value = excluded.value`, k, string(v)); err != nil {
-			fail(c, http.StatusInternalServerError, err.Error())
-			return
-		}
-	}
-	if err := tx.Commit(); err != nil {
-		fail(c, http.StatusInternalServerError, err.Error())
-		return
-	}
-
 	sections, err := s.board()
 	if err != nil {
 		fail(c, http.StatusInternalServerError, err.Error())
@@ -113,6 +115,66 @@ func (s *Server) importBoard(c *gin.Context) {
 	c.JSON(http.StatusOK, sections)
 }
 
+// replaceBoard swaps all board rows inside one transaction — shared by the
+// Dash export import and the external-config importers.
+func (s *Server) replaceBoard(sections []Section, settings map[string]json.RawMessage) error {
+	tx, err := s.db.Begin()
+	if err != nil {
+		return err
+	}
+	defer func() { _ = tx.Rollback() }()
+
+	for _, q := range []string{`DELETE FROM urls`, `DELETE FROM items`, `DELETE FROM sections`} {
+		if _, err := tx.Exec(q); err != nil {
+			return err
+		}
+	}
+	for _, sec := range sections {
+		if sec.ID == "" || sec.Name == "" {
+			return fmt.Errorf("%w: section missing id or name", errBadInput)
+		}
+		if _, err := tx.Exec(`INSERT INTO sections (id, name, position, collapsed) VALUES (?, ?, ?, ?)`,
+			sec.ID, sec.Name, sec.Position, sec.Collapsed); err != nil {
+			return err
+		}
+		for _, it := range sec.Items {
+			if it.ID == "" || it.Name == "" {
+				return fmt.Errorf("%w: item missing id or name", errBadInput)
+			}
+			var cfg any
+			if it.Config != nil {
+				cfg = string(*it.Config)
+			}
+			if _, err := tx.Exec(
+				`INSERT INTO items (id, section_id, kind, name, icon, position, config) VALUES (?, ?, ?, ?, ?, ?, ?)`,
+				it.ID, sec.ID, orDefault(it.Kind, "service"), it.Name, it.Icon, it.Position, cfg); err != nil {
+				return err
+			}
+			for _, u := range it.URLs {
+				if !validURL(u.URL) {
+					return fmt.Errorf("%w: invalid url: %s", errBadInput, u.URL)
+				}
+				uid := u.ID
+				if uid == "" {
+					uid = newID("u")
+				}
+				if _, err := tx.Exec(`INSERT INTO urls (id, item_id, url, label, position) VALUES (?, ?, ?, ?, ?)`,
+					uid, it.ID, u.URL, u.Label, u.Position); err != nil {
+					return err
+				}
+			}
+		}
+	}
+	for k, v := range settings {
+		if _, err := tx.Exec(
+			`INSERT INTO settings (key, value) VALUES (?, ?)
+			 ON CONFLICT(key) DO UPDATE SET value = excluded.value`, k, string(v)); err != nil {
+			return err
+		}
+	}
+	return tx.Commit()
+}
+
 func orDefault(v, def string) string {
 	if v == "" {
 		return def

apps/backend/internal/db/migrations/0003_monitors.sql

@@ -0,0 +1,45 @@
+-- +goose Up
+-- Uptime monitors and their check history (merge phase M1).
+CREATE TABLE monitors (
+    id             TEXT PRIMARY KEY,
+    name           TEXT NOT NULL,
+    type           TEXT NOT NULL CHECK (type IN ('http','tcp','ping','dns','keyword','json','push')),
+    url            TEXT NOT NULL DEFAULT '',
+    hostname       TEXT NOT NULL DEFAULT '',
+    port           INTEGER NOT NULL DEFAULT 0,
+    method         TEXT NOT NULL DEFAULT 'GET',
+    headers        JSON NOT NULL DEFAULT '{}',
+    body           TEXT NOT NULL DEFAULT '',
+    keyword        TEXT NOT NULL DEFAULT '',
+    keyword_invert INTEGER NOT NULL DEFAULT 0,
+    json_query     TEXT NOT NULL DEFAULT '',
+    expected       TEXT NOT NULL DEFAULT '',
+    dns_type       TEXT NOT NULL DEFAULT 'A',
+    interval_s     INTEGER NOT NULL DEFAULT 60,
+    timeout_s      INTEGER NOT NULL DEFAULT 10,
+    retries        INTEGER NOT NULL DEFAULT 0,
+    active         INTEGER NOT NULL DEFAULT 1,
+    status         TEXT NOT NULL DEFAULT 'pending' CHECK (status IN ('up','down','pending','paused','maintenance')),
+    push_token     TEXT NOT NULL DEFAULT '',
+    tags           JSON NOT NULL DEFAULT '[]',
+    notes          TEXT NOT NULL DEFAULT '',
+    position       REAL NOT NULL DEFAULT 0,
+    last_check     TEXT,
+    created_at     TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ', 'now'))
+);
+CREATE INDEX monitors_due ON monitors(active, last_check);
+
+CREATE TABLE heartbeats (
+    id          INTEGER PRIMARY KEY AUTOINCREMENT,
+    monitor_id  TEXT NOT NULL REFERENCES monitors(id) ON DELETE CASCADE,
+    status      TEXT NOT NULL CHECK (status IN ('up','down')),
+    ping_ms     INTEGER NOT NULL DEFAULT 0,
+    msg         TEXT NOT NULL DEFAULT '',
+    cert_expiry INTEGER NOT NULL DEFAULT -1,
+    checked_at  TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ', 'now'))
+);
+CREATE INDEX heartbeats_monitor_time ON heartbeats(monitor_id, checked_at);
+
+-- +goose Down
+DROP TABLE heartbeats;
+DROP TABLE monitors;

apps/backend/internal/db/migrations/0004_domains.sql

@@ -0,0 +1,84 @@
+-- +goose Up
+-- Domain monitoring (merge phase M2). One wide table mirrors the flat
+-- lookup Result; domain_checks snapshots each refresh for change history.
+CREATE TABLE domains (
+    id                 TEXT PRIMARY KEY,
+    name               TEXT NOT NULL UNIQUE,
+    tld                TEXT NOT NULL DEFAULT '',
+    active             INTEGER NOT NULL DEFAULT 1,
+    auto_renew         INTEGER NOT NULL DEFAULT 0,
+    alert_days_before  INTEGER NOT NULL DEFAULT 30,
+    tags               JSON NOT NULL DEFAULT '[]',
+    notes              TEXT NOT NULL DEFAULT '',
+    -- whois / rdap
+    expiry_date        TEXT,
+    creation_date      TEXT,
+    updated_date       TEXT,
+    registrar_name     TEXT NOT NULL DEFAULT '',
+    registrar_id       TEXT NOT NULL DEFAULT '',
+    registrar_url      TEXT NOT NULL DEFAULT '',
+    registry_domain_id TEXT NOT NULL DEFAULT '',
+    dnssec             TEXT NOT NULL DEFAULT '',
+    statuses           JSON NOT NULL DEFAULT '[]',
+    privacy_enabled    INTEGER NOT NULL DEFAULT 0,
+    transfer_lock      INTEGER NOT NULL DEFAULT 0,
+    registrant_name    TEXT NOT NULL DEFAULT '',
+    registrant_org     TEXT NOT NULL DEFAULT '',
+    registrant_country TEXT NOT NULL DEFAULT '',
+    abuse_email        TEXT NOT NULL DEFAULT '',
+    -- dns
+    name_servers       JSON NOT NULL DEFAULT '[]',
+    mx_records         JSON NOT NULL DEFAULT '[]',
+    txt_records        JSON NOT NULL DEFAULT '[]',
+    cname              TEXT NOT NULL DEFAULT '',
+    ipv4               JSON NOT NULL DEFAULT '[]',
+    ipv6               JSON NOT NULL DEFAULT '[]',
+    -- tls leaf cert
+    ssl_issuer         TEXT NOT NULL DEFAULT '',
+    ssl_valid_from     TEXT,
+    ssl_valid_to       TEXT,
+    ssl_subject        TEXT NOT NULL DEFAULT '',
+    ssl_fingerprint    TEXT NOT NULL DEFAULT '',
+    ssl_key_size       INTEGER NOT NULL DEFAULT 0,
+    ssl_sig_algo       TEXT NOT NULL DEFAULT '',
+    ssl_alt_names      JSON NOT NULL DEFAULT '[]',
+    -- host geo
+    host_country       TEXT NOT NULL DEFAULT '',
+    host_country_code  TEXT NOT NULL DEFAULT '',
+    host_region        TEXT NOT NULL DEFAULT '',
+    host_city          TEXT NOT NULL DEFAULT '',
+    host_isp           TEXT NOT NULL DEFAULT '',
+    host_org           TEXT NOT NULL DEFAULT '',
+    host_as            TEXT NOT NULL DEFAULT '',
+    host_lat           REAL NOT NULL DEFAULT 0,
+    host_lon           REAL NOT NULL DEFAULT 0,
+    -- provider detection
+    dns_provider       TEXT NOT NULL DEFAULT '',
+    email_provider     TEXT NOT NULL DEFAULT '',
+    hosting_provider   TEXT NOT NULL DEFAULT '',
+    ca_provider        TEXT NOT NULL DEFAULT '',
+    headers            JSON NOT NULL DEFAULT '{}',
+    favicon_url        TEXT NOT NULL DEFAULT '',
+    lookup_error       TEXT NOT NULL DEFAULT '',
+    -- scheduling
+    interval_h         INTEGER NOT NULL DEFAULT 24,
+    last_checked       TEXT,
+    position           REAL NOT NULL DEFAULT 0,
+    created_at         TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ', 'now'))
+);
+CREATE INDEX domains_due ON domains(active, last_checked);
+
+CREATE TABLE domain_checks (
+    id           INTEGER PRIMARY KEY AUTOINCREMENT,
+    domain_id    TEXT NOT NULL REFERENCES domains(id) ON DELETE CASCADE,
+    expiry_date  TEXT,
+    ssl_valid_to TEXT,
+    ipv4         JSON NOT NULL DEFAULT '[]',
+    name_servers JSON NOT NULL DEFAULT '[]',
+    checked_at   TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ', 'now'))
+);
+CREATE INDEX domain_checks_domain_time ON domain_checks(domain_id, checked_at);
+
+-- +goose Down
+DROP TABLE domain_checks;
+DROP TABLE domains;

apps/backend/internal/db/migrations/0005_systems.sql

@@ -0,0 +1,31 @@
+-- +goose Up
+CREATE TABLE systems (
+    id           TEXT PRIMARY KEY,
+    name         TEXT NOT NULL,
+    token        TEXT NOT NULL UNIQUE,
+    host         TEXT NOT NULL DEFAULT '',
+    os           TEXT NOT NULL DEFAULT '',
+    arch         TEXT NOT NULL DEFAULT '',
+    cpu_model    TEXT NOT NULL DEFAULT '',
+    cores        INTEGER NOT NULL DEFAULT 0,
+    interval_s   INTEGER NOT NULL DEFAULT 10,
+    status       TEXT NOT NULL DEFAULT 'pending',
+    last_seen_at TEXT,
+    latest       TEXT NOT NULL DEFAULT '{}',
+    created_at   TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now'))
+);
+
+-- Whole agent payload per tick; no sub-field queries, so one JSON column
+-- instead of a wide row that drifts with every agent version.
+CREATE TABLE system_stats (
+    system_id TEXT NOT NULL REFERENCES systems(id) ON DELETE CASCADE,
+    ts        TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now')),
+    payload   TEXT NOT NULL,
+    PRIMARY KEY (system_id, ts)
+);
+
+CREATE INDEX idx_system_stats_ts ON system_stats(ts);
+
+-- +goose Down
+DROP TABLE IF EXISTS system_stats;
+DROP TABLE IF EXISTS systems;

apps/backend/internal/db/migrations/0006_ops.sql

@@ -0,0 +1,45 @@
+-- +goose Up
+CREATE TABLE incidents (
+    id         TEXT PRIMARY KEY,
+    title      TEXT NOT NULL,
+    severity   TEXT NOT NULL DEFAULT 'major',   -- minor | major | critical
+    status     TEXT NOT NULL DEFAULT 'open',    -- open | ack | resolved | closed
+    monitor_id TEXT REFERENCES monitors(id) ON DELETE SET NULL,
+    created_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now')),
+    updated_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now'))
+);
+CREATE INDEX idx_incidents_status ON incidents(status);
+
+CREATE TABLE incident_updates (
+    id          INTEGER PRIMARY KEY AUTOINCREMENT,
+    incident_id TEXT NOT NULL REFERENCES incidents(id) ON DELETE CASCADE,
+    status      TEXT NOT NULL,
+    message     TEXT NOT NULL DEFAULT '',
+    at          TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now'))
+);
+CREATE INDEX idx_incident_updates_inc ON incident_updates(incident_id);
+
+CREATE TABLE maintenance_windows (
+    id          TEXT PRIMARY KEY,
+    title       TEXT NOT NULL,
+    starts_at   TEXT NOT NULL,
+    ends_at     TEXT NOT NULL,
+    monitor_ids TEXT NOT NULL DEFAULT '[]',  -- JSON array; empty covers all
+    created_at  TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now'))
+);
+
+CREATE TABLE status_pages (
+    id          TEXT PRIMARY KEY,
+    slug        TEXT NOT NULL UNIQUE,
+    title       TEXT NOT NULL,
+    description TEXT NOT NULL DEFAULT '',
+    monitor_ids TEXT NOT NULL DEFAULT '[]',  -- JSON array; empty = all monitors
+    system_ids  TEXT NOT NULL DEFAULT '[]',
+    created_at  TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now'))
+);
+
+-- +goose Down
+DROP TABLE IF EXISTS status_pages;
+DROP TABLE IF EXISTS maintenance_windows;
+DROP TABLE IF EXISTS incident_updates;
+DROP TABLE IF EXISTS incidents;

apps/backend/internal/domain/domain.go

@@ -0,0 +1,404 @@
+// Package domain is the domain-intelligence half of the Beszel/Domain-Locker
+// merge: given a domain name it gathers WHOIS/RDAP registration data, DNS
+// records, TLS certificate details, host geolocation, and provider hints.
+// Pure lookup logic — no DB, no HTTP handlers.
+package domain
+
+import (
+	"context"
+	"crypto/ecdsa"
+	"crypto/rsa"
+	"crypto/sha256"
+	"crypto/tls"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"regexp"
+	"strings"
+	"time"
+)
+
+// Lookup bundles the shared HTTP client used by the network probes.
+type Lookup struct {
+	http *http.Client
+}
+
+func NewLookup() *Lookup {
+	return &Lookup{http: &http.Client{Timeout: 10 * time.Second}}
+}
+
+// Result is everything one refresh learns about a domain. Fields stay flat —
+// the API layer maps them 1:1 onto the domains table columns.
+type Result struct {
+	Name string `json:"name"`
+	TLD  string `json:"tld"`
+
+	// WHOIS / RDAP
+	ExpiryDate       *time.Time `json:"expiryDate"`
+	CreationDate     *time.Time `json:"creationDate"`
+	UpdatedDate      *time.Time `json:"updatedDate"`
+	RegistrarName    string     `json:"registrarName"`
+	RegistrarID      string     `json:"registrarId"`
+	RegistrarURL     string     `json:"registrarUrl"`
+	RegistryDomainID string     `json:"registryDomainId"`
+	DNSSEC           string     `json:"dnssec"`
+	Statuses         []string   `json:"statuses"`
+	PrivacyEnabled   bool       `json:"privacyEnabled"`
+	TransferLock     bool       `json:"transferLock"`
+	RegistrantName   string     `json:"registrantName"`
+	RegistrantOrg    string     `json:"registrantOrg"`
+	RegistrantCountry string    `json:"registrantCountry"`
+	AbuseEmail       string     `json:"abuseEmail"`
+
+	// DNS
+	NameServers []string `json:"nameServers"`
+	MXRecords   []string `json:"mxRecords"`
+	TXTRecords  []string `json:"txtRecords"`
+	CNAME       string   `json:"cname"`
+	IPv4        []string `json:"ipv4"`
+	IPv6        []string `json:"ipv6"`
+
+	// TLS leaf certificate
+	SSLIssuer       string     `json:"sslIssuer"`
+	SSLValidFrom    *time.Time `json:"sslValidFrom"`
+	SSLValidTo      *time.Time `json:"sslValidTo"`
+	SSLSubject      string     `json:"sslSubject"`
+	SSLFingerprint  string     `json:"sslFingerprint"`
+	SSLKeySize      int        `json:"sslKeySize"`
+	SSLSigAlgo      string     `json:"sslSigAlgo"`
+	SSLAltNames     []string   `json:"sslAltNames"`
+
+	// Host geolocation (ip-api.com; empty when unreachable/private)
+	HostCountry     string  `json:"hostCountry"`
+	HostCountryCode string  `json:"hostCountryCode"`
+	HostRegion      string  `json:"hostRegion"`
+	HostCity        string  `json:"hostCity"`
+	HostISP         string  `json:"hostIsp"`
+	HostOrg         string  `json:"hostOrg"`
+	HostAS          string  `json:"hostAs"`
+	HostLat         float64 `json:"hostLat"`
+	HostLon         float64 `json:"hostLon"`
+
+	// Provider detection
+	DNSProvider     string `json:"dnsProvider"`
+	EmailProvider   string `json:"emailProvider"`
+	HostingProvider string `json:"hostingProvider"`
+	CAProvider      string `json:"caProvider"`
+
+	Headers   map[string]string `json:"headers"`
+	FaviconURL string           `json:"faviconUrl"`
+	Error     string            `json:"error"` // non-fatal partial failure note
+}
+
+// Clean normalises user input to a bare registrable hostname.
+func Clean(name string) string {
+	name = strings.TrimSpace(strings.ToLower(name))
+	name = regexp.MustCompile(`^https?://`).ReplaceAllString(name, "")
+	name = regexp.MustCompile(`^www\.`).ReplaceAllString(name, "")
+	if i := strings.IndexAny(name, "/?#"); i >= 0 {
+		name = name[:i]
+	}
+	if i := strings.Index(name, ":"); i >= 0 {
+		name = name[:i]
+	}
+	return name
+}
+
+// Valid reports whether s is a plausible DNS name we can query for.
+func Valid(s string) bool { return validDomainName(s) }
+
+// Run gathers everything. Individual probe failures are non-fatal — a domain
+// with no HTTPS still returns WHOIS+DNS. The returned Error field carries the
+// first fatal WHOIS failure when even registration data is unavailable.
+func (l *Lookup) Run(ctx context.Context, rawName string) *Result {
+	name := Clean(rawName)
+	r := &Result{
+		Name:        name,
+		TLD:         tldOf(name),
+		Statuses:    []string{},
+		NameServers: []string{},
+		MXRecords:   []string{},
+		TXTRecords:  []string{},
+		IPv4:        []string{},
+		IPv6:        []string{},
+		SSLAltNames: []string{},
+		Headers:     map[string]string{},
+		FaviconURL:  fmt.Sprintf("https://www.google.com/s2/favicons?domain=%s&sz=128", name),
+	}
+
+	if w, err := l.Whois(ctx, name); err == nil {
+		r.ExpiryDate = w.ExpiryDate
+		r.CreationDate = w.CreationDate
+		r.UpdatedDate = w.UpdatedDate
+		r.RegistrarName = w.RegistrarName
+		r.RegistrarID = w.RegistrarID
+		r.RegistrarURL = w.RegistrarURL
+		r.RegistryDomainID = w.RegistryDomainID
+		r.DNSSEC = w.DNSSEC
+		r.Statuses = w.Statuses
+		r.PrivacyEnabled = w.PrivacyEnabled
+		r.TransferLock = w.TransferLock
+		r.RegistrantName = w.RegistrantName
+		r.RegistrantOrg = w.RegistrantOrg
+		r.RegistrantCountry = w.RegistrantCountry
+		r.AbuseEmail = w.AbuseEmail
+	} else {
+		r.Error = "whois: " + err.Error()
+	}
+
+	l.dns(ctx, name, r)
+	l.cert(ctx, name, r)
+	if len(r.IPv4) > 0 {
+		l.host(r.IPv4[0], r)
+	}
+	l.headers(ctx, name, r)
+
+	r.DNSProvider = detectDNSProvider(r.NameServers)
+	r.EmailProvider = detectEmailProvider(r.MXRecords)
+	r.HostingProvider = detectHostingProvider(r.Headers)
+	r.CAProvider = detectCA(r.SSLIssuer)
+	return r
+}
+
+// --- DNS --------------------------------------------------------------------
+
+func (l *Lookup) dns(ctx context.Context, name string, r *Result) {
+	res := net.DefaultResolver
+	if ns, err := res.LookupNS(ctx, name); err == nil {
+		for _, n := range ns {
+			r.NameServers = append(r.NameServers, strings.TrimSuffix(strings.ToLower(n.Host), "."))
+		}
+	}
+	if mx, err := res.LookupMX(ctx, name); err == nil {
+		for _, m := range mx {
+			r.MXRecords = append(r.MXRecords, fmt.Sprintf("%s (pri %d)", strings.TrimSuffix(m.Host, "."), m.Pref))
+		}
+	}
+	if txt, err := res.LookupTXT(ctx, name); err == nil {
+		r.TXTRecords = txt
+	}
+	if c, err := res.LookupCNAME(ctx, name); err == nil && c != "" && strings.TrimSuffix(c, ".") != name {
+		r.CNAME = strings.TrimSuffix(c, ".")
+	}
+	if ips, err := res.LookupIP(ctx, "ip4", name); err == nil {
+		for _, ip := range ips {
+			r.IPv4 = append(r.IPv4, ip.String())
+		}
+	}
+	if ips, err := res.LookupIP(ctx, "ip6", name); err == nil {
+		for _, ip := range ips {
+			r.IPv6 = append(r.IPv6, ip.String())
+		}
+	}
+}
+
+// --- TLS leaf certificate ----------------------------------------------------
+
+func (l *Lookup) cert(ctx context.Context, name string, r *Result) {
+	d := &net.Dialer{Timeout: 5 * time.Second}
+	conn, err := tls.DialWithDialer(d, "tcp", net.JoinHostPort(name, "443"), &tls.Config{
+		ServerName:         name,
+		InsecureSkipVerify: true, // inspecting, not authenticating — expiry is data
+	})
+	if err != nil {
+		return
+	}
+	defer conn.Close()
+	certs := conn.ConnectionState().PeerCertificates
+	if len(certs) == 0 {
+		return
+	}
+	c := certs[0]
+	if len(c.Issuer.Organization) > 0 {
+		r.SSLIssuer = c.Issuer.Organization[0]
+	} else {
+		r.SSLIssuer = c.Issuer.CommonName
+	}
+	r.SSLValidFrom = &c.NotBefore
+	r.SSLValidTo = &c.NotAfter
+	r.SSLSubject = c.Subject.CommonName
+	fp := sha256.Sum256(c.Raw)
+	h := strings.ToUpper(hex.EncodeToString(fp[:]))
+	var parts []string
+	for i := 0; i+2 <= len(h); i += 2 {
+		parts = append(parts, h[i:i+2])
+	}
+	r.SSLFingerprint = strings.Join(parts, ":")
+	r.SSLSigAlgo = c.SignatureAlgorithm.String()
+	switch k := c.PublicKey.(type) {
+	case *rsa.PublicKey:
+		r.SSLKeySize = k.N.BitLen()
+	case *ecdsa.PublicKey:
+		r.SSLKeySize = k.Curve.Params().BitSize
+	}
+	for _, n := range c.DNSNames {
+		r.SSLAltNames = append(r.SSLAltNames, n)
+	}
+}
+
+// --- Host geolocation (ip-api.com, free non-commercial tier) -----------------
+
+func (l *Lookup) host(ip string, r *Result) {
+	req, err := http.NewRequest(http.MethodGet,
+		fmt.Sprintf("http://ip-api.com/json/%s?fields=status,country,countryCode,regionName,city,lat,lon,isp,org,as", ip), nil)
+	if err != nil {
+		return
+	}
+	resp, err := l.http.Do(req)
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+	var g struct {
+		Status  string  `json:"status"`
+		Country string  `json:"country"`
+		Code    string  `json:"countryCode"`
+		Region  string  `json:"regionName"`
+		City    string  `json:"city"`
+		Lat     float64 `json:"lat"`
+		Lon     float64 `json:"lon"`
+		ISP     string  `json:"isp"`
+		Org     string  `json:"org"`
+		AS      string  `json:"as"`
+	}
+	if err := json.NewDecoder(io.LimitReader(resp.Body, 64<<10)).Decode(&g); err != nil || g.Status != "success" {
+		return
+	}
+	r.HostCountry, r.HostCountryCode = g.Country, g.Code
+	r.HostRegion, r.HostCity = g.Region, g.City
+	r.HostISP, r.HostOrg, r.HostAS = g.ISP, g.Org, g.AS
+	r.HostLat, r.HostLon = g.Lat, g.Lon
+}
+
+// --- HTTP headers (feed provider detection) -----------------------------------
+
+func (l *Lookup) headers(ctx context.Context, name string, r *Result) {
+	for _, scheme := range []string{"https", "http"} {
+		req, err := http.NewRequestWithContext(ctx, http.MethodHead, scheme+"://"+name, nil)
+		if err != nil {
+			continue
+		}
+		req.Header.Set("User-Agent", "Dash domain lookup")
+		resp, err := l.http.Do(req)
+		if err != nil {
+			continue
+		}
+		for k, v := range resp.Header {
+			if len(v) > 0 {
+				r.Headers[strings.ToLower(k)] = v[0]
+			}
+		}
+		resp.Body.Close()
+		return
+	}
+}
+
+// --- Provider detection (condensed port of beszel's detect package) -----------
+
+func detectDNSProvider(ns []string) string {
+	table := []struct{ sub, name string }{
+		{"cloudflare", "Cloudflare"}, {"awsdns", "Amazon Route 53"},
+		{"googledomains", "Google Domains"}, {"google.com", "Google Domains"},
+		{"namecheap", "Namecheap"}, {"godaddy", "GoDaddy"}, {"domaincontrol", "GoDaddy"},
+		{"nsone.net", "NS1"}, {"digitalocean", "DigitalOcean"}, {"linode", "Linode"},
+		{"vultr", "Vultr"}, {"he.net", "Hurricane Electric"}, {"dynect", "Dyn (Oracle)"},
+		{"ultradns", "UltraDNS"}, {"dnsimple", "DNSimple"}, {"hover", "Hover"},
+		{"enom", "eNom"}, {"worldnic", "Network Solutions"}, {"zoneedit", "ZoneEdit"},
+		{"easydns", "EasyDNS"}, {"gandi", "Gandi"}, {"ovh", "OVH"},
+		{"hetzner", "Hetzner"}, {"azure-dns", "Microsoft Azure"},
+		{"dns.google", "Google Cloud DNS"}, {"porkbun", "Porkbun"},
+		{"cloudns", "ClouDNS"}, {"desec", "deSEC"}, {"nic.cz", "CZ.NIC"},
+	}
+	for _, n := range ns {
+		n = strings.ToLower(n)
+		for _, t := range table {
+			if strings.Contains(n, t.sub) {
+				return t.name
+			}
+		}
+	}
+	return ""
+}
+
+func detectEmailProvider(mx []string) string {
+	table := []struct{ sub, name string }{
+		{"google.com", "Google Workspace"}, {"aspmx", "Google Workspace"},
+		{"outlook.com", "Microsoft 365"}, {"protection.outlook", "Microsoft 365"},
+		{"mail.protection", "Microsoft 365"}, {"protonmail", "Proton Mail"},
+		{"proton.me", "Proton Mail"}, {"zoho", "Zoho Mail"},
+		{"fastmail", "Fastmail"}, {"mimecast", "Mimecast"},
+		{"proofpoint", "Proofpoint"}, {"barracuda", "Barracuda"},
+		{"mailgun", "Mailgun"}, {"sendgrid", "SendGrid"},
+		{"amazonses", "Amazon SES"}, {"yandex", "Yandex"},
+		{"tuta", "Tuta"}, {"mailbox.org", "mailbox.org"},
+	}
+	for _, m := range mx {
+		m = strings.ToLower(m)
+		for _, t := range table {
+			if strings.Contains(m, t.sub) {
+				return t.name
+			}
+		}
+	}
+	return ""
+}
+
+func detectHostingProvider(h map[string]string) string {
+	server := strings.ToLower(h["server"] + " " + h["x-powered-by"] + " " + h["via"])
+	if _, ok := h["cf-ray"]; ok || strings.Contains(server, "cloudflare") {
+		return "Cloudflare"
+	}
+	if _, ok := h["x-vercel-id"]; ok || strings.Contains(server, "vercel") {
+		return "Vercel"
+	}
+	if _, ok := h["x-nf-request-id"]; ok || strings.Contains(server, "netlify") {
+		return "Netlify"
+	}
+	if _, ok := h["x-amz-cf-id"]; ok || strings.Contains(server, "cloudfront") {
+		return "AWS CloudFront"
+	}
+	if _, ok := h["x-github-request-id"]; ok || strings.Contains(server, "github") {
+		return "GitHub Pages"
+	}
+	if strings.Contains(server, "fly.io") || h["fly-request-id"] != "" {
+		return "Fly.io"
+	}
+	if strings.Contains(server, "render") {
+		return "Render"
+	}
+	table := []struct{ sub, name string }{
+		{"nginx", "nginx"}, {"apache", "Apache"}, {"caddy", "Caddy"},
+		{"litespeed", "LiteSpeed"}, {"openresty", "OpenResty"},
+		{"envoy", "Envoy"}, {"awselb", "AWS ELB"}, {"gws", "Google"},
+		{"kestrel", "Kestrel/.NET"}, {"cowboy", "Cowboy/Erlang"},
+	}
+	for _, t := range table {
+		if strings.Contains(server, t.sub) {
+			return t.name
+		}
+	}
+	return ""
+}
+
+func detectCA(issuer string) string {
+	i := strings.ToLower(issuer)
+	table := []struct{ sub, name string }{
+		{"let's encrypt", "Let's Encrypt"}, {"letsencrypt", "Let's Encrypt"},
+		{"digicert", "DigiCert"}, {"sectigo", "Sectigo"}, {"comodoca", "Sectigo"},
+		{"globalsign", "GlobalSign"}, {"godaddy", "GoDaddy"}, {"starfield", "GoDaddy"},
+		{"entrust", "Entrust"}, {"google trust", "Google Trust Services"},
+		{"amazon", "Amazon"}, {"zerossl", "ZeroSSL"}, {"buypass", "Buypass"},
+		{"ssl.com", "SSL.com"}, {"actalis", "Actalis"}, {"certum", "Certum"},
+		{"harica", "HARICA"}, {"swisssign", "SwissSign"}, {"cloudflare", "Cloudflare"},
+		{"pki.goog", "Google Trust Services"}, {"microsoft", "Microsoft"},
+	}
+	for _, t := range table {
+		if strings.Contains(i, t.sub) {
+			return t.name
+		}
+	}
+	return ""
+}

apps/backend/internal/domain/whois.go

@@ -0,0 +1,411 @@
+// WHOIS data acquisition. Ported from Beszel's hub/domains/whois — the
+// portable parts only: RDAP via IANA bootstrap, TCP WHOIS on :43, and the
+// registry-format parser. Dropped: native `whois` exec (breaks the
+// single-binary model), EURid/whois.com HTML scraping (fragile), and the
+// paid WhoisXML API.
+package domain
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"regexp"
+	"strings"
+	"sync"
+	"time"
+)
+
+// WhoisData is the registry half of a Lookup result.
+type WhoisData struct {
+	DomainName       string
+	Statuses         []string
+	DNSSEC           string // "signed" | "unsigned" | ""
+	ExpiryDate       *time.Time
+	CreationDate     *time.Time
+	UpdatedDate      *time.Time
+	RegistrarName    string
+	RegistrarID      string
+	RegistrarURL     string
+	RegistryDomainID string
+	RegistrantName   string
+	RegistrantOrg    string
+	RegistrantCountry string
+	AbuseEmail       string
+	PrivacyEnabled   bool
+	TransferLock     bool
+}
+
+// Whois looks up registration data: RDAP first (clean JSON), TCP WHOIS as
+// fallback for TLDs without RDAP service.
+func (l *Lookup) Whois(ctx context.Context, name string) (*WhoisData, error) {
+	if d, err := l.rdap(ctx, name); err == nil && d.valid() {
+		return d, nil
+	}
+	if d, err := tcpWhois(ctx, name); err == nil && d.valid() {
+		return d, nil
+	}
+	return nil, fmt.Errorf("no whois data for %s", name)
+}
+
+func (d *WhoisData) valid() bool {
+	return d != nil && (d.ExpiryDate != nil || d.CreationDate != nil ||
+		(d.RegistrarName != "" && d.RegistrarName != "Unknown") || len(d.Statuses) > 0)
+}
+
+// --- RDAP ------------------------------------------------------------------
+
+// rdapBases caches TLD -> RDAP base URL from the IANA bootstrap registry.
+var rdapBases = struct {
+	sync.Mutex
+	m map[string]string
+}{m: map[string]string{}}
+
+func (l *Lookup) rdap(ctx context.Context, name string) (*WhoisData, error) {
+	tld := tldOf(name)
+	if tld == "" {
+		return nil, fmt.Errorf("no tld")
+	}
+	base, err := rdapBase(ctx, tld)
+	if err != nil {
+		return nil, err
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, base+"/domain/"+name, nil)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Accept", "application/rdap+json")
+	resp, err := l.http.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != http.StatusOK {
+		return nil, fmt.Errorf("rdap status %d", resp.StatusCode)
+	}
+
+	var r struct {
+		LdhName string   `json:"ldhName"`
+		Handle  string   `json:"handle"`
+		Status  []string `json:"status"`
+		Events  []struct {
+			Action string `json:"eventAction"`
+			Date   string `json:"eventDate"`
+		} `json:"events"`
+		Entities []struct {
+			Roles     []string `json:"roles"`
+			PublicIDs []struct {
+				Type       string `json:"type"`
+				Identifier string `json:"identifier"`
+			} `json:"publicIds"`
+			VCard []any `json:"vcardArray"`
+		} `json:"entities"`
+		SecureDNS struct {
+			ZoneSigned bool `json:"zoneSigned"`
+		} `json:"secureDNS"`
+	}
+	if err := json.NewDecoder(io.LimitReader(resp.Body, 1<<20)).Decode(&r); err != nil {
+		return nil, err
+	}
+
+	d := &WhoisData{DomainName: r.LdhName, Statuses: r.Status, RegistryDomainID: r.Handle}
+	if r.SecureDNS.ZoneSigned {
+		d.DNSSEC = "signed"
+	}
+	for _, e := range r.Events {
+		t, err := time.Parse(time.RFC3339, e.Date)
+		if err != nil || t.IsZero() {
+			continue
+		}
+		switch e.Action {
+		case "registration":
+			d.CreationDate = &t
+		case "expiration":
+			d.ExpiryDate = &t
+		case "last changed":
+			d.UpdatedDate = &t
+		}
+	}
+	for _, ent := range r.Entities {
+		if !hasRole(ent.Roles, "registrar") {
+			continue
+		}
+		// vcardArray: ["vcard", [[name, params, type, value], ...]]
+		if len(ent.VCard) > 1 {
+			if props, ok := ent.VCard[1].([]any); ok {
+				for _, p := range props {
+					if arr, ok := p.([]any); ok && len(arr) >= 4 && arr[0] == "fn" {
+						if s, ok := arr[3].(string); ok {
+							d.RegistrarName = s
+						}
+					}
+				}
+			}
+		}
+		for _, pid := range ent.PublicIDs {
+			if pid.Type == "IANA Registrar ID" {
+				d.RegistrarID = pid.Identifier
+			}
+		}
+	}
+	d.derive()
+	return d, nil
+}
+
+func hasRole(roles []string, want string) bool {
+	for _, r := range roles {
+		if r == want {
+			return true
+		}
+	}
+	return false
+}
+
+func rdapBase(ctx context.Context, tld string) (string, error) {
+	rdapBases.Lock()
+	defer rdapBases.Unlock()
+	if u, ok := rdapBases.m[tld]; ok {
+		return u, nil
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, "https://data.iana.org/rdap/dns.json", nil)
+	if err != nil {
+		return "", err
+	}
+	resp, err := (&http.Client{Timeout: 10 * time.Second}).Do(req)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+	var boot struct {
+		Services [][]any `json:"services"`
+	}
+	if err := json.NewDecoder(io.LimitReader(resp.Body, 4<<20)).Decode(&boot); err != nil {
+		return "", err
+	}
+	for _, svc := range boot.Services {
+		if len(svc) < 2 {
+			continue
+		}
+		tlds, _ := svc[0].([]any)
+		urls, _ := svc[1].([]any)
+		if len(urls) == 0 {
+			continue
+		}
+		base, _ := urls[0].(string)
+		for _, t := range tlds {
+			if s, ok := t.(string); ok {
+				rdapBases.m[s] = strings.TrimSuffix(base, "/")
+			}
+		}
+	}
+	if u, ok := rdapBases.m[tld]; ok {
+		return u, nil
+	}
+	return "", fmt.Errorf("no rdap server for .%s", tld)
+}
+
+// --- TCP WHOIS (:43) --------------------------------------------------------
+
+var whoisServers = map[string]string{
+	"com": "whois.verisign-grs.com", "net": "whois.verisign-grs.com",
+	"org": "whois.pir.org", "io": "whois.nic.io", "co": "whois.nic.co",
+	"dev": "whois.nic.google", "app": "whois.nic.google", "xyz": "whois.nic.xyz",
+	"info": "whois.afilias.net", "biz": "whois.biz", "us": "whois.nic.us",
+	"uk": "whois.nic.uk", "de": "whois.denic.de", "fr": "whois.nic.fr",
+	"eu": "whois.eu", "nl": "whois.domain-registry.nl", "ca": "whois.cira.ca",
+	"au": "whois.auda.org.au", "me": "whois.nic.me", "tv": "whois.nic.tv",
+	"cc": "whois.nic.cc", "name": "whois.nic.name", "pro": "whois.nic.pro",
+	"cz": "whois.nic.cz", "sk": "whois.sk-nic.sk", "pl": "whois.dns.pl",
+	"se": "whois.iis.se", "fi": "whois.fi", "no": "whois.norid.no",
+	"ch": "whois.nic.ch", "at": "whois.nic.at", "be": "whois.dns.be",
+	"it": "whois.nic.it", "es": "whois.nic.es", "pt": "whois.dns.pt",
+	"jp": "whois.jprs.jp", "kr": "whois.kr", "in": "whois.registry.in",
+	"br": "whois.registro.br", "za": "whois.registry.net.za",
+	"cloud": "whois.nic.cloud", "online": "whois.nic.online",
+	"site": "whois.nic.site", "store": "whois.nic.store", "tech": "whois.nic.tech",
+	"ai": "whois.nic.ai", "gg": "whois.gg", "sh": "whois.nic.sh",
+}
+
+func tcpWhois(ctx context.Context, name string) (*WhoisData, error) {
+	tld := tldOf(name)
+	server, ok := whoisServers[tld]
+	if !ok {
+		server = "whois.iana.org"
+	}
+	d := &net.Dialer{Timeout: 10 * time.Second}
+	conn, err := d.DialContext(ctx, "tcp", net.JoinHostPort(server, "43"))
+	if err != nil {
+		return nil, err
+	}
+	defer conn.Close()
+	_ = conn.SetDeadline(time.Now().Add(15 * time.Second))
+	if _, err := conn.Write([]byte(name + "\r\n")); err != nil {
+		return nil, err
+	}
+	raw, err := io.ReadAll(io.LimitReader(conn, 1<<20))
+	if err != nil && len(raw) == 0 {
+		return nil, err
+	}
+	out := parseWhois(string(raw), name)
+	out.derive()
+	return out, nil
+}
+
+// parseWhois flattens "Key: Value" lines and extracts the fields we store.
+// Registry formats vary wildly; the field-name fallbacks cover the common set.
+func parseWhois(raw, name string) *WhoisData {
+	d := &WhoisData{DomainName: name}
+	kv := map[string]string{}
+	for _, line := range strings.Split(raw, "\n") {
+		line = strings.TrimSpace(line)
+		if line == "" || strings.HasPrefix(line, "%") || strings.HasPrefix(line, "#") {
+			continue
+		}
+		idx := strings.Index(line, ":")
+		if idx <= 0 {
+			continue
+		}
+		key := strings.ToLower(strings.TrimSpace(line[:idx]))
+		key = strings.NewReplacer(" ", "_", "/", "_", "-", "_").Replace(key)
+		val := strings.TrimSpace(line[idx+1:])
+		if val == "" || strings.HasPrefix(strings.ToUpper(val), "REDACTED") {
+			continue
+		}
+		if _, dup := kv[key]; !dup {
+			kv[key] = val
+		}
+		switch key {
+		case "domain_status", "status":
+			if s := parseStatus(val); len(s) > 0 {
+				d.Statuses = append(d.Statuses, s...)
+			}
+		}
+	}
+
+	d.ExpiryDate = parseDate(kv["registry_expiry_date"], kv["registrar_registration_expiration_date"],
+		kv["expiry_date"], kv["expiration_time"], kv["expire"], kv["paid_until"],
+		kv["expire_date"], kv["renewal_date"], kv["valid_until"], kv["expires"])
+	d.CreationDate = parseDate(kv["creation_date"], kv["created_date"], kv["created"],
+		kv["registration_time"], kv["registered_on"], kv["domain_registered"], kv["registered"])
+	d.UpdatedDate = parseDate(kv["updated_date"], kv["last_updated"], kv["last_modified"],
+		kv["modified_date"], kv["modified"], kv["changed"])
+
+	for _, k := range []string{"registrar", "registrar_name", "sponsoring_registrar", "registrar_organization"} {
+		if v := kv[k]; v != "" {
+			d.RegistrarName = v
+			break
+		}
+	}
+	if d.RegistrarName == "" {
+		d.RegistrarName = "Unknown"
+	}
+	d.RegistrarID = kv["registrar_iana_id"]
+	d.RegistrarURL = kv["registrar_url"]
+	d.RegistryDomainID = kv["registry_domain_id"]
+
+	d.RegistrantName = firstOf(kv, "registrant_name", "registrant", "holder", "domain_holder")
+	d.RegistrantOrg = firstOf(kv, "registrant_organization", "org", "organization", "holder_org")
+	d.RegistrantCountry = firstOf(kv, "registrant_country", "country", "holder_country")
+	d.AbuseEmail = kv["registrar_abuse_contact_email"]
+
+	if v := strings.ToLower(firstOf(kv, "dnssec", "dnssec_signed", "signed_dnssec")); v == "signed" || v == "yes" || v == "true" || v == "signeddelegation" {
+		d.DNSSEC = "signed"
+	} else if v != "" {
+		d.DNSSEC = "unsigned"
+	}
+	return d
+}
+
+// derive fills computed flags after whichever lookup path populated d.
+func (d *WhoisData) derive() {
+	low := strings.ToLower(d.RegistrantName + " " + d.RegistrantOrg)
+	for _, marker := range []string{"redacted", "privacy", "whoisguard", "not disclosed", "hidden", "data protected", "gdpr"} {
+		if strings.Contains(low, marker) {
+			d.PrivacyEnabled = true
+			break
+		}
+	}
+	for _, s := range d.Statuses {
+		if sl := strings.ToLower(s); strings.Contains(sl, "transferprohibited") {
+			d.TransferLock = true
+			break
+		}
+	}
+}
+
+func firstOf(kv map[string]string, keys ...string) string {
+	for _, k := range keys {
+		if v := kv[k]; v != "" {
+			return v
+		}
+	}
+	return ""
+}
+
+var knownStatuses = []string{
+	"clientDeleteProhibited", "clientHold", "clientRenewProhibited",
+	"clientTransferProhibited", "clientUpdateProhibited",
+	"serverDeleteProhibited", "serverHold", "serverRenewProhibited",
+	"serverTransferProhibited", "serverUpdateProhibited",
+	"inactive", "ok", "pendingCreate", "pendingDelete", "pendingRenew",
+	"pendingRestore", "pendingTransfer", "pendingUpdate",
+	"addPeriod", "autoRenewPeriod", "renewPeriod", "transferPeriod",
+}
+
+func parseStatus(s string) []string {
+	s = strings.ToLower(s)
+	var out []string
+	for _, k := range knownStatuses {
+		if strings.Contains(s, strings.ToLower(k)) {
+			out = append(out, k)
+		}
+	}
+	return out
+}
+
+var dateFormats = []string{
+	time.RFC3339, "2006-01-02T15:04:05Z0700", "2006-01-02T15:04:05",
+	"2006-01-02 15:04:05", "2006-01-02 15:04:05.0", "2006-01-02",
+	"01/02/2006", "02/01/2006", "02.01.2006", "02-Jan-2006", "2-Jan-2006",
+	"Jan 2 2006", "January 2 2006", "2 Jan 2006", "Jan 02 2006",
+	"2006-01-02 15:04:05 MST", "Mon, 02 Jan 2006 15:04:05 MST",
+	"20060102", "20060102150405",
+}
+
+func parseDate(candidates ...string) *time.Time {
+	for _, s := range candidates {
+		s = strings.TrimSpace(strings.TrimPrefix(strings.TrimPrefix(s, "before "), "after "))
+		if s == "" || strings.Contains(strings.ToUpper(s), "REDACTED") {
+			continue
+		}
+		// Trim trailing "(YYYY-MM-DD)" style annotations and zone offsets in parens.
+		if i := strings.Index(s, "("); i > 0 {
+			s = strings.TrimSpace(s[:i])
+		}
+		for _, f := range dateFormats {
+			if t, err := time.Parse(f, s); err == nil && !t.IsZero() {
+				return &t
+			}
+		}
+	}
+	return nil
+}
+
+// tldOf returns the last label; registrable-domain granularity is
+// unnecessary here since we only feed it to server maps.
+func tldOf(name string) string {
+	parts := strings.Split(name, ".")
+	if len(parts) < 2 {
+		return ""
+	}
+	return strings.ToLower(parts[len(parts)-1])
+}
+
+// whoisPattern guards against sending garbage to whois servers.
+var whoisPattern = regexp.MustCompile(`^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)+$`)
+
+func validDomainName(s string) bool {
+	return len(s) <= 253 && whoisPattern.MatchString(s)
+}

apps/backend/internal/monitor/monitor.go

@@ -0,0 +1,315 @@
+// Package monitor holds the uptime-check domain: the Monitor model mirroring
+// the monitors table, plus the check implementations the scheduler invokes.
+// No DB access, no HTTP handlers — pure check logic.
+package monitor
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+
+	"golang.org/x/net/icmp"
+	"golang.org/x/net/ipv4"
+)
+
+// Monitor mirrors one row of the monitors table.
+type Monitor struct {
+	ID            string    `json:"id"`
+	Name          string    `json:"name"`
+	Type          string    `json:"type"`
+	URL           string    `json:"url"`
+	Hostname      string    `json:"hostname"`
+	Port          int       `json:"port"`
+	Method        string    `json:"method"`
+	Headers       string    `json:"headers"` // JSON object
+	Body          string    `json:"body"`
+	Keyword       string    `json:"keyword"`
+	KeywordInvert bool      `json:"keywordInvert"`
+	JSONQuery     string    `json:"jsonQuery"`
+	Expected      string    `json:"expected"`
+	DNSType       string    `json:"dnsType"`
+	IntervalS     int       `json:"intervalS"`
+	TimeoutS      int       `json:"timeoutS"`
+	Retries       int       `json:"retries"`
+	Active        bool      `json:"active"`
+	Status        string    `json:"status"`
+	PushToken     string    `json:"pushToken,omitempty"`
+	Tags          []string  `json:"tags"`
+	Notes         string    `json:"notes"`
+	Position      float64   `json:"position"`
+	LastCheck     *string   `json:"lastCheck"`
+	CreatedAt     string    `json:"createdAt"`
+}
+
+// Result is the outcome of one check.
+type Result struct {
+	Up         bool
+	PingMs     int
+	Msg        string
+	CertExpiry int // days until TLS cert expiry; -1 when not applicable
+}
+
+// Types lists the check kinds the add-monitor dialog offers.
+func Types() []string {
+	return []string{"http", "tcp", "ping", "dns", "keyword", "json", "push"}
+}
+
+// Check dispatches to the checker for m.Type. Retries happen in the caller.
+func Check(ctx context.Context, m *Monitor) *Result {
+	timeout := time.Duration(m.TimeoutS) * time.Second
+	if timeout <= 0 {
+		timeout = 10 * time.Second
+	}
+	ctx, cancel := context.WithTimeout(ctx, timeout)
+	defer cancel()
+
+	switch m.Type {
+	case "http", "keyword", "json":
+		return checkHTTP(ctx, m)
+	case "tcp":
+		return checkTCP(ctx, m)
+	case "ping":
+		return checkPing(ctx, m)
+	case "dns":
+		return checkDNS(ctx, m)
+	default:
+		return &Result{Msg: "unknown monitor type: " + m.Type}
+	}
+}
+
+func hostOf(m *Monitor) string {
+	if m.Hostname != "" {
+		return m.Hostname
+	}
+	return m.URL
+}
+
+func checkHTTP(ctx context.Context, m *Monitor) *Result {
+	method := m.Method
+	if method == "" {
+		method = http.MethodGet
+	}
+	var body io.Reader
+	if m.Body != "" {
+		body = strings.NewReader(m.Body)
+	}
+	req, err := http.NewRequestWithContext(ctx, method, m.URL, body)
+	if err != nil {
+		return &Result{Msg: "bad url: " + m.URL}
+	}
+	var hdrs map[string]string
+	if json.Unmarshal([]byte(m.Headers), &hdrs) == nil {
+		for k, v := range hdrs {
+			req.Header.Set(k, v)
+		}
+	}
+	if m.Body != "" && req.Header.Get("Content-Type") == "" {
+		req.Header.Set("Content-Type", "application/json")
+	}
+
+	start := time.Now()
+	resp, err := http.DefaultClient.Do(req)
+	ping := int(time.Since(start).Milliseconds())
+	if err != nil {
+		return &Result{Msg: err.Error()}
+	}
+	defer resp.Body.Close()
+
+	res := &Result{PingMs: ping}
+	if resp.TLS != nil && len(resp.TLS.PeerCertificates) > 0 {
+		res.CertExpiry = int(time.Until(resp.TLS.PeerCertificates[0].NotAfter).Hours() / 24)
+	} else {
+		res.CertExpiry = -1
+	}
+
+	switch m.Type {
+	case "keyword", "json":
+		raw, err := io.ReadAll(io.LimitReader(resp.Body, 4<<20))
+		if err != nil {
+			res.Msg = "read body: " + err.Error()
+			return res
+		}
+		if m.Type == "keyword" {
+			found := strings.Contains(string(raw), m.Keyword)
+			if m.KeywordInvert {
+				found = !found
+			}
+			res.Up = found
+			res.Msg = fmt.Sprintf("keyword %q %s", m.Keyword, map[bool]string{true: "found", false: "absent"}[found])
+			return res
+		}
+		return checkJSONBody(res, raw, m)
+	default:
+		res.Up = resp.StatusCode < 400
+		res.Msg = fmt.Sprintf("HTTP %d", resp.StatusCode)
+		return res
+	}
+}
+
+// checkJSONBody walks a dot path ("a.b.0.c") into decoded JSON and compares
+// the leaf to m.Expected.
+func checkJSONBody(res *Result, raw []byte, m *Monitor) *Result {
+	var v any
+	if err := json.Unmarshal(raw, &v); err != nil {
+		res.Msg = "invalid JSON: " + err.Error()
+		return res
+	}
+	for _, key := range strings.Split(m.JSONQuery, ".") {
+		switch n := v.(type) {
+		case map[string]any:
+			v = n[key]
+		case []any:
+			i, err := strconv.Atoi(key)
+			if err != nil || i < 0 || i >= len(n) {
+				res.Msg = "json path missing: " + m.JSONQuery
+				return res
+			}
+			v = n[i]
+		default:
+			res.Msg = "json path missing: " + m.JSONQuery
+			return res
+		}
+	}
+	got := fmt.Sprint(v)
+	res.Up = got == m.Expected
+	res.Msg = fmt.Sprintf("%s = %q (want %q)", m.JSONQuery, got, m.Expected)
+	return res
+}
+
+func checkTCP(ctx context.Context, m *Monitor) *Result {
+	host := hostOf(m)
+	if host == "" {
+		return &Result{Msg: "hostname or url required"}
+	}
+	addr := net.JoinHostPort(host, strconv.Itoa(m.Port))
+	start := time.Now()
+	conn, err := (&net.Dialer{}).DialContext(ctx, "tcp", addr)
+	if err != nil {
+		return &Result{Msg: err.Error()}
+	}
+	_ = conn.Close()
+	return &Result{Up: true, PingMs: int(time.Since(start).Milliseconds()), Msg: "port open"}
+}
+
+// checkPing sends one ICMP echo. Raw sockets need CAP_NET_RAW; the udp4
+// datagram path works unprivileged on Linux via ping_group_range.
+func checkPing(ctx context.Context, m *Monitor) *Result {
+	host := hostOf(m)
+	if host == "" {
+		return &Result{Msg: "hostname required"}
+	}
+	dst, err := net.ResolveIPAddr("ip4", host)
+	if err != nil {
+		if dst, err = net.ResolveIPAddr("ip6", host); err != nil {
+			return &Result{Msg: "resolve: " + err.Error()}
+		}
+	}
+
+	conn, err := icmp.ListenPacket("ip4:icmp", "0.0.0.0")
+	if err != nil {
+		conn, err = icmp.ListenPacket("udp4", "0.0.0.0")
+	}
+	if err != nil {
+		return &Result{Msg: "icmp unavailable (needs cap_net_raw or ping_group_range): " + err.Error()}
+	}
+	defer conn.Close()
+	_ = conn.SetDeadline(time.Now().Add(4 * time.Second))
+
+	wm := icmp.Message{Type: ipv4.ICMPTypeEcho, Code: 0, Body: &icmp.Echo{
+		ID:   1,
+		Seq:  1,
+		Data: []byte("dash"),
+	}}
+	wb, err := wm.Marshal(nil)
+	if err != nil {
+		return &Result{Msg: err.Error()}
+	}
+	start := time.Now()
+	var dstAddr net.Addr = dst
+	if _, err := conn.WriteTo(wb, dstAddr); err != nil {
+		return &Result{Msg: err.Error()}
+	}
+	rb := make([]byte, 1500)
+	for {
+		n, _, err := conn.ReadFrom(rb)
+		if err != nil {
+			return &Result{Msg: "no reply: " + err.Error()}
+		}
+		rm, err := icmp.ParseMessage(ipv4.ICMPTypeEchoReply.Protocol(), rb[:n])
+		if err != nil {
+			continue
+		}
+		if rm.Type == ipv4.ICMPTypeEchoReply {
+			return &Result{Up: true, PingMs: int(time.Since(start).Milliseconds()), Msg: "echo reply"}
+		}
+	}
+}
+
+func checkDNS(ctx context.Context, m *Monitor) *Result {
+	host := hostOf(m)
+	if host == "" {
+		return &Result{Msg: "hostname required"}
+	}
+	r := net.DefaultResolver
+	start := time.Now()
+	var answers []string
+	var err error
+	switch strings.ToUpper(m.DNSType) {
+	case "AAAA":
+		var ips []net.IP
+		ips, err = r.LookupIP(ctx, "ip6", host)
+		for _, ip := range ips {
+			answers = append(answers, ip.String())
+		}
+	case "MX":
+		var mxs []*net.MX
+		mxs, err = r.LookupMX(ctx, host)
+		for _, mx := range mxs {
+			answers = append(answers, mx.Host)
+		}
+	case "NS":
+		var nss []*net.NS
+		nss, err = r.LookupNS(ctx, host)
+		for _, ns := range nss {
+			answers = append(answers, ns.Host)
+		}
+	case "TXT":
+		answers, err = r.LookupTXT(ctx, host)
+	case "CNAME":
+		var c string
+		c, err = r.LookupCNAME(ctx, host)
+		if c != "" {
+			answers = []string{c}
+		}
+	default: // A
+		var ips []net.IP
+		ips, err = r.LookupIP(ctx, "ip4", host)
+		for _, ip := range ips {
+			answers = append(answers, ip.String())
+		}
+	}
+	ping := int(time.Since(start).Milliseconds())
+	if err != nil {
+		return &Result{Msg: err.Error()}
+	}
+	if len(answers) == 0 {
+		return &Result{Msg: "no records"}
+	}
+	res := &Result{Up: true, PingMs: ping, Msg: strings.Join(answers, ", ")}
+	if m.Expected != "" {
+		for _, a := range answers {
+			if strings.Contains(a, m.Expected) {
+				return res
+			}
+		}
+		res.Up = false
+		res.Msg = fmt.Sprintf("no record contains %q (got %s)", m.Expected, res.Msg)
+	}
+	return res
+}

apps/backend/internal/web/dist/index.html

@@ -12,8 +12,8 @@
         document.documentElement.dataset.theme = t === "light" ? "light" : "dark";
       } catch (e) {}
     </script>
-    <script type="module" crossorigin src="/assets/index-LtBmkZex.js"></script>
-    <link rel="stylesheet" crossorigin href="/assets/index-CoYED22n.css">
+    <script type="module" crossorigin src="/assets/index-WK6y87Wv.js"></script>
+    <link rel="stylesheet" crossorigin href="/assets/index-CHTjdWqd.css">
   </head>
   <body>
     <div id="root"></div>

apps/backend/internal/widget/adguard.go

@@ -11,7 +11,7 @@ import (
 // AdGuard Home REST API: GET /control/stats with HTTP basic auth.
 type adguard struct{}
 
-func init() { register(adguard{}) }
+func init() { Register(adguard{}) }
 
 func (adguard) Meta() Type {
 	return Type{

apps/backend/internal/widget/clock.go

@@ -10,7 +10,7 @@ import (
 // it and the add-widget dialog can offer it like any other type.
 type clock struct{}
 
-func init() { register(clock{}) }
+func init() { Register(clock{}) }
 
 func (clock) Meta() Type {
 	return Type{

apps/backend/internal/widget/immich.go

@@ -10,7 +10,7 @@ import (
 // Immich REST API: GET /api/statistics with an x-api-key header.
 type immich struct{}
 
-func init() { register(immich{}) }
+func init() { Register(immich{}) }
 
 func (immich) Meta() Type {
 	return Type{

apps/backend/internal/widget/pihole.go

@@ -11,7 +11,7 @@ import (
 // jarvis: v5 only for now — v6 (/api/...) lands when someone runs it.
 type pihole struct{}
 
-func init() { register(pihole{}) }
+func init() { Register(pihole{}) }
 
 func (pihole) Meta() Type {
 	return Type{

apps/backend/internal/widget/widget.go

@@ -40,7 +40,9 @@ type Fetcher interface {
 
 var registry = map[string]Fetcher{}
 
-func register(f Fetcher) { registry[f.Meta().Type] = f }
+// Register adds a fetcher — used by the api package for DB-backed widgets
+// (monitor/domain/system) that can't live in this leaf package.
+func Register(f Fetcher) { registry[f.Meta().Type] = f }
 
 // Get resolves a config.type to its fetcher.
 func Get(t string) (Fetcher, bool) {

apps/frontend/package.json

@@ -28,8 +28,10 @@
     "lucide-react": "^0.545.0",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
+    "recharts": "^3.10.1",
     "tailwind-merge": "^3.3.1",
-    "tw-animate-css": "^1.4.0"
+    "tw-animate-css": "^1.4.0",
+    "wouter": "^3.11.0"
   },
   "devDependencies": {
     "@tailwindcss/vite": "^4.1.13",

apps/frontend/src/App.tsx

@@ -1,12 +1,24 @@
 import { useEffect, useState } from "react";
-import { LayoutGrid, Moon, Plus, Search, Settings, Sun } from "lucide-react";
+import { Link, Route, useLocation } from "wouter";
+import { Activity, AlertTriangle, Globe, LayoutGrid, Megaphone, Moon, Plus, Search, Server, Settings, Sun } from "lucide-react";
 import { BoardProvider, useBoard } from "@/board/store";
 import { Board } from "@/board/Board";
 import { ServiceDialog } from "@/components/ServiceDialog";
 import { WidgetDialog } from "@/components/WidgetDialog";
 import { SettingsDialog } from "@/components/SettingsDialog";
 import { CommandPalette } from "@/components/CommandPalette";
+import { MonitorsPage } from "@/pages/MonitorsPage";
+import { MonitorDetailPage } from "@/pages/MonitorDetailPage";
+import { DomainsPage } from "@/pages/DomainsPage";
+import { DomainDetailPage } from "@/pages/DomainDetailPage";
+import { SystemsPage } from "@/pages/SystemsPage";
+import { SystemDetailPage } from "@/pages/SystemDetailPage";
+import { IncidentsPage } from "@/pages/IncidentsPage";
+import { StatusPagesPage } from "@/pages/StatusPagesPage";
+import { StatusPublicPage } from "@/pages/StatusPublicPage";
 import { Button } from "@/components/ui/button";
+import { cn } from "@/lib/utils";
+import { t, type Key } from "@/i18n";
 import type { Item } from "@/types";
 
 export default function App() {
@@ -17,8 +29,18 @@ export default function App() {
 	);
 }
 
+const NAV: { href: string; labelKey: Key; icon: typeof LayoutGrid }[] = [
+	{ href: "/", labelKey: "nav.board", icon: LayoutGrid },
+	{ href: "/monitors", labelKey: "nav.monitors", icon: Activity },
+	{ href: "/domains", labelKey: "nav.domains", icon: Globe },
+	{ href: "/systems", labelKey: "nav.systems", icon: Server },
+	{ href: "/incidents", labelKey: "nav.incidents", icon: AlertTriangle },
+	{ href: "/status", labelKey: "nav.status", icon: Megaphone },
+];
+
 function Shell() {
 	const board = useBoard();
+	const [loc] = useLocation();
 	const [settingsOpen, setSettingsOpen] = useState(false);
 	const [paletteOpen, setPaletteOpen] = useState(false);
 	const [svcOpen, setSvcOpen] = useState(false);
@@ -60,9 +82,27 @@ function Shell() {
 					</svg>
 					Dash
 				</div>
+				<nav className="ml-6 flex items-center gap-1" aria-label="Primary">
+					{NAV.map((n) => {
+						const active = n.href === "/" ? loc === "/" : loc.startsWith(n.href);
+						return (
+							<Link
+								key={n.href}
+								href={n.href}
+								className={cn(
+									"flex items-center gap-1.5 rounded-[7px] px-2.5 py-1.5 text-[12.5px] transition-colors",
+									active ? "bg-surface-hover text-text" : "text-text-faint hover:text-text",
+								)}
+							>
+								<n.icon size={13} strokeWidth={1.8} />
+								{t(n.labelKey)}
+							</Link>
+						);
+					})}
+				</nav>
 				<div className="ml-auto flex items-center gap-2">
 					<Button
-						variant="outline" aria-label="Search (⌘K)"
+						variant="outline" aria-label={t("header.search")}
 						onClick={() => setPaletteOpen(true)}
 						className="gap-1.5 text-text-faint"
 					>
@@ -70,32 +110,61 @@ function Shell() {
 						<kbd className="hidden font-mono text-[10px] min-[620px]:inline">⌘K</kbd>
 					</Button>
 					<Button
-						variant="outline" size="icon" aria-label="Settings"
+						variant="outline" size="icon" aria-label={t("header.settings")}
 						onClick={() => setSettingsOpen(true)}
 					>
 						<Settings size={15} strokeWidth={1.8} />
 					</Button>
 					<Button
-						variant="outline" size="icon" aria-label="Toggle theme"
+						variant="outline" size="icon" aria-label={t("header.theme")}
 						onClick={() => void board.setSetting("theme", board.theme === "dark" ? "light" : "dark")}
 					>
 						{board.theme === "dark" ? <Moon size={15} strokeWidth={1.8} /> : <Sun size={15} strokeWidth={1.8} />}
 					</Button>
 					<Button
-						variant="outline" aria-label="Add widget"
+						variant="outline" aria-label={t("header.addWidget")}
 						onClick={() => { setEditing(undefined); setWdgOpen(true); }}
 					>
 						<LayoutGrid size={13} strokeWidth={2} />
-						Widget
+						{t("header.widget")}
 					</Button>
 					<Button onClick={() => { setEditing(undefined); setSvcOpen(true); }}>
 						<Plus size={13} strokeWidth={2.2} />
-						Add service
+						{t("header.addService")}
 					</Button>
 				</div>
 			</header>
 
+			<Route path="/">
 				<Board onEditItem={openEditor} />
+			</Route>
+			<Route path="/monitors">
+				<MonitorsPage />
+			</Route>
+			<Route path="/monitors/:id">
+				{(p) => <MonitorDetailPage id={p.id} />}
+			</Route>
+			<Route path="/domains">
+				<DomainsPage />
+			</Route>
+			<Route path="/domains/:id">
+				{(p) => <DomainDetailPage id={p.id} />}
+			</Route>
+			<Route path="/systems">
+				<SystemsPage />
+			</Route>
+			<Route path="/systems/:id">
+				{(p) => <SystemDetailPage id={p.id} />}
+			</Route>
+			<Route path="/incidents">
+				<IncidentsPage />
+			</Route>
+			<Route path="/status">
+				<StatusPagesPage />
+			</Route>
+			<Route path="/status/:slug">
+				{(p) => <StatusPublicPage slug={p.slug} />}
+			</Route>
 
 			<ServiceDialog open={svcOpen} onOpenChange={setSvcOpen} item={editing?.kind === "service" ? editing : undefined} />
 			<WidgetDialog open={wdgOpen} onOpenChange={setWdgOpen} item={editing?.kind === "widget" ? editing : undefined} />

apps/frontend/src/components/CommandPalette.tsx

@@ -1,5 +1,6 @@
 import { useEffect, useMemo, useRef, useState } from "react";
-import { ArrowRight, Download, LayoutGrid, Moon, Plus, Settings, Sun } from "lucide-react";
+import { useLocation } from "wouter";
+import { Activity, AlertTriangle, ArrowRight, Download, Globe, LayoutGrid, Megaphone, Moon, Plus, Server, Settings, Sun } from "lucide-react";
 import { useBoard } from "@/board/store";
 import { hostOf, IconImg } from "@/board/primitives";
 import { rendererLabels, rendererList } from "@/renderers";
@@ -34,12 +35,19 @@ export function CommandPalette({
 	onSettings(): void;
 }) {
 	const board = useBoard();
+	const [, navigate] = useLocation();
 	const [query, setQuery] = useState("");
 	const [active, setActive] = useState(0);
 	const listRef = useRef<HTMLDivElement>(null);
 
 	const commands = useMemo<Command[]>(() => {
 		const cmds: Command[] = [
+			{ id: "nav-board", group: "Actions", glyph: LayoutGrid, label: "Go to Board", run: () => navigate("/") },
+			{ id: "nav-monitors", group: "Actions", glyph: Activity, label: "Go to Monitors", run: () => navigate("/monitors") },
+			{ id: "nav-domains", group: "Actions", glyph: Globe, label: "Go to Domains", run: () => navigate("/domains") },
+			{ id: "nav-systems", group: "Actions", glyph: Server, label: "Go to Systems", run: () => navigate("/systems") },
+			{ id: "nav-incidents", group: "Actions", glyph: AlertTriangle, label: "Go to Incidents", run: () => navigate("/incidents") },
+			{ id: "nav-status", group: "Actions", glyph: Megaphone, label: "Go to Status pages", run: () => navigate("/status") },
 			{ id: "add-service", group: "Actions", glyph: Plus, label: "Add service", hint: "new", run: onAddService },
 			{ id: "add-widget", group: "Actions", glyph: Plus, label: "Add widget", hint: "new", run: onAddWidget },
 			{ id: "settings", group: "Actions", glyph: Settings, label: "Open settings", run: onSettings },
@@ -73,7 +81,7 @@ export function CommandPalette({
 			}
 		}
 		return cmds;
-	}, [board.sections, board.theme, board.renderer, board.setSetting, onAddService, onAddWidget, onSettings]);
+	}, [board.sections, board.theme, board.renderer, board.setSetting, onAddService, onAddWidget, onSettings, navigate]);
 
 	const q = query.trim().toLowerCase();
 	const filtered = q

apps/frontend/src/components/DomainDialog.tsx

@@ -0,0 +1,121 @@
+import { useEffect, useState } from "react";
+import { api } from "@/api";
+import type { Domain, DomainInput } from "@/types";
+import { Button } from "@/components/ui/button";
+import {
+	Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogTitle,
+} from "@/components/ui/dialog";
+import { Input } from "@/components/ui/input";
+import { Label } from "@/components/ui/label";
+
+// Add/edit a tracked domain. The first WHOIS/DNS/TLS lookup runs on create —
+// expect a few seconds of spinner.
+export function DomainDialog({
+	open,
+	onOpenChange,
+	domain,
+	onSaved,
+}: {
+	open: boolean;
+	onOpenChange: (o: boolean) => void;
+	domain?: Domain | undefined;
+	onSaved: () => void;
+}) {
+	const editing = Boolean(domain);
+	const [name, setName] = useState("");
+	const [intervalH, setIntervalH] = useState("24");
+	const [alertDays, setAlertDays] = useState("30");
+	const [autoRenew, setAutoRenew] = useState(false);
+	const [notes, setNotes] = useState("");
+	const [busy, setBusy] = useState(false);
+	const [err, setErr] = useState("");
+
+	useEffect(() => {
+		if (!open) return;
+		setErr("");
+		setName(domain?.name ?? "");
+		setIntervalH(String(domain?.intervalH ?? 24));
+		setAlertDays(String(domain?.alertDaysBefore ?? 30));
+		setAutoRenew(domain?.autoRenew ?? false);
+		setNotes(domain?.notes ?? "");
+	}, [open, domain]);
+
+	async function submit() {
+		if (!name.trim()) return setErr("Domain is required"), undefined;
+		setBusy(true);
+		const body: DomainInput = {
+			name: name.trim(),
+			intervalH: Math.max(1, parseInt(intervalH) || 24),
+			alertDaysBefore: Math.max(0, parseInt(alertDays) || 30),
+			autoRenew,
+			notes,
+		};
+		try {
+			if (editing && domain) {
+				await api.PATCH("/api/domains/{id}", { params: { path: { id: domain.id! } }, body });
+			} else {
+				const { error } = await api.POST("/api/domains", { body });
+				if (error) throw new Error("create failed");
+			}
+			onSaved();
+			onOpenChange(false);
+		} catch (e) {
+			setErr(e instanceof Error ? e.message : "save failed");
+		} finally {
+			setBusy(false);
+		}
+	}
+
+	return (
+		<Dialog open={open} onOpenChange={onOpenChange}>
+			<DialogContent className="max-w-md">
+				<DialogHeader>
+					<DialogTitle>{editing ? "Edit domain" : "Track a domain"}</DialogTitle>
+					<DialogDescription>
+						WHOIS, DNS, TLS certificate, and host info — refreshed on your interval.
+					</DialogDescription>
+				</DialogHeader>
+
+				<div className="flex flex-col gap-4">
+					<div className="flex flex-col gap-1.5">
+						<Label htmlFor="dom-name">Domain</Label>
+						<Input id="dom-name" value={name} onChange={(e) => setName(e.target.value)}
+							placeholder="example.com" className="font-mono text-[12px]" autoFocus />
+					</div>
+
+					<div className="grid grid-cols-2 gap-3">
+						<div className="flex flex-col gap-1.5">
+							<Label htmlFor="dom-int">Refresh every (hours)</Label>
+							<Input id="dom-int" value={intervalH} onChange={(e) => setIntervalH(e.target.value)} className="font-mono text-[12px]" />
+						</div>
+						<div className="flex flex-col gap-1.5">
+							<Label htmlFor="dom-alert">Alert days before expiry</Label>
+							<Input id="dom-alert" value={alertDays} onChange={(e) => setAlertDays(e.target.value)} className="font-mono text-[12px]" />
+						</div>
+					</div>
+
+					<label className="flex items-center gap-2 text-[12.5px] text-text-dim">
+						<input type="checkbox" checked={autoRenew} onChange={(e) => setAutoRenew(e.target.checked)} />
+						Auto-renew enabled at the registrar
+					</label>
+
+					<div className="flex flex-col gap-1.5">
+						<Label htmlFor="dom-notes">Notes (optional)</Label>
+						<Input id="dom-notes" value={notes} onChange={(e) => setNotes(e.target.value)} />
+					</div>
+
+					{err ? <p className="text-[12px] text-destructive">{err}</p> : null}
+				</div>
+
+				<DialogFooter className="items-center">
+					<Button type="button" variant="outline" onClick={() => onOpenChange(false)} disabled={busy}>
+						Cancel
+					</Button>
+					<Button type="button" onClick={() => void submit()} disabled={busy}>
+						{busy ? "Looking up…" : editing ? "Save" : "Track domain"}
+					</Button>
+				</DialogFooter>
+			</DialogContent>
+		</Dialog>
+	);
+}

apps/frontend/src/components/MonitorDialog.tsx

@@ -0,0 +1,244 @@
+import { useEffect, useState } from "react";
+import { api } from "@/api";
+import type { Monitor, MonitorInput } from "@/types";
+import { Button } from "@/components/ui/button";
+import {
+	Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogTitle,
+} from "@/components/ui/dialog";
+import { Input } from "@/components/ui/input";
+import { Label } from "@/components/ui/label";
+import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";
+
+const TYPES = ["http", "tcp", "ping", "dns", "keyword", "json", "push"] as const;
+type MonType = (typeof TYPES)[number];
+
+// One dialog for add + edit. The type picker drives which fields matter —
+// same pattern as ServiceDialog.
+export function MonitorDialog({
+	open,
+	onOpenChange,
+	monitor,
+	onSaved,
+}: {
+	open: boolean;
+	onOpenChange: (o: boolean) => void;
+	monitor?: Monitor | undefined;
+	onSaved: () => void;
+}) {
+	const editing = Boolean(monitor);
+	const [f, setF] = useState<Record<string, string>>({});
+	const [busy, setBusy] = useState(false);
+	const [err, setErr] = useState("");
+
+	useEffect(() => {
+		if (!open) return;
+		setErr("");
+		setF({
+			name: monitor?.name ?? "",
+			type: monitor?.type ?? "http",
+			url: monitor?.url ?? "",
+			hostname: monitor?.hostname ?? "",
+			port: monitor?.port ? String(monitor.port) : "",
+			method: monitor?.method ?? "GET",
+			keyword: monitor?.keyword ?? "",
+			keywordInvert: monitor?.keywordInvert ? "1" : "",
+			jsonQuery: monitor?.jsonQuery ?? "",
+			expected: monitor?.expected ?? "",
+			dnsType: monitor?.dnsType ?? "A",
+			intervalS: String(monitor?.intervalS ?? 60),
+			timeoutS: String(monitor?.timeoutS ?? 10),
+			retries: String(monitor?.retries ?? 0),
+			notes: monitor?.notes ?? "",
+		});
+	}, [open, monitor]);
+
+	const set = (k: string) => (e: React.ChangeEvent<HTMLInputElement>) =>
+		setF((s) => ({ ...s, [k]: e.target.value }));
+	// SAFETY: f.type only ever receives values from the TYPES select or a
+	// persisted monitor row, both constrained to MonType.
+	const type = (f.type || "http") as MonType;
+
+	async function submit() {
+		if (!f.name?.trim()) return setErr("Name is required"), undefined;
+		if (type !== "push" && type !== "tcp" && type !== "ping" && type !== "dns" && !f.url?.trim())
+			return setErr("URL is required"), undefined;
+		if ((type === "tcp" || type === "ping" || type === "dns") && !f.hostname?.trim() && !f.url?.trim())
+			return setErr("Hostname is required"), undefined;
+		setBusy(true);
+		const body: MonitorInput = {
+			name: f.name.trim(),
+			type,
+			url: f.url?.trim() ?? "",
+			hostname: f.hostname?.trim() ?? "",
+			port: parseInt(f.port ?? "0") || 0,
+			method: f.method || "GET",
+			keyword: f.keyword ?? "",
+			keywordInvert: f.keywordInvert === "1",
+			jsonQuery: f.jsonQuery ?? "",
+			expected: f.expected ?? "",
+			dnsType: f.dnsType || "A",
+			intervalS: Math.max(10, parseInt(f.intervalS ?? "60") || 60),
+			timeoutS: Math.max(1, parseInt(f.timeoutS ?? "10") || 10),
+			retries: Math.max(0, parseInt(f.retries ?? "0") || 0),
+			notes: f.notes ?? "",
+		};
+		try {
+			if (editing && monitor) {
+				await api.PATCH("/api/monitors/{id}", { params: { path: { id: monitor.id! } }, body });
+			} else {
+				await api.POST("/api/monitors", { body });
+			}
+			onSaved();
+			onOpenChange(false);
+		} catch {
+			setErr("save failed");
+		} finally {
+			setBusy(false);
+		}
+	}
+
+	return (
+		<Dialog open={open} onOpenChange={onOpenChange}>
+			<DialogContent className="max-w-md">
+				<DialogHeader>
+					<DialogTitle>{editing ? "Edit monitor" : "New monitor"}</DialogTitle>
+					<DialogDescription>Uptime check on a schedule.</DialogDescription>
+				</DialogHeader>
+
+				<div className="flex max-h-[60vh] flex-col gap-4 overflow-y-auto pr-1">
+					<div className="grid grid-cols-[1fr_130px] gap-3">
+						<div className="flex flex-col gap-1.5">
+							<Label htmlFor="mon-name">Name</Label>
+							<Input id="mon-name" value={f.name ?? ""} onChange={set("name")} placeholder="Plex" autoFocus />
+						</div>
+						<div className="flex flex-col gap-1.5">
+							<Label>Type</Label>
+							<Select value={type} onValueChange={(v) => setF((s) => ({ ...s, type: v }))}>
+								<SelectTrigger><SelectValue /></SelectTrigger>
+								<SelectContent>
+									{TYPES.map((t) => <SelectItem key={t} value={t}>{t}</SelectItem>)}
+								</SelectContent>
+							</Select>
+						</div>
+					</div>
+
+					{(type === "http" || type === "keyword" || type === "json") && (
+						<>
+							<div className="grid grid-cols-[1fr_110px] gap-3">
+								<div className="flex flex-col gap-1.5">
+									<Label htmlFor="mon-url">URL</Label>
+									<Input id="mon-url" value={f.url ?? ""} onChange={set("url")} placeholder="https://plex.local" className="font-mono text-[12px]" />
+								</div>
+								<div className="flex flex-col gap-1.5">
+									<Label>Method</Label>
+									<Select value={f.method || "GET"} onValueChange={(v) => setF((s) => ({ ...s, method: v }))}>
+										<SelectTrigger><SelectValue /></SelectTrigger>
+										<SelectContent>
+											{["GET", "HEAD", "POST"].map((m) => <SelectItem key={m} value={m}>{m}</SelectItem>)}
+										</SelectContent>
+									</Select>
+								</div>
+							</div>
+							{type === "keyword" && (
+								<div className="flex flex-col gap-1.5">
+									<Label htmlFor="mon-kw">Keyword</Label>
+									<Input id="mon-kw" value={f.keyword ?? ""} onChange={set("keyword")} placeholder="text that must appear" className="font-mono text-[12px]" />
+									<label className="flex items-center gap-2 text-[12px] text-text-dim">
+										<input type="checkbox" checked={f.keywordInvert === "1"}
+											onChange={(e) => setF((s) => ({ ...s, keywordInvert: e.target.checked ? "1" : "" }))} />
+										Invert (down when found)
+									</label>
+								</div>
+							)}
+							{type === "json" && (
+								<div className="grid grid-cols-2 gap-3">
+									<div className="flex flex-col gap-1.5">
+										<Label htmlFor="mon-jq">JSON path</Label>
+										<Input id="mon-jq" value={f.jsonQuery ?? ""} onChange={set("jsonQuery")} placeholder="data.status" className="font-mono text-[12px]" />
+									</div>
+									<div className="flex flex-col gap-1.5">
+										<Label htmlFor="mon-exp">Expected</Label>
+										<Input id="mon-exp" value={f.expected ?? ""} onChange={set("expected")} placeholder="ok" className="font-mono text-[12px]" />
+									</div>
+								</div>
+							)}
+						</>
+					)}
+
+					{(type === "tcp" || type === "ping" || type === "dns") && (
+						<div className="grid grid-cols-[1fr_110px] gap-3">
+							<div className="flex flex-col gap-1.5">
+								<Label htmlFor="mon-host">Hostname</Label>
+								<Input id="mon-host" value={f.hostname ?? ""} onChange={set("hostname")} placeholder="nas.local" className="font-mono text-[12px]" />
+							</div>
+							{type === "tcp" ? (
+								<div className="flex flex-col gap-1.5">
+									<Label htmlFor="mon-port">Port</Label>
+									<Input id="mon-port" value={f.port ?? ""} onChange={set("port")} placeholder="443" className="font-mono text-[12px]" />
+								</div>
+							) : type === "dns" ? (
+								<div className="flex flex-col gap-1.5">
+									<Label>Record</Label>
+									<Select value={f.dnsType || "A"} onValueChange={(v) => setF((s) => ({ ...s, dnsType: v }))}>
+										<SelectTrigger><SelectValue /></SelectTrigger>
+										<SelectContent>
+											{["A", "AAAA", "CNAME", "MX", "NS", "TXT"].map((t) => <SelectItem key={t} value={t}>{t}</SelectItem>)}
+										</SelectContent>
+									</Select>
+								</div>
+							) : <div />}
+						</div>
+					)}
+					{type === "dns" && (
+						<div className="flex flex-col gap-1.5">
+							<Label htmlFor="mon-dnsexp">Expected record contains (optional)</Label>
+							<Input id="mon-dnsexp" value={f.expected ?? ""} onChange={set("expected")} className="font-mono text-[12px]" />
+						</div>
+					)}
+
+					{type === "push" && (
+						<p className="rounded-[8px] border border-border bg-surface px-3 py-2 text-[12px] text-text-dim">
+							After saving, your jobs call the shown push URL on a schedule.
+							If it goes quiet for 2× the interval, the monitor flips down.
+						</p>
+					)}
+
+					<div className="grid grid-cols-3 gap-3">
+						<div className="flex flex-col gap-1.5">
+							<Label htmlFor="mon-int">Interval (s)</Label>
+							<Input id="mon-int" value={f.intervalS ?? "60"} onChange={set("intervalS")} className="font-mono text-[12px]" />
+						</div>
+						<div className="flex flex-col gap-1.5">
+							<Label htmlFor="mon-to">Timeout (s)</Label>
+							<Input id="mon-to" value={f.timeoutS ?? "10"} onChange={set("timeoutS")} className="font-mono text-[12px]" />
+						</div>
+						<div className="flex flex-col gap-1.5">
+							<Label htmlFor="mon-re">Retries</Label>
+							<Input id="mon-re" value={f.retries ?? "0"} onChange={set("retries")} className="font-mono text-[12px]" />
+						</div>
+					</div>
+
+					{monitor?.pushToken ? (
+						<div className="flex flex-col gap-1.5">
+							<Label>Push URL</Label>
+							<code className="rounded-[8px] border border-border bg-surface px-3 py-2 font-mono text-[11px] text-text-dim">
+								{location.origin}/api/push/{monitor.pushToken}
+							</code>
+						</div>
+					) : null}
+
+					{err ? <p className="text-[12px] text-destructive">{err}</p> : null}
+				</div>
+
+				<DialogFooter className="items-center">
+					<Button type="button" variant="outline" onClick={() => onOpenChange(false)} disabled={busy}>
+						Cancel
+					</Button>
+					<Button type="button" onClick={() => void submit()} disabled={busy}>
+						{busy ? "Saving…" : editing ? "Save" : "Add monitor"}
+					</Button>
+				</DialogFooter>
+			</DialogContent>
+		</Dialog>
+	);
+}

apps/frontend/src/components/ServiceDialog.tsx

@@ -1,6 +1,7 @@
 import { useEffect, useRef, useState } from "react";
 import { Plus, Trash2, Upload, X } from "lucide-react";
 import { useBoard } from "@/board/store";
+import { api } from "@/api";
 import type { Item, UrlInput } from "@/types";
 import { Button } from "@/components/ui/button";
 import {
@@ -33,6 +34,7 @@ export function ServiceDialog({
 	const [icon, setIcon] = useState("");
 	const [urls, setUrls] = useState<UrlInput[]>([{ url: "", label: "local" }]);
 	const [sectionId, setSectionId] = useState("");
+	const [alsoMonitor, setAlsoMonitor] = useState(false);
 	const [busy, setBusy] = useState(false);
 	const [err, setErr] = useState("");
 	const fileRef = useRef<HTMLInputElement>(null);
@@ -48,6 +50,7 @@ export function ServiceDialog({
 				: [{ url: "", label: "local" }],
 		);
 		setSectionId(item?.sectionId ?? board.sections[0]?.id ?? "");
+		setAlsoMonitor(false);
 	}, [open, item, board.sections]);
 
 	const setUrl = (i: number, patch: Partial<UrlInput>) =>
@@ -81,6 +84,12 @@ export function ServiceDialog({
 					urls: cleanUrls,
 				});
 				if (created && file) await board.uploadIcon(created.id, file);
+				if (alsoMonitor && cleanUrls[0]) {
+					// Uptime check on the primary URL — appears under /monitors.
+					await api.POST("/api/monitors", {
+						body: { name: name.trim(), type: "http", url: cleanUrls[0].url },
+					});
+				}
 			}
 			onOpenChange(false);
 		} catch (e) {
@@ -193,6 +202,17 @@ export function ServiceDialog({
 						<p className="text-[11px] text-text-faint">URL or uploaded file; blank shows a letter tile.</p>
 					</div>
 
+					{!editing && (
+						<label className="flex items-center gap-2 text-[12.5px] text-text-dim">
+							<input
+								type="checkbox"
+								checked={alsoMonitor}
+								onChange={(e) => setAlsoMonitor(e.target.checked)}
+							/>
+							Also create an uptime monitor for the first URL
+						</label>
+					)}
+
 					{err ? <p className="text-[12px] text-destructive">{err}</p> : null}
 				</div>
 

apps/frontend/src/components/SettingsDialog.tsx

@@ -1,12 +1,14 @@
-import { useRef, useState } from "react";
-import { Download, Upload } from "lucide-react";
+import { useEffect, useRef, useState } from "react";
+import { Bell, Download, Upload } from "lucide-react";
 import { useBoard } from "@/board/store";
+import { api } from "@/api";
 import { rendererDescriptions, rendererLabels, rendererList } from "@/renderers";
 import { cn } from "@/lib/utils";
 import { Button } from "@/components/ui/button";
 import {
 	Dialog, DialogContent, DialogDescription, DialogHeader, DialogTitle,
 } from "@/components/ui/dialog";
+import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";
 
@@ -14,6 +16,23 @@ export function SettingsDialog({ open, onOpenChange }: { open: boolean; onOpenCh
 	const board = useBoard();
 	const fileRef = useRef<HTMLInputElement>(null);
 	const [msg, setMsg] = useState("");
+	const [webhook, setWebhook] = useState("");
+	const [webhookMsg, setWebhookMsg] = useState("");
+
+	useEffect(() => {
+		if (!open) return;
+		void api.GET("/api/settings").then(({ data }) => {
+			const v = data?.notify_webhook;
+			setWebhook(typeof v === "string" ? v : "");
+			setWebhookMsg("");
+		});
+	}, [open]);
+
+	async function saveWebhook() {
+		setWebhookMsg("");
+		await api.PUT("/api/settings", { body: { notify_webhook: webhook.trim() } });
+		setWebhookMsg("saved");
+	}
 
 	async function exportJson() {
 		const res = await fetch("/api/export");
@@ -28,11 +47,22 @@ export function SettingsDialog({ open, onOpenChange }: { open: boolean; onOpenCh
 
 	async function importJson(file: File) {
 		setMsg("");
-		const res = await fetch("/api/import", { method: "POST", body: file });
+		// Dash exports are JSON with {version, sections}; anything else
+		// (Homepage/Homarr/Dashy) goes to the external importer for sniffing.
+		let target = "/api/import/external";
+		try {
+			const j: unknown = JSON.parse(await file.text());
+			if (j !== null && typeof j === "object" && "version" in j && "sections" in j) {
+				target = "/api/import";
+			}
+		} catch { /* not JSON — external importer handles YAML */ }
+		const res = await fetch(target, { method: "POST", body: file });
 		if (res.ok) {
 			location.reload(); // import replaces state; a reload re-syncs everything
 		} else {
-			setMsg("Import failed — not a Dash export?");
+			// SAFETY: error responses always carry {error: string} per openapi.yaml Error schema.
+			const body = (await res.json().catch(() => null)) as { error?: string } | null;
+			setMsg(body?.error ?? "Import failed");
 		}
 	}
 
@@ -82,6 +112,38 @@ export function SettingsDialog({ open, onOpenChange }: { open: boolean; onOpenCh
 						</Select>
 					</div>
 
+					<div className="flex flex-col gap-1.5">
+						<Label htmlFor="notify-webhook">Notification webhook</Label>
+						<div className="flex gap-2">
+							<Input
+								id="notify-webhook"
+								value={webhook}
+								onChange={(e) => { setWebhook(e.target.value); setWebhookMsg(""); }}
+								placeholder="https://ntfy.sh/dash or Slack/Discord hook"
+								className="font-mono text-[12px]"
+							/>
+							<Button type="button" variant="outline" size="sm" onClick={() => void saveWebhook()}>
+								Save
+							</Button>
+							<Button
+								type="button" variant="outline" size="icon" aria-label="Send test notification"
+								disabled={!webhook.trim()}
+								onClick={() => {
+									setWebhookMsg("");
+									void api.POST("/api/notify/test").then(({ error }) =>
+										setWebhookMsg(error ? "failed" : "sent"));
+								}}
+							>
+								<Bell size={12} />
+							</Button>
+						</div>
+						<p className="text-[11px] text-text-faint">
+							Monitor up/down flips and domain/certificate expiry post JSON here.
+							Works with Slack, Discord, ntfy, or any JSON receiver.
+						</p>
+						{webhookMsg ? <p className="text-[11px] text-text-faint">{webhookMsg}</p> : null}
+					</div>
+
 					<div className="flex gap-2 pt-1">
 						<Button type="button" variant="outline" size="sm" onClick={() => void exportJson()}>
 							<Download size={12} /> Export JSON
@@ -90,7 +152,7 @@ export function SettingsDialog({ open, onOpenChange }: { open: boolean; onOpenCh
 							<Upload size={12} /> Import
 						</Button>
 						<input
-							ref={fileRef} type="file" accept="application/json" className="hidden"
+							ref={fileRef} type="file" accept=".json,.yml,.yaml" className="hidden"
 							onChange={(e) => {
 								const f = e.target.files?.[0];
 								if (f) void importJson(f);
@@ -98,6 +160,7 @@ export function SettingsDialog({ open, onOpenChange }: { open: boolean; onOpenCh
 							}}
 						/>
 					</div>
+					<p className="text-[11px] text-text-faint">Import accepts Dash exports plus Homepage, Homarr, and Dashy configs.</p>
 					{msg ? <p className="text-[12px] text-destructive">{msg}</p> : null}
 				</div>
 			</DialogContent>

apps/frontend/src/components/WidgetDialog.tsx

@@ -1,5 +1,6 @@
 import { useEffect, useState } from "react";
 import { useBoard } from "@/board/store";
+import { api } from "@/api";
 import type { Item } from "@/types";
 import { Button } from "@/components/ui/button";
 import {
@@ -31,6 +32,9 @@ export function WidgetDialog({
 	const [name, setName] = useState("");
 	const [sectionId, setSectionId] = useState("");
 	const [values, setValues] = useState<Record<string, string>>({});
+	const [monitors, setMonitors] = useState<{ id?: string; name?: string }[]>([]);
+	const [domains, setDomains] = useState<{ id?: string; name?: string }[]>([]);
+	const [systems, setSystems] = useState<{ id?: string; name?: string }[]>([]);
 	const [busy, setBusy] = useState(false);
 	const [err, setErr] = useState("");
 
@@ -42,6 +46,9 @@ export function WidgetDialog({
 			.then((r) => r.json() as Promise<WidgetType[]>)
 			.then(setTypes)
 			.catch(() => setTypes([]));
+		void api.GET("/api/monitors").then(({ data }) => setMonitors(data ?? []));
+		void api.GET("/api/domains").then(({ data }) => setDomains(data ?? []));
+		void api.GET("/api/systems").then(({ data }) => setSystems(data ?? []));
 
 		const cfg = item?.config ?? null;
 		setType(cfg && typeof cfg.type === "string" ? cfg.type : "");
@@ -141,6 +148,19 @@ export function WidgetDialog({
 							<Label htmlFor={`wdg-${f.key}`}>
 								{f.label}{f.required ? "" : " (optional)"}
 							</Label>
+							{f.key === "monitorId" || f.key === "domainId" || f.key === "systemId" ? (
+								<Select
+									value={values[f.key] ?? ""}
+									onValueChange={(v) => setValues((s) => ({ ...s, [f.key]: v }))}
+								>
+									<SelectTrigger><SelectValue placeholder="Pick one…" /></SelectTrigger>
+									<SelectContent>
+										{(f.key === "monitorId" ? monitors : f.key === "domainId" ? domains : systems).map((m) => (
+											<SelectItem key={m.id} value={m.id ?? ""}>{m.name}</SelectItem>
+										))}
+									</SelectContent>
+								</Select>
+							) : (
 								<Input
 									id={`wdg-${f.key}`}
 									type={f.secret ? "password" : "text"}
@@ -149,6 +169,7 @@ export function WidgetDialog({
 									onChange={(e) => setValues((v) => ({ ...v, [f.key]: e.target.value }))}
 									className="font-mono text-[12px]"
 								/>
+							)}
 						</div>
 					))}
 

apps/frontend/src/i18n/en.ts

@@ -0,0 +1,27 @@
+// English source strings. Flat keys, dot-separated namespaces.
+// Add a locale by copying this file — keys must match exactly.
+export const en = {
+	"nav.board": "Board",
+	"nav.monitors": "Monitors",
+	"nav.domains": "Domains",
+	"nav.systems": "Systems",
+	"nav.incidents": "Incidents",
+	"nav.status": "Status",
+
+	"header.search": "Search (⌘K)",
+	"header.settings": "Settings",
+	"header.theme": "Toggle theme",
+	"header.addWidget": "Add widget",
+	"header.addService": "Add service",
+	"header.widget": "Widget",
+
+	"common.add": "Add",
+	"common.edit": "Edit",
+	"common.delete": "Delete",
+	"common.cancel": "Cancel",
+	"common.save": "Save",
+	"common.test": "Test",
+	"common.loading": "Loading…",
+} as const;
+
+export type Key = keyof typeof en;

apps/frontend/src/i18n/index.ts

@@ -0,0 +1,13 @@
+import { en, type Key } from "@/i18n/en";
+
+export type { Key } from "@/i18n/en";
+
+// i18n seam: dictionaries are plain objects keyed by dotted names. `t` is a
+// typed lookup that falls back to the key itself, so a missing translation
+// renders the key — loud in dev, never a crash. Locales beyond `en` plug in
+// here later (settings key + lazy import); nothing else changes.
+const dict: Record<Key, string> = en;
+
+export function t(key: Key): string {
+	return dict[key] ?? key;
+}

apps/frontend/src/pages/DomainDetailPage.tsx

@@ -0,0 +1,222 @@
+import { useCallback, useEffect, useState } from "react";
+import { Link } from "wouter";
+import { ArrowLeft, Pause, Play, RefreshCw, Shield, Trash2 } from "lucide-react";
+import { api } from "@/api";
+import type { DomainCheck, DomainView } from "@/types";
+import { DomainDialog } from "@/components/DomainDialog";
+import { Button } from "@/components/ui/button";
+import { cn } from "@/lib/utils";
+
+function Row({ k, v, mono }: { k: string; v: React.ReactNode; mono?: boolean }) {
+	if (v === undefined || v === null || v === "") return null;
+	return (
+		<div className="flex items-baseline justify-between gap-4 border-b border-border/50 px-4 py-2 last:border-0">
+			<span className="shrink-0 font-mono text-[10.5px] uppercase tracking-[0.08em] text-text-faint">{k}</span>
+			<span className={cn("truncate text-right text-[12px] text-text", mono && "font-mono text-[11px]")}>{v}</span>
+		</div>
+	);
+}
+
+function Section({ title, children }: { title: string; children: React.ReactNode }) {
+	return (
+		<div className="overflow-hidden rounded-[10px] border border-border bg-surface">
+			<h2 className="border-b border-border px-4 py-2.5 font-mono text-[10.5px] uppercase tracking-[0.12em] text-text-faint">{title}</h2>
+			<div>{children}</div>
+		</div>
+	);
+}
+
+function fmtDate(iso: string | null | undefined) {
+	if (!iso) return "—";
+	return new Date(iso).toLocaleDateString(undefined, { year: "numeric", month: "short", day: "numeric" });
+}
+
+export function DomainDetailPage({ id }: { id: string }) {
+	const [d, setD] = useState<DomainView | null>(null);
+	const [checks, setChecks] = useState<DomainCheck[]>([]);
+	const [dlgOpen, setDlgOpen] = useState(false);
+	const [refreshing, setRefreshing] = useState(false);
+
+	const load = useCallback(async () => {
+		const [{ data: dv }, { data: ck }] = await Promise.all([
+			api.GET("/api/domains/{id}", { params: { path: { id } } }),
+			api.GET("/api/domains/{id}/checks", { params: { path: { id } } }),
+		]);
+		if (dv) setD(dv);
+		if (ck) setChecks(ck);
+	}, [id]);
+
+	useEffect(() => { void load(); }, [load]);
+
+	if (!d) return <main className="mx-auto max-w-5xl px-7 py-8 text-[13px] text-text-faint">Loading…</main>;
+
+	const expiring = d.expiring || (d.daysUntilExpiry ?? Infinity) < 0;
+
+	return (
+		<main className="mx-auto w-full max-w-5xl px-7 py-8">
+			<Link href="/domains" className="mb-4 inline-flex items-center gap-1.5 text-[12px] text-text-faint hover:text-text">
+				<ArrowLeft size={12} /> Domains
+			</Link>
+
+			<div className="mb-6 flex items-start justify-between">
+				<div className="flex items-center gap-3">
+					{d.faviconUrl ? <img src={d.faviconUrl} alt="" className="size-8 rounded-[7px]" /> : null}
+					<div>
+						<h1 className="text-[17px] font-semibold tracking-tight">{d.name}</h1>
+						<p className="mt-0.5 flex items-center gap-2 font-mono text-[11px] text-text-faint">
+							{d.tld ? `.${d.tld}` : ""}
+							{d.dnssec === "signed" && <span className="flex items-center gap-1 text-up"><Shield size={10} /> dnssec</span>}
+							{d.transferLock ? <span>transfer-locked</span> : null}
+							{d.privacyEnabled ? <span>whois privacy</span> : null}
+							{d.autoRenew ? <span>auto-renew</span> : null}
+						</p>
+					</div>
+				</div>
+				<div className="flex gap-2">
+					<Button variant="outline" size="sm" disabled={refreshing}
+						onClick={() => {
+							setRefreshing(true);
+							void api.POST("/api/domains/{id}/refresh", { params: { path: { id } } })
+								.then(load).finally(() => setRefreshing(false));
+						}}>
+						<RefreshCw size={12} className={cn(refreshing && "animate-spin")} /> Refresh
+					</Button>
+					<Button variant="outline" size="sm"
+						onClick={() => void api.PATCH("/api/domains/{id}", { params: { path: { id } }, body: { active: !d.active } }).then(load)}>
+						{d.active ? <Pause size={12} /> : <Play size={12} />} {d.active ? "Pause" : "Resume"}
+					</Button>
+					<Button variant="outline" size="sm" onClick={() => setDlgOpen(true)}>Edit</Button>
+					<Button variant="outline" size="sm" aria-label="Delete"
+						onClick={() => {
+							if (confirm(`Stop tracking "${d.name}"?`)) {
+								void api.DELETE("/api/domains/{id}", { params: { path: { id } } }).then(() => { location.href = "/domains"; });
+							}
+						}}>
+						<Trash2 size={12} />
+					</Button>
+				</div>
+			</div>
+
+			{d.lookupError ? (
+				<p className="mb-4 rounded-[8px] border border-down/40 bg-down/10 px-3 py-2 font-mono text-[11px] text-down">
+					lookup: {d.lookupError}
+				</p>
+			) : null}
+
+			<div className="mb-6 grid grid-cols-4 gap-3 max-[720px]:grid-cols-2">
+				<div className="rounded-[10px] border border-border bg-surface px-4 py-3">
+					<div className="font-mono text-[10px] uppercase tracking-[0.1em] text-text-faint">Domain expires</div>
+					<div className={cn("mt-1 font-mono text-[17px] font-medium", expiring && "text-down")}>
+						{d.daysUntilExpiry !== null && d.daysUntilExpiry !== undefined
+							? (d.daysUntilExpiry < 0 ? "expired" : `${d.daysUntilExpiry}d`)
+							: "—"}
+					</div>
+					<div className="font-mono text-[10px] text-text-faint">{fmtDate(d.expiryDate)}</div>
+				</div>
+				<div className="rounded-[10px] border border-border bg-surface px-4 py-3">
+					<div className="font-mono text-[10px] uppercase tracking-[0.1em] text-text-faint">SSL expires</div>
+					<div className={cn("mt-1 font-mono text-[17px] font-medium", d.sslExpiring && "text-down")}>
+						{d.sslDaysUntilExpiry !== null && d.sslDaysUntilExpiry !== undefined
+							? (d.sslDaysUntilExpiry < 0 ? "expired" : `${d.sslDaysUntilExpiry}d`)
+							: "—"}
+					</div>
+					<div className="font-mono text-[10px] text-text-faint">{fmtDate(d.sslValidTo)}</div>
+				</div>
+				<div className="rounded-[10px] border border-border bg-surface px-4 py-3">
+					<div className="font-mono text-[10px] uppercase tracking-[0.1em] text-text-faint">Registrar</div>
+					<div className="mt-1 truncate text-[13px] font-medium">{d.registrarName || "—"}</div>
+					<div className="font-mono text-[10px] text-text-faint">{d.caProvider || "—"}</div>
+				</div>
+				<div className="rounded-[10px] border border-border bg-surface px-4 py-3">
+					<div className="font-mono text-[10px] uppercase tracking-[0.1em] text-text-faint">Providers</div>
+					<div className="mt-1 truncate text-[13px] font-medium">{d.dnsProvider || "—"}</div>
+					<div className="font-mono text-[10px] text-text-faint">{d.hostingProvider || d.emailProvider || "—"}</div>
+				</div>
+			</div>
+
+			<div className="grid grid-cols-2 gap-3 max-[820px]:grid-cols-1">
+				<Section title="Registration">
+					<Row k="Created" v={fmtDate(d.creationDate)} />
+					<Row k="Updated" v={fmtDate(d.updatedDate)} />
+					<Row k="Registrar" v={d.registrarName} />
+					<Row k="IANA ID" v={d.registrarId} mono />
+					<Row k="Registry ID" v={d.registryDomainId} mono />
+					<Row k="Registrant" v={[d.registrantName, d.registrantOrg].filter(Boolean).join(" / ")} />
+					<Row k="Country" v={d.registrantCountry} />
+					<Row k="Abuse" v={d.abuseEmail} mono />
+					{d.statuses && d.statuses.length > 0 ? <Row k="Status" v={d.statuses.join(", ")} mono /> : null}
+				</Section>
+
+				<Section title="DNS">
+					{d.nameServers?.map((n) => <Row key={n} k="NS" v={n} mono />)}
+					{d.mxRecords?.map((m) => <Row key={m} k="MX" v={m} mono />)}
+					{d.ipv4?.map((a) => <Row key={a} k="A" v={a} mono />)}
+					{d.ipv6?.map((a) => <Row key={a} k="AAAA" v={a} mono />)}
+					{d.cname ? <Row k="CNAME" v={d.cname} mono /> : null}
+					{d.txtRecords?.slice(0, 4).map((t, i) => <Row key={i} k="TXT" v={t.length > 60 ? t.slice(0, 60) + "…" : t} mono />)}
+					{d.dnsProvider ? <Row k="DNS provider" v={d.dnsProvider} /> : null}
+					{d.emailProvider ? <Row k="Email" v={d.emailProvider} /> : null}
+				</Section>
+
+				<Section title="TLS certificate">
+					<Row k="Issuer" v={d.sslIssuer} />
+					<Row k="CA" v={d.caProvider} />
+					<Row k="Valid" v={`${fmtDate(d.sslValidFrom)} → ${fmtDate(d.sslValidTo)}`} mono />
+					<Row k="Subject" v={d.sslSubject} mono />
+					<Row k="Key" v={d.sslKeySize ? `${d.sslKeySize} bit` : ""} mono />
+					<Row k="Algorithm" v={d.sslSigAlgo} mono />
+					{d.sslAltNames && d.sslAltNames.length > 0 ? (
+						<Row k="SANs" v={d.sslAltNames.slice(0, 5).join(", ") + (d.sslAltNames.length > 5 ? ` +${d.sslAltNames.length - 5}` : "")} mono />
+					) : null}
+					<Row k="SHA-256" v={d.sslFingerprint ? d.sslFingerprint.slice(0, 29) + "…" : ""} mono />
+				</Section>
+
+				<Section title="Host">
+					<Row k="Location" v={[d.hostCity, d.hostRegion, d.hostCountry].filter(Boolean).join(", ")} />
+					<Row k="ISP" v={d.hostIsp} />
+					<Row k="Org" v={d.hostOrg} />
+					<Row k="AS" v={d.hostAs} mono />
+					<Row k="Hosting" v={d.hostingProvider} />
+					<Row k="Checked" v={d.lastChecked ? new Date(d.lastChecked).toLocaleString() : "—"} mono />
+				</Section>
+			</div>
+
+			{Object.keys(d.headers ?? {}).length > 0 ? (
+				<details className="mt-3 overflow-hidden rounded-[10px] border border-border bg-surface">
+					<summary className="cursor-pointer px-4 py-2.5 font-mono text-[10.5px] uppercase tracking-[0.12em] text-text-faint">
+						Response headers ({Object.keys(d.headers ?? {}).length})
+					</summary>
+					<div className="border-t border-border px-4 py-2">
+						{Object.entries(d.headers ?? {}).map(([k, v]) => (
+							<div key={k} className="flex gap-3 py-0.5 font-mono text-[11px]">
+								<span className="w-44 shrink-0 text-text-faint">{k}</span>
+								<span className="truncate text-text-dim">{v}</span>
+							</div>
+						))}
+					</div>
+				</details>
+			) : null}
+
+			<h2 className="mb-2 mt-6 font-mono text-[10.5px] uppercase tracking-[0.12em] text-text-faint">Check history</h2>
+			<div className="overflow-hidden rounded-[10px] border border-border">
+				<table className="w-full text-[12px]">
+					<tbody>
+						{checks.map((c) => (
+							<tr key={c.id} className="border-b border-border/60 last:border-0">
+								<td className="px-4 py-2 font-mono text-[10.5px] text-text-faint">{new Date(c.checkedAt ?? "").toLocaleString()}</td>
+								<td className="px-4 py-2 font-mono text-[11px] text-text-dim">exp {fmtDate(c.expiryDate)}</td>
+								<td className="px-4 py-2 font-mono text-[11px] text-text-dim">ssl {fmtDate(c.sslValidTo)}</td>
+								<td className="px-4 py-2 font-mono text-[11px] text-text-faint">{(c.ipv4 ?? []).join(", ")}</td>
+							</tr>
+						))}
+						{checks.length === 0 && (
+							<tr><td className="px-4 py-6 text-center text-text-faint">No snapshots yet.</td></tr>
+						)}
+					</tbody>
+				</table>
+			</div>
+
+			<DomainDialog open={dlgOpen} onOpenChange={setDlgOpen} domain={d} onSaved={load} />
+		</main>
+	);
+}

apps/frontend/src/pages/DomainsPage.tsx

@@ -0,0 +1,127 @@
+import { useCallback, useEffect, useState } from "react";
+import { Link } from "wouter";
+import { Pause, Play, Plus, RefreshCw, Trash2 } from "lucide-react";
+import { api } from "@/api";
+import type { DomainView } from "@/types";
+import { DomainDialog } from "@/components/DomainDialog";
+import { Button } from "@/components/ui/button";
+import { cn } from "@/lib/utils";
+
+function daysLabel(days: number | null | undefined, warn?: boolean) {
+	if (days === null || days === undefined) return "—";
+	const cls = warn || days < 0 ? "text-down" : days <= 30 ? "text-amber-500" : "text-text-dim";
+	return <span className={cn("font-mono text-[11px]", cls)}>{days < 0 ? "expired" : `${days}d`}</span>;
+}
+
+export function DomainsPage() {
+	const [domains, setDomains] = useState<DomainView[]>([]);
+	const [loaded, setLoaded] = useState(false);
+	const [dlgOpen, setDlgOpen] = useState(false);
+	const [editing, setEditing] = useState<DomainView | undefined>();
+	const [refreshing, setRefreshing] = useState<string | null>(null);
+
+	const load = useCallback(async () => {
+		const { data } = await api.GET("/api/domains");
+		if (data) setDomains(data);
+		setLoaded(true);
+	}, []);
+
+	useEffect(() => { void load(); }, [load]);
+
+	async function act(id: string | undefined, fn: () => Promise<unknown>) {
+		if (!id) return;
+		await fn();
+		await load();
+	}
+
+	return (
+		<main className="mx-auto w-full max-w-5xl px-7 py-8">
+			<div className="mb-5 flex items-center justify-between">
+				<div>
+					<h1 className="text-[15px] font-semibold tracking-tight">Domains</h1>
+					<p className="text-[12px] text-text-faint">WHOIS, DNS, and certificate watch.</p>
+				</div>
+				<Button onClick={() => { setEditing(undefined); setDlgOpen(true); }}>
+					<Plus size={13} strokeWidth={2.2} /> Track domain
+				</Button>
+			</div>
+
+			{loaded && domains.length === 0 ? (
+				<div className="rounded-[10px] border border-dashed border-border px-6 py-14 text-center">
+					<p className="text-[13px] text-text-dim">No domains tracked yet.</p>
+					<p className="mt-1 text-[11.5px] text-text-faint">
+						Expiry, registrar, DNS records, SSL certificates, and provider detection.
+					</p>
+				</div>
+			) : (
+				<div className="overflow-hidden rounded-[10px] border border-border">
+					<table className="w-full text-[13px]">
+						<thead>
+							<tr className="border-b border-border bg-surface text-left font-mono text-[10px] uppercase tracking-[0.1em] text-text-faint">
+								<th className="px-4 py-2.5 font-medium">Domain</th>
+								<th className="px-4 py-2.5 font-medium">Registrar</th>
+								<th className="px-4 py-2.5 font-medium">Expires</th>
+								<th className="px-4 py-2.5 font-medium">SSL</th>
+								<th className="px-4 py-2.5 font-medium">Providers</th>
+								<th className="px-4 py-2.5" />
+							</tr>
+						</thead>
+						<tbody>
+							{domains.map((d) => (
+								<tr key={d.id} className={cn("border-b border-border/60 last:border-0 hover:bg-surface-hover/60", !d.active && "opacity-50")}>
+									<td className="px-4 py-3">
+										<span className="flex items-center gap-2.5 font-medium">
+											{d.faviconUrl ? (
+												<img src={d.faviconUrl} alt="" className="size-4 rounded-sm" loading="lazy" />
+											) : null}
+											<Link href={`/domains/${d.id}`} className="hover:underline">{d.name}</Link>
+											{d.lookupError ? (
+												<span className="font-mono text-[10px] text-down" title={d.lookupError}>lookup error</span>
+											) : null}
+										</span>
+									</td>
+									<td className="px-4 py-3 text-[11.5px] text-text-dim">{d.registrarName || "—"}</td>
+									<td className="px-4 py-3">{daysLabel(d.daysUntilExpiry, d.expiring)}</td>
+									<td className="px-4 py-3">{daysLabel(d.sslDaysUntilExpiry, d.sslExpiring)}</td>
+									<td className="px-4 py-3 font-mono text-[10.5px] text-text-faint">
+										{[d.dnsProvider, d.hostingProvider].filter(Boolean).join(" · ") || "—"}
+									</td>
+									<td className="px-4 py-3">
+										<div className="flex items-center justify-end gap-1">
+											<Button variant="outline" size="icon" aria-label="Refresh now" disabled={refreshing === d.id}
+												onClick={() => {
+													if (!d.id) return;
+													setRefreshing(d.id);
+													void act(d.id, () => api.POST("/api/domains/{id}/refresh", { params: { path: { id: d.id } } }))
+														.finally(() => setRefreshing(null));
+												}}>
+												<RefreshCw size={12} className={cn(refreshing === d.id && "animate-spin")} />
+											</Button>
+											<Button variant="outline" size="icon" aria-label={d.active ? "Pause" : "Resume"}
+												onClick={() => void act(d.id, () => api.PATCH("/api/domains/{id}", { params: { path: { id: d.id! } }, body: { active: !d.active } }))}>
+												{d.active ? <Pause size={12} /> : <Play size={12} />}
+											</Button>
+											<Button variant="outline" size="icon" aria-label="Delete"
+												onClick={() => {
+													if (confirm(`Stop tracking "${d.name}"?`)) {
+														void act(d.id, () => api.DELETE("/api/domains/{id}", { params: { path: { id: d.id! } } }));
+													}
+												}}>
+												<Trash2 size={12} />
+											</Button>
+											<Button variant="outline" size="sm" onClick={() => { setEditing(d); setDlgOpen(true); }}>
+												Edit
+											</Button>
+										</div>
+									</td>
+								</tr>
+							))}
+						</tbody>
+					</table>
+				</div>
+			)}
+
+			<DomainDialog open={dlgOpen} onOpenChange={setDlgOpen} domain={editing} onSaved={load} />
+		</main>
+	);
+}

apps/frontend/src/pages/IncidentsPage.tsx

@@ -0,0 +1,203 @@
+import { useCallback, useEffect, useState } from "react";
+import { Plus, Trash2 } from "lucide-react";
+import { api } from "@/api";
+import type { Incident } from "@/types";
+import { Button } from "@/components/ui/button";
+import {
+	Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogTitle,
+} from "@/components/ui/dialog";
+import { Input } from "@/components/ui/input";
+import { Label } from "@/components/ui/label";
+import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";
+import { cn } from "@/lib/utils";
+
+const SEV_COLOR = {
+	critical: "text-down",
+	major: "text-down",
+	minor: "text-text-faint",
+} satisfies Record<NonNullable<Incident["severity"]>, string>;
+
+type Status = NonNullable<Incident["status"]>;
+const NEXT: Partial<Record<Status, { label: string; to: Status }[]>> = {
+	open: [{ label: "Acknowledge", to: "ack" }, { label: "Resolve", to: "resolved" }],
+	ack: [{ label: "Resolve", to: "resolved" }],
+	resolved: [{ label: "Close", to: "closed" }],
+};
+
+export function IncidentsPage() {
+	const [incidents, setIncidents] = useState<Incident[]>([]);
+	const [loaded, setLoaded] = useState(false);
+	const [showAll, setShowAll] = useState(false);
+	const [dlgOpen, setDlgOpen] = useState(false);
+	const [title, setTitle] = useState("");
+	const [sev, setSev] = useState("major");
+	const [msg, setMsg] = useState("");
+	const [busy, setBusy] = useState(false);
+	const [expanded, setExpanded] = useState<string | null>(null);
+	const [note, setNote] = useState("");
+
+	const load = useCallback(async () => {
+		const { data } = await api.GET("/api/incidents", showAll ? {} : { params: { query: { status: "open" } } });
+		if (data) setIncidents(data);
+		setLoaded(true);
+	}, [showAll]);
+
+	useEffect(() => {
+		void load();
+		const t = setInterval(() => void load(), 30_000);
+		return () => clearInterval(t);
+	}, [load]);
+
+	async function create() {
+		if (!title.trim()) return;
+		setBusy(true);
+		// The select only offers the three severities, but its value is a
+		// plain string — narrow at the boundary instead of asserting.
+		const severity = sev === "critical" || sev === "minor" ? sev : "major";
+		await api.POST("/api/incidents", {
+			body: { title: title.trim(), severity, ...(msg.trim() ? { message: msg.trim() } : {}) },
+		});
+		setBusy(false);
+		setDlgOpen(false);
+		setTitle(""); setMsg("");
+		void load();
+	}
+
+	async function transition(id: string | undefined, to: Status, message?: string) {
+		if (!id) return;
+		await api.PATCH("/api/incidents/{id}", {
+			params: { path: { id } },
+			body: { status: to, ...(message?.trim() ? { message } : {}) },
+		});
+		await load();
+	}
+
+	async function addNote(id: string | undefined) {
+		if (!id || !note.trim()) return;
+		await api.POST("/api/incidents/{id}/updates", { params: { path: { id } }, body: { message: note.trim() } });
+		setNote("");
+		await load();
+	}
+
+	return (
+		<main className="mx-auto w-full max-w-5xl px-7 py-8">
+			<div className="mb-5 flex items-center justify-between">
+				<div>
+					<h1 className="text-[15px] font-semibold tracking-tight">Incidents</h1>
+					<p className="text-[12px] text-text-faint">Auto-opened on monitor outages, or tracked manually.</p>
+				</div>
+				<div className="flex items-center gap-2">
+					<Button variant="outline" size="sm" onClick={() => setShowAll((v) => !v)}>
+						{showAll ? "Open only" : "Show all"}
+					</Button>
+					<Button onClick={() => setDlgOpen(true)}>
+						<Plus size={13} strokeWidth={2.2} /> New incident
+					</Button>
+				</div>
+			</div>
+
+			{loaded && incidents.length === 0 ? (
+				<div className="rounded-[10px] border border-dashed border-border px-6 py-14 text-center">
+					<p className="text-[13px] text-text-dim">No open incidents.</p>
+				</div>
+			) : (
+				<div className="flex flex-col gap-2.5">
+					{incidents.map((inc) => (
+						<div key={inc.id} className="rounded-[10px] border border-border bg-surface px-4 py-3">
+							<div className="flex items-center gap-3">
+								<span className={cn("font-mono text-[10px] uppercase tracking-[0.08em]",
+									inc.severity ? SEV_COLOR[inc.severity] : "text-text-faint")}>
+									{inc.severity}
+								</span>
+								<button type="button" className="min-w-0 flex-1 truncate text-left text-[13px] font-medium hover:underline"
+									onClick={() => setExpanded(expanded === inc.id ? null : (inc.id ?? null))}>
+									{inc.title}
+								</button>
+								<span className="font-mono text-[10.5px] uppercase text-text-faint">{inc.status}</span>
+								<span className="font-mono text-[10.5px] text-text-faint">
+									{inc.createdAt ? new Date(inc.createdAt).toLocaleString() : ""}
+								</span>
+								{(inc.status ? (NEXT[inc.status] ?? []) : []).map((n) => (
+									<Button key={n.to} variant="outline" size="sm" onClick={() => void transition(inc.id, n.to)}>
+										{n.label}
+									</Button>
+								))}
+								<Button variant="outline" size="icon" aria-label="Delete"
+									onClick={() => {
+										if (inc.id && confirm(`Delete incident "${inc.title}"?`)) {
+											void api.DELETE("/api/incidents/{id}", { params: { path: { id: inc.id } } }).then(load);
+										}
+									}}>
+									<Trash2 size={12} />
+								</Button>
+							</div>
+							{expanded === inc.id && (
+								<div className="mt-3 border-t border-border/60 pt-3">
+									<div className="mb-2.5 flex flex-col gap-1.5">
+										{(inc.updates ?? []).map((u) => (
+											<div key={u.id} className="flex items-baseline gap-2.5 text-[12px]">
+												<span className="shrink-0 font-mono text-[10px] uppercase tracking-wide text-text-faint">{u.status}</span>
+												<span className="flex-1 text-text-dim">{u.message}</span>
+												<span className="shrink-0 font-mono text-[10px] text-text-faint">
+													{u.at ? new Date(u.at).toLocaleString() : ""}
+												</span>
+											</div>
+										))}
+										{(inc.updates ?? []).length === 0 && (
+											<p className="text-[11.5px] text-text-faint">No updates yet.</p>
+										)}
+									</div>
+									<div className="flex gap-2">
+										<Input value={note} onChange={(e) => setNote(e.target.value)}
+											placeholder="Add a note…" className="h-8 text-[12px]"
+											onKeyDown={(e) => { if (e.key === "Enter") void addNote(inc.id); }} />
+										<Button variant="outline" size="sm" onClick={() => void addNote(inc.id)}>Post</Button>
+									</div>
+								</div>
+							)}
+						</div>
+					))}
+				</div>
+			)}
+
+			<Dialog open={dlgOpen} onOpenChange={setDlgOpen}>
+				<DialogContent>
+					<DialogHeader>
+						<DialogTitle>New incident</DialogTitle>
+						<DialogDescription>Track an outage or degradation manually.</DialogDescription>
+					</DialogHeader>
+					<div className="flex flex-col gap-4">
+						<div className="flex flex-col gap-1.5">
+							<Label htmlFor="inc-title">Title</Label>
+							<Input id="inc-title" value={title} onChange={(e) => setTitle(e.target.value)}
+								placeholder="NAS offline" autoFocus />
+						</div>
+						<div className="grid grid-cols-2 gap-3">
+							<div className="flex flex-col gap-1.5">
+								<Label>Severity</Label>
+								<Select value={sev} onValueChange={setSev}>
+									<SelectTrigger><SelectValue /></SelectTrigger>
+									<SelectContent>
+										<SelectItem value="minor">minor</SelectItem>
+										<SelectItem value="major">major</SelectItem>
+										<SelectItem value="critical">critical</SelectItem>
+									</SelectContent>
+								</Select>
+							</div>
+							<div className="flex flex-col gap-1.5">
+								<Label htmlFor="inc-msg">Note (optional)</Label>
+								<Input id="inc-msg" value={msg} onChange={(e) => setMsg(e.target.value)} placeholder="First observed…" />
+							</div>
+						</div>
+					</div>
+					<DialogFooter>
+						<Button variant="outline" onClick={() => setDlgOpen(false)} disabled={busy}>Cancel</Button>
+						<Button onClick={() => void create()} disabled={busy || !title.trim()}>
+							{busy ? "Creating…" : "Create"}
+						</Button>
+					</DialogFooter>
+				</DialogContent>
+			</Dialog>
+		</main>
+	);
+}

apps/frontend/src/pages/MonitorDetailPage.tsx

@@ -0,0 +1,146 @@
+import { useCallback, useEffect, useState } from "react";
+import { Link } from "wouter";
+import { ArrowLeft, Pause, Play, RefreshCw, Trash2 } from "lucide-react";
+import { Area, AreaChart, CartesianGrid, ResponsiveContainer, Tooltip, XAxis, YAxis } from "recharts";
+import { api } from "@/api";
+import type { Heartbeat, MonitorView } from "@/types";
+import { MonitorDialog } from "@/components/MonitorDialog";
+import { Button } from "@/components/ui/button";
+import { cn } from "@/lib/utils";
+
+export function MonitorDetailPage({ id }: { id: string }) {
+	const [m, setM] = useState<MonitorView | null>(null);
+	const [hbs, setHbs] = useState<Heartbeat[]>([]);
+	const [hours, setHours] = useState(24);
+	const [dlgOpen, setDlgOpen] = useState(false);
+
+	const load = useCallback(async () => {
+		const [{ data: mv }, { data: hb }] = await Promise.all([
+			api.GET("/api/monitors/{id}", { params: { path: { id } } }),
+			api.GET("/api/monitors/{id}/heartbeats", { params: { path: { id }, query: { hours } } }),
+		]);
+		if (mv) setM(mv);
+		if (hb) setHbs(hb);
+	}, [id, hours]);
+
+	useEffect(() => {
+		void load();
+		const t = setInterval(() => void load(), 30_000);
+		return () => clearInterval(t);
+	}, [load]);
+
+	if (!m) return <main className="mx-auto max-w-5xl px-7 py-8 text-[13px] text-text-faint">Loading…</main>;
+
+	const chart = hbs.map((h) => ({
+		t: new Date(h.checkedAt ?? "").toLocaleTimeString([], { hour: "2-digit", minute: "2-digit" }),
+		ping: h.pingMs,
+		up: h.status === "up",
+	}));
+
+	return (
+		<main className="mx-auto w-full max-w-5xl px-7 py-8">
+			<Link href="/monitors" className="mb-4 inline-flex items-center gap-1.5 text-[12px] text-text-faint hover:text-text">
+				<ArrowLeft size={12} /> Monitors
+			</Link>
+
+			<div className="mb-6 flex items-start justify-between">
+				<div>
+					<div className="flex items-center gap-2.5">
+						<span className={cn("size-2 rounded-full", m.status === "up" ? "bg-up" : m.status === "down" ? "bg-down" : "bg-text-faint/40")} />
+						<h1 className="text-[17px] font-semibold tracking-tight">{m.name}</h1>
+						<span className="font-mono text-[10.5px] uppercase tracking-[0.08em] text-text-faint">{m.status}</span>
+					</div>
+					<p className="mt-1 font-mono text-[11.5px] text-text-faint">
+						{m.type} · {m.url || m.hostname}{m.port ? `:${m.port}` : ""} · every {m.intervalS}s
+					</p>
+				</div>
+				<div className="flex gap-2">
+					<Button variant="outline" size="sm" onClick={() => void api.POST("/api/monitors/{id}/check", { params: { path: { id } } }).then(load)}>
+						<RefreshCw size={12} /> Check now
+					</Button>
+					<Button variant="outline" size="sm"
+						onClick={() => void api.PATCH("/api/monitors/{id}", { params: { path: { id } }, body: { active: !m.active } }).then(load)}>
+						{m.active ? <Pause size={12} /> : <Play size={12} />} {m.active ? "Pause" : "Resume"}
+					</Button>
+					<Button variant="outline" size="sm" onClick={() => setDlgOpen(true)}>Edit</Button>
+					<Button variant="outline" size="sm" aria-label="Delete"
+						onClick={() => {
+							if (confirm(`Delete monitor "${m.name}"?`)) {
+								void api.DELETE("/api/monitors/{id}", { params: { path: { id } } }).then(() => { location.href = "/monitors"; });
+							}
+						}}>
+						<Trash2 size={12} />
+					</Button>
+				</div>
+			</div>
+
+			<div className="mb-6 grid grid-cols-4 gap-3 max-[720px]:grid-cols-2">
+				{[
+					["Uptime 24h", `${m.stats?.uptime24h?.toFixed(2)}%`],
+					["Uptime 30d", `${m.stats?.uptime30d?.toFixed(2)}%`],
+					["Avg ping 24h", m.stats?.avgPing24h ? `${m.stats.avgPing24h} ms` : "—"],
+					["Checks", String((m.stats?.up ?? 0) + (m.stats?.down ?? 0))],
+				].map(([k, v]) => (
+					<div key={k} className="rounded-[10px] border border-border bg-surface px-4 py-3">
+						<div className="font-mono text-[10px] uppercase tracking-[0.1em] text-text-faint">{k}</div>
+						<div className="mt-1 font-mono text-[17px] font-medium">{v}</div>
+					</div>
+				))}
+			</div>
+
+			<div className="mb-2 flex items-center justify-between">
+				<h2 className="font-mono text-[10.5px] uppercase tracking-[0.12em] text-text-faint">Response time</h2>
+				<div className="flex gap-1">
+					{[24, 168, 720].map((h) => (
+						<button key={h} type="button" onClick={() => setHours(h)}
+							className={cn("rounded-[6px] px-2 py-1 font-mono text-[10.5px]",
+								hours === h ? "bg-surface-hover text-text" : "text-text-faint hover:text-text")}>
+							{h === 24 ? "24h" : h === 168 ? "7d" : "30d"}
+						</button>
+					))}
+				</div>
+			</div>
+			<div className="mb-6 h-56 rounded-[10px] border border-border bg-surface p-3">
+				<ResponsiveContainer width="100%" height="100%">
+					<AreaChart data={chart} margin={{ top: 4, right: 4, bottom: 0, left: -18 }}>
+						<CartesianGrid stroke="var(--border)" strokeDasharray="3 3" vertical={false} />
+						<XAxis dataKey="t" tick={{ fontSize: 10, fill: "var(--text-faint)" }} tickLine={false} axisLine={false} minTickGap={40} />
+						<YAxis tick={{ fontSize: 10, fill: "var(--text-faint)" }} tickLine={false} axisLine={false} unit=" ms" width={62} />
+						<Tooltip
+							contentStyle={{ background: "var(--surface)", border: "1px solid var(--border)", borderRadius: 8, fontSize: 11 }}
+							labelStyle={{ color: "var(--text-faint)" }}
+						/>
+						<Area type="monotone" dataKey="ping" stroke="var(--up)" fill="var(--up)" fillOpacity={0.12} strokeWidth={1.5} dot={false} isAnimationActive={false} />
+					</AreaChart>
+				</ResponsiveContainer>
+			</div>
+
+			<h2 className="mb-2 font-mono text-[10.5px] uppercase tracking-[0.12em] text-text-faint">Recent checks</h2>
+			<div className="overflow-hidden rounded-[10px] border border-border">
+				<table className="w-full text-[12px]">
+					<tbody>
+						{[...hbs].reverse().slice(0, 40).map((h) => (
+							<tr key={h.id} className="border-b border-border/60 last:border-0">
+								<td className="px-4 py-2 font-mono text-[10.5px] text-text-faint">
+									{new Date(h.checkedAt ?? "").toLocaleString()}
+								</td>
+								<td className="px-4 py-2">
+									<span className={cn("font-mono text-[10.5px] uppercase", h.status === "up" ? "text-up" : "text-down")}>
+										{h.status}
+									</span>
+								</td>
+								<td className="px-4 py-2 font-mono text-[11px] text-text-dim">{h.pingMs ? `${h.pingMs}ms` : "—"}</td>
+								<td className="px-4 py-2 font-mono text-[11px] text-text-faint">{h.msg}</td>
+							</tr>
+						))}
+						{hbs.length === 0 && (
+							<tr><td className="px-4 py-6 text-center text-text-faint">No checks in range.</td></tr>
+						)}
+					</tbody>
+				</table>
+			</div>
+
+			<MonitorDialog open={dlgOpen} onOpenChange={setDlgOpen} monitor={m} onSaved={load} />
+		</main>
+	);
+}

apps/frontend/src/pages/MonitorsPage.tsx

@@ -0,0 +1,135 @@
+import { useCallback, useEffect, useState } from "react";
+import { Link } from "wouter";
+import { Pause, Play, Plus, RefreshCw, Trash2 } from "lucide-react";
+import { api } from "@/api";
+import type { MonitorView } from "@/types";
+import { MonitorDialog } from "@/components/MonitorDialog";
+import { Button } from "@/components/ui/button";
+import { cn } from "@/lib/utils";
+
+function StatusDot({ status }: { status?: string }) {
+	return (
+		<span
+			className={cn(
+				"size-1.5 shrink-0 rounded-full",
+				status === "up" ? "bg-up" : status === "down" ? "bg-down" : "bg-text-faint/40",
+			)}
+		/>
+	);
+}
+
+export function MonitorsPage() {
+	const [monitors, setMonitors] = useState<MonitorView[]>([]);
+	const [loaded, setLoaded] = useState(false);
+	const [dlgOpen, setDlgOpen] = useState(false);
+	const [editing, setEditing] = useState<MonitorView | undefined>();
+
+	const load = useCallback(async () => {
+		const { data } = await api.GET("/api/monitors");
+		if (data) setMonitors(data);
+		setLoaded(true);
+	}, []);
+
+	useEffect(() => {
+		void load();
+		const t = setInterval(() => void load(), 30_000);
+		return () => clearInterval(t);
+	}, [load]);
+
+	async function act(id: string | undefined, fn: () => Promise<unknown>) {
+		if (!id) return;
+		await fn();
+		await load();
+	}
+
+	return (
+		<main className="mx-auto w-full max-w-5xl px-7 py-8">
+			<div className="mb-5 flex items-center justify-between">
+				<div>
+					<h1 className="text-[15px] font-semibold tracking-tight">Monitors</h1>
+					<p className="text-[12px] text-text-faint">Uptime checks on a schedule.</p>
+				</div>
+				<Button onClick={() => { setEditing(undefined); setDlgOpen(true); }}>
+					<Plus size={13} strokeWidth={2.2} /> New monitor
+				</Button>
+			</div>
+
+			{loaded && monitors.length === 0 ? (
+				<div className="rounded-[10px] border border-dashed border-border px-6 py-14 text-center">
+					<p className="text-[13px] text-text-dim">No monitors yet.</p>
+					<p className="mt-1 text-[11.5px] text-text-faint">
+						HTTP, TCP, ping, DNS, keyword, JSON path, or push — checks run server-side on your interval.
+					</p>
+				</div>
+			) : (
+				<div className="overflow-hidden rounded-[10px] border border-border">
+					<table className="w-full text-[13px]">
+						<thead>
+							<tr className="border-b border-border bg-surface text-left font-mono text-[10px] uppercase tracking-[0.1em] text-text-faint">
+								<th className="px-4 py-2.5 font-medium">Status</th>
+								<th className="px-4 py-2.5 font-medium">Name</th>
+								<th className="px-4 py-2.5 font-medium">Type</th>
+								<th className="px-4 py-2.5 font-medium">Uptime 24h</th>
+								<th className="px-4 py-2.5 font-medium">Uptime 30d</th>
+								<th className="px-4 py-2.5 font-medium">Ping</th>
+								<th className="px-4 py-2.5 font-medium">Every</th>
+								<th className="px-4 py-2.5" />
+							</tr>
+						</thead>
+						<tbody>
+							{monitors.map((m) => (
+								<tr key={m.id} className="border-b border-border/60 last:border-0 hover:bg-surface-hover/60">
+									<td className="px-4 py-3">
+										<span className="flex items-center gap-2 font-mono text-[10.5px] uppercase tracking-[0.06em] text-text-faint">
+											<StatusDot status={m.status} />
+											{m.status}
+										</span>
+									</td>
+									<td className="px-4 py-3 font-medium">
+										<Link href={`/monitors/${m.id}`} className="hover:underline">{m.name}</Link>
+									</td>
+									<td className="px-4 py-3 font-mono text-[11px] text-text-dim">{m.type}</td>
+									<td className="px-4 py-3 font-mono text-[11px] text-text-dim">
+										{m.stats?.uptime24h?.toFixed(1)}%
+									</td>
+									<td className="px-4 py-3 font-mono text-[11px] text-text-dim">
+										{m.stats?.uptime30d?.toFixed(1)}%
+									</td>
+									<td className="px-4 py-3 font-mono text-[11px] text-text-dim">
+										{m.stats?.avgPing24h ? `${m.stats.avgPing24h}ms` : "—"}
+									</td>
+									<td className="px-4 py-3 font-mono text-[11px] text-text-dim">{m.intervalS}s</td>
+									<td className="px-4 py-3">
+										<div className="flex items-center justify-end gap-1">
+											<Button variant="outline" size="icon" aria-label="Check now"
+												onClick={() => void act(m.id, () => api.POST("/api/monitors/{id}/check", { params: { path: { id: m.id! } } }))}>
+												<RefreshCw size={12} />
+											</Button>
+											<Button variant="outline" size="icon" aria-label={m.active ? "Pause" : "Resume"}
+												onClick={() => void act(m.id, () => api.PATCH("/api/monitors/{id}", { params: { path: { id: m.id! } }, body: { active: !m.active } }))}>
+												{m.active ? <Pause size={12} /> : <Play size={12} />}
+											</Button>
+											<Button variant="outline" size="icon" aria-label="Delete"
+												onClick={() => {
+													if (confirm(`Delete monitor "${m.name}"?`)) {
+														void act(m.id, () => api.DELETE("/api/monitors/{id}", { params: { path: { id: m.id! } } }));
+													}
+												}}>
+												<Trash2 size={12} />
+											</Button>
+											<Button variant="outline" size="sm" onClick={() => { setEditing(m); setDlgOpen(true); }}>
+												Edit
+											</Button>
+										</div>
+									</td>
+								</tr>
+							))}
+						</tbody>
+					</table>
+				</div>
+			)}
+
+			<MonitorDialog open={dlgOpen} onOpenChange={setDlgOpen} monitor={editing} onSaved={load} />
+		</main>
+	);
+}

apps/frontend/src/pages/StatusPagesPage.tsx

@@ -0,0 +1,245 @@
+import { useCallback, useEffect, useState } from "react";
+import { Link } from "wouter";
+import { ExternalLink, Plus, Trash2 } from "lucide-react";
+import { api } from "@/api";
+import type { MaintenanceWindow, MonitorView, StatusPage } from "@/types";
+import { Button } from "@/components/ui/button";
+import {
+	Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogTitle,
+} from "@/components/ui/dialog";
+import { Input } from "@/components/ui/input";
+import { Label } from "@/components/ui/label";
+import { cn } from "@/lib/utils";
+
+// Admin for public status pages + maintenance windows. The public view
+// itself lives at /status/:slug.
+
+export function StatusPagesPage() {
+	const [pages, setPages] = useState<StatusPage[]>([]);
+	const [windows, setWindows] = useState<MaintenanceWindow[]>([]);
+	const [monitors, setMonitors] = useState<MonitorView[]>([]);
+	const [loaded, setLoaded] = useState(false);
+
+	const [pageOpen, setPageOpen] = useState(false);
+	const [pTitle, setPTitle] = useState("");
+	const [pSlug, setPSlug] = useState("");
+	const [pDesc, setPDesc] = useState("");
+	const [pMonitors, setPMonitors] = useState<string[]>([]);
+
+	const [winOpen, setWinOpen] = useState(false);
+	const [wTitle, setWTitle] = useState("");
+	const [wStart, setWStart] = useState("");
+	const [wEnd, setWEnd] = useState("");
+	const [busy, setBusy] = useState(false);
+	const [err, setErr] = useState("");
+
+	const load = useCallback(async () => {
+		const [{ data: p }, { data: w }, { data: m }] = await Promise.all([
+			api.GET("/api/status-pages"),
+			api.GET("/api/maintenance"),
+			api.GET("/api/monitors"),
+		]);
+		if (p) setPages(p);
+		if (w) setWindows(w);
+		if (m) setMonitors(m);
+		setLoaded(true);
+	}, []);
+
+	useEffect(() => {
+		void load();
+		const t = setInterval(() => void load(), 30_000);
+		return () => clearInterval(t);
+	}, [load]);
+
+	async function createPage() {
+		if (!pTitle.trim()) return;
+		setBusy(true); setErr("");
+		const { error } = await api.POST("/api/status-pages", {
+			body: {
+				title: pTitle.trim(),
+				...(pSlug.trim() ? { slug: pSlug.trim() } : {}),
+				description: pDesc.trim(),
+				monitorIds: pMonitors,
+			},
+		});
+		setBusy(false);
+		if (error) { setErr("Could not create — slug may be taken."); return; }
+		setPageOpen(false); setPTitle(""); setPSlug(""); setPDesc(""); setPMonitors([]);
+		void load();
+	}
+
+	async function createWindow() {
+		if (!wTitle.trim() || !wStart || !wEnd) return;
+		setBusy(true); setErr("");
+		const { error } = await api.POST("/api/maintenance", {
+			body: {
+				title: wTitle.trim(),
+				startsAt: new Date(wStart).toISOString(),
+				endsAt: new Date(wEnd).toISOString(),
+			},
+		});
+		setBusy(false);
+		if (error) { setErr("Invalid window — check times."); return; }
+		setWinOpen(false); setWTitle(""); setWStart(""); setWEnd("");
+		void load();
+	}
+
+	return (
+		<main className="mx-auto w-full max-w-5xl px-7 py-8">
+			<div className="mb-5 flex items-center justify-between">
+				<div>
+					<h1 className="text-[15px] font-semibold tracking-tight">Status pages</h1>
+					<p className="text-[12px] text-text-faint">Public live views at <code className="font-mono">/status/&lt;slug&gt;</code>.</p>
+				</div>
+				<Button onClick={() => setPageOpen(true)}>
+					<Plus size={13} strokeWidth={2.2} /> New page
+				</Button>
+			</div>
+
+			{loaded && pages.length === 0 ? (
+				<div className="mb-8 rounded-[10px] border border-dashed border-border px-6 py-10 text-center">
+					<p className="text-[13px] text-text-dim">No status pages yet.</p>
+				</div>
+			) : (
+				<div className="mb-8 flex flex-col gap-2">
+					{pages.map((p) => (
+						<div key={p.id} className="flex items-center gap-3 rounded-[10px] border border-border bg-surface px-4 py-3">
+							<span className="min-w-0 flex-1 truncate text-[13px] font-medium">{p.title}</span>
+							<code className="font-mono text-[11px] text-text-faint">/status/{p.slug}</code>
+							<Link href={`/status/${p.slug}`} className="shrink-0">
+								<Button variant="outline" size="icon" aria-label="Open public page"><ExternalLink size={12} /></Button>
+							</Link>
+							<Button variant="outline" size="icon" aria-label="Delete"
+								onClick={() => {
+									if (p.id && confirm(`Delete status page "${p.title}"?`)) {
+										void api.DELETE("/api/status-pages/{id}", { params: { path: { id: p.id } } }).then(load);
+									}
+								}}>
+								<Trash2 size={12} />
+							</Button>
+						</div>
+					))}
+				</div>
+			)}
+
+			<div className="mb-5 flex items-center justify-between">
+				<div>
+					<h2 className="text-[15px] font-semibold tracking-tight">Maintenance windows</h2>
+					<p className="text-[12px] text-text-faint">Active windows mute alerts + auto-incidents and mark covered monitors.</p>
+				</div>
+				<Button variant="outline" onClick={() => setWinOpen(true)}>
+					<Plus size={13} strokeWidth={2.2} /> Schedule
+				</Button>
+			</div>
+
+			{loaded && windows.length === 0 ? (
+				<div className="rounded-[10px] border border-dashed border-border px-6 py-10 text-center">
+					<p className="text-[13px] text-text-dim">No maintenance scheduled.</p>
+				</div>
+			) : (
+				<div className="flex flex-col gap-2">
+					{windows.map((w) => (
+						<div key={w.id} className="flex items-center gap-3 rounded-[10px] border border-border bg-surface px-4 py-3">
+							<span className={cn("size-1.5 shrink-0 rounded-full", w.active ? "bg-up" : "bg-text-faint/40")} />
+							<span className="min-w-0 flex-1 truncate text-[13px] font-medium">{w.title}</span>
+							<span className="font-mono text-[10.5px] text-text-faint">
+								{new Date(w.startsAt ?? "").toLocaleString()} → {new Date(w.endsAt ?? "").toLocaleString()}
+							</span>
+							<span className={cn("font-mono text-[10px] uppercase", w.active ? "text-up" : "text-text-faint")}>
+								{w.active ? "active" : "scheduled"}
+							</span>
+							<Button variant="outline" size="icon" aria-label="Delete"
+								onClick={() => {
+									if (w.id && confirm(`Delete window "${w.title}"?`)) {
+										void api.DELETE("/api/maintenance/{id}", { params: { path: { id: w.id } } }).then(load);
+									}
+								}}>
+								<Trash2 size={12} />
+							</Button>
+						</div>
+					))}
+				</div>
+			)}
+
+			<Dialog open={pageOpen} onOpenChange={setPageOpen}>
+				<DialogContent>
+					<DialogHeader>
+						<DialogTitle>New status page</DialogTitle>
+						<DialogDescription>Public live view over selected monitors.</DialogDescription>
+					</DialogHeader>
+					<div className="flex flex-col gap-4">
+						<div className="grid grid-cols-2 gap-3">
+							<div className="flex flex-col gap-1.5">
+								<Label htmlFor="sp-title">Title</Label>
+								<Input id="sp-title" value={pTitle} onChange={(e) => setPTitle(e.target.value)} placeholder="Homelab status" autoFocus />
+							</div>
+							<div className="flex flex-col gap-1.5">
+								<Label htmlFor="sp-slug">Slug</Label>
+								<Input id="sp-slug" value={pSlug} onChange={(e) => setPSlug(e.target.value)} placeholder="auto" className="font-mono text-[12px]" />
+							</div>
+						</div>
+						<div className="flex flex-col gap-1.5">
+							<Label htmlFor="sp-desc">Description</Label>
+							<Input id="sp-desc" value={pDesc} onChange={(e) => setPDesc(e.target.value)} placeholder="optional" />
+						</div>
+						<div className="flex flex-col gap-1.5">
+							<Label>Monitors</Label>
+							<div className="max-h-40 overflow-y-auto rounded-[7px] border border-border p-2">
+								{monitors.map((m) => (
+									<label key={m.id} className="flex items-center gap-2 px-1 py-1 text-[12px]">
+										<input type="checkbox" className="accent-current"
+											checked={pMonitors.includes(m.id ?? "")}
+											onChange={(e) => setPMonitors((v) =>
+												e.target.checked ? [...v, m.id ?? ""] : v.filter((x) => x !== m.id))} />
+										{m.name}
+									</label>
+								))}
+								{monitors.length === 0 && <p className="px-1 py-1 text-[11.5px] text-text-faint">No monitors yet — empty selection shows all.</p>}
+							</div>
+							<p className="text-[11px] text-text-faint">Leave all unchecked to include every active monitor.</p>
+						</div>
+						{err ? <p className="text-[12px] text-destructive">{err}</p> : null}
+					</div>
+					<DialogFooter>
+						<Button variant="outline" onClick={() => setPageOpen(false)} disabled={busy}>Cancel</Button>
+						<Button onClick={() => void createPage()} disabled={busy || !pTitle.trim()}>
+							{busy ? "Creating…" : "Create"}
+						</Button>
+					</DialogFooter>
+				</DialogContent>
+			</Dialog>
+
+			<Dialog open={winOpen} onOpenChange={setWinOpen}>
+				<DialogContent>
+					<DialogHeader>
+						<DialogTitle>Schedule maintenance</DialogTitle>
+						<DialogDescription>Suppresses alerts and auto-incidents for the window.</DialogDescription>
+					</DialogHeader>
+					<div className="flex flex-col gap-4">
+						<div className="flex flex-col gap-1.5">
+							<Label htmlFor="mw-title">Title</Label>
+							<Input id="mw-title" value={wTitle} onChange={(e) => setWTitle(e.target.value)} placeholder="Network upgrade" autoFocus />
+						</div>
+						<div className="grid grid-cols-2 gap-3">
+							<div className="flex flex-col gap-1.5">
+								<Label htmlFor="mw-start">Starts</Label>
+								<Input id="mw-start" type="datetime-local" value={wStart} onChange={(e) => setWStart(e.target.value)} />
+							</div>
+							<div className="flex flex-col gap-1.5">
+								<Label htmlFor="mw-end">Ends</Label>
+								<Input id="mw-end" type="datetime-local" value={wEnd} onChange={(e) => setWEnd(e.target.value)} />
+							</div>
+						</div>
+						{err ? <p className="text-[12px] text-destructive">{err}</p> : null}
+					</div>
+					<DialogFooter>
+						<Button variant="outline" onClick={() => setWinOpen(false)} disabled={busy}>Cancel</Button>
+						<Button onClick={() => void createWindow()} disabled={busy || !wTitle.trim() || !wStart || !wEnd}>
+							{busy ? "Saving…" : "Schedule"}
+						</Button>
+					</DialogFooter>
+				</DialogContent>
+			</Dialog>
+		</main>
+	);
+}

apps/frontend/src/pages/StatusPublicPage.tsx

@@ -0,0 +1,128 @@
+import { useCallback, useEffect, useState } from "react";
+import { api } from "@/api";
+import type { PublicStatus } from "@/types";
+import { cn } from "@/lib/utils";
+
+// Public status page — clean read-only view; refreshes every 30s.
+// Route: /status/:slug -> GET /api/status-pages/:slug/public.
+
+// status strings arrive as plain `string` — map with functions, not
+// open dictionaries, so the lookup type stays honest.
+function overallBanner(overall?: string) {
+	if (overall === "down") return { label: "Major outage", cls: "bg-down" };
+	if (overall === "maintenance") return { label: "Under maintenance", cls: "bg-text-faint/60" };
+	if (overall === "up") return { label: "All systems operational", cls: "bg-up" };
+	return { label: "Checking…", cls: "bg-text-faint/40" };
+}
+
+function dotCls(status?: string) {
+	if (status === "up") return "bg-up";
+	if (status === "down") return "bg-down";
+	if (status === "maintenance") return "bg-text-faint/60";
+	return "bg-text-faint/40";
+}
+
+export function StatusPublicPage({ slug }: { slug: string }) {
+	const [st, setSt] = useState<PublicStatus | null>(null);
+	const [missing, setMissing] = useState(false);
+
+	const load = useCallback(async () => {
+		const { data, response } = await api.GET("/api/status-pages/{slug}/public", { params: { path: { slug } } });
+		if (response.status === 404) setMissing(true);
+		if (data) setSt(data);
+	}, [slug]);
+
+	useEffect(() => {
+		void load();
+		const t = setInterval(() => void load(), 30_000);
+		return () => clearInterval(t);
+	}, [load]);
+
+	if (missing) return <main className="mx-auto max-w-2xl px-7 py-16 text-center text-[13px] text-text-faint">Status page not found.</main>;
+	if (!st) return <main className="mx-auto max-w-2xl px-7 py-16 text-center text-[13px] text-text-faint">Loading…</main>;
+
+	const banner = overallBanner(st.overall);
+
+	return (
+		<main className="mx-auto w-full max-w-2xl px-7 py-10">
+			<div className="mb-6 text-center">
+				<h1 className="text-[17px] font-semibold tracking-tight">{st.title}</h1>
+				{st.description ? <p className="mt-1 text-[12px] text-text-faint">{st.description}</p> : null}
+			</div>
+
+			<div className={cn("mb-8 rounded-[10px] px-5 py-3.5 text-center text-[13px] font-medium text-white", banner.cls)}>
+				{banner.label}
+			</div>
+
+			{(st.monitors ?? []).length > 0 && (
+				<section className="mb-6">
+					<h2 className="mb-2 font-mono text-[10.5px] uppercase tracking-[0.12em] text-text-faint">Services</h2>
+					<div className="overflow-hidden rounded-[10px] border border-border">
+						{(st.monitors ?? []).map((m) => (
+							<div key={m.id} className="flex items-center gap-3 border-b border-border/60 px-4 py-2.5 last:border-0">
+								<span className={cn("size-1.5 shrink-0 rounded-full", dotCls(m.status))} />
+								<span className="min-w-0 flex-1 truncate text-[13px]">{m.name}</span>
+								<span className="font-mono text-[10.5px] text-text-faint">{m.uptime24h?.toFixed(1)}%</span>
+								<span className="w-20 text-right font-mono text-[10.5px] uppercase text-text-faint">{m.status}</span>
+							</div>
+						))}
+					</div>
+				</section>
+			)}
+
+			{(st.systems ?? []).length > 0 && (
+				<section className="mb-6">
+					<h2 className="mb-2 font-mono text-[10.5px] uppercase tracking-[0.12em] text-text-faint">Systems</h2>
+					<div className="overflow-hidden rounded-[10px] border border-border">
+						{(st.systems ?? []).map((s) => (
+							<div key={s.id} className="flex items-center gap-3 border-b border-border/60 px-4 py-2.5 last:border-0">
+								<span className={cn("size-1.5 shrink-0 rounded-full", dotCls(s.status))} />
+								<span className="min-w-0 flex-1 truncate text-[13px]">{s.name}</span>
+								<span className="font-mono text-[10.5px] uppercase text-text-faint">{s.status}</span>
+							</div>
+						))}
+					</div>
+				</section>
+			)}
+
+			{(st.maintenance ?? []).length > 0 && (
+				<section className="mb-6">
+					<h2 className="mb-2 font-mono text-[10.5px] uppercase tracking-[0.12em] text-text-faint">Maintenance</h2>
+					<div className="overflow-hidden rounded-[10px] border border-border">
+						{(st.maintenance ?? []).map((w) => (
+							<div key={w.id} className="flex items-center gap-3 border-b border-border/60 px-4 py-2.5 last:border-0">
+								<span className="min-w-0 flex-1 truncate text-[13px]">{w.title}</span>
+								<span className="font-mono text-[10.5px] text-text-faint">
+									{new Date(w.startsAt ?? "").toLocaleString()} → {new Date(w.endsAt ?? "").toLocaleString()}
+								</span>
+							</div>
+						))}
+					</div>
+				</section>
+			)}
+
+			{(st.incidents ?? []).length > 0 && (
+				<section className="mb-6">
+					<h2 className="mb-2 font-mono text-[10.5px] uppercase tracking-[0.12em] text-text-faint">Incidents</h2>
+					<div className="flex flex-col gap-2">
+						{(st.incidents ?? []).map((inc) => (
+							<div key={inc.id} className="rounded-[10px] border border-border px-4 py-3">
+								<div className="flex items-center gap-3">
+									<span className="min-w-0 flex-1 truncate text-[13px] font-medium">{inc.title}</span>
+									<span className="font-mono text-[10.5px] uppercase text-text-faint">{inc.status}</span>
+								</div>
+								{(inc.updates ?? []).slice(-3).map((u) => (
+									<p key={u.id} className="mt-1.5 text-[11.5px] text-text-faint">
+										<span className="font-mono text-[10px] uppercase">{u.status}</span> — {u.message}
+									</p>
+								))}
+							</div>
+						))}
+					</div>
+				</section>
+			)}
+
+			<p className="mt-10 text-center font-mono text-[10px] text-text-faint">powered by dash</p>
+		</main>
+	);
+}

apps/frontend/src/pages/SystemDetailPage.tsx

@@ -0,0 +1,220 @@
+import { useCallback, useEffect, useState } from "react";
+import { Link } from "wouter";
+import { ArrowLeft, Copy, Trash2 } from "lucide-react";
+import { Area, AreaChart, CartesianGrid, Line, LineChart, ResponsiveContainer, Tooltip, XAxis, YAxis } from "recharts";
+import { api } from "@/api";
+import type { System, SystemStat } from "@/types";
+import { agentCmd, fmtBytes, fmtUptime } from "@/pages/SystemsPage";
+import { Button } from "@/components/ui/button";
+import { cn } from "@/lib/utils";
+
+export function SystemDetailPage({ id }: { id: string }) {
+	const [sys, setSys] = useState<System | null>(null);
+	const [stats, setStats] = useState<SystemStat[]>([]);
+	const [hours, setHours] = useState(24);
+	const [notFound, setNotFound] = useState(false);
+
+	const load = useCallback(async () => {
+		const [{ data: s, response }, { data: st }] = await Promise.all([
+			api.GET("/api/systems/{id}", { params: { path: { id } } }),
+			api.GET("/api/systems/{id}/stats", { params: { path: { id }, query: { hours } } }),
+		]);
+		if (response.status === 404) setNotFound(true);
+		if (s) setSys(s);
+		if (st) setStats(st);
+	}, [id, hours]);
+
+	useEffect(() => {
+		void load();
+		const t = setInterval(() => void load(), 15_000);
+		return () => clearInterval(t);
+	}, [load]);
+
+	if (notFound) return (
+		<main className="mx-auto max-w-5xl px-7 py-8 text-[13px] text-text-faint">
+			<Link href="/systems" className="inline-flex items-center gap-1.5 hover:text-text"><ArrowLeft size={12} /> Systems</Link>
+			<p className="mt-4">System not found.</p>
+		</main>
+	);
+	if (!sys) return <main className="mx-auto max-w-5xl px-7 py-8 text-[13px] text-text-faint">Loading…</main>;
+
+	const l = sys.latest;
+	const chart = stats.map((s) => ({
+		t: new Date(s.ts ?? "").toLocaleTimeString([], { hour: "2-digit", minute: "2-digit" }),
+		cpu: s.cpu,
+		memPct: s.memTotal ? ((s.memUsed ?? 0) / s.memTotal) * 100 : undefined,
+		rx: (s.netRx ?? 0) / 1024,
+		tx: (s.netTx ?? 0) / 1024,
+		load: s.load1,
+	}));
+	const axisTick = { fontSize: 10, fill: "var(--text-faint)" };
+	const tipStyle = { background: "var(--surface)", border: "1px solid var(--border)", borderRadius: 8, fontSize: 11 };
+
+	return (
+		<main className="mx-auto w-full max-w-5xl px-7 py-8">
+			<Link href="/systems" className="mb-4 inline-flex items-center gap-1.5 text-[12px] text-text-faint hover:text-text">
+				<ArrowLeft size={12} /> Systems
+			</Link>
+
+			<div className="mb-6 flex items-start justify-between">
+				<div>
+					<div className="flex items-center gap-2.5">
+						<span className={cn("size-2 rounded-full",
+							sys.status === "up" ? "bg-up" : sys.status === "down" ? "bg-down" : "bg-text-faint/40")} />
+						<h1 className="text-[17px] font-semibold tracking-tight">{sys.name}</h1>
+						<span className="font-mono text-[10.5px] uppercase tracking-[0.08em] text-text-faint">{sys.status}</span>
+					</div>
+					<p className="mt-1 font-mono text-[11.5px] text-text-faint">
+						{sys.host ? `${sys.host} · ` : ""}{sys.os}/{sys.arch}
+						{sys.cpuModel ? ` · ${sys.cpuModel}` : ""}{sys.cores ? ` · ${sys.cores} cores` : ""}
+						{sys.lastSeenAt ? ` · seen ${new Date(sys.lastSeenAt).toLocaleTimeString()}` : " · never seen"}
+					</p>
+				</div>
+				<div className="flex gap-2">
+					<Button variant="outline" size="sm" aria-label="Delete"
+						onClick={() => {
+							if (confirm(`Delete system "${sys.name}"?`)) {
+								void api.DELETE("/api/systems/{id}", { params: { path: { id } } }).then(() => { location.href = "/systems"; });
+							}
+						}}>
+						<Trash2 size={12} />
+					</Button>
+				</div>
+			</div>
+
+			<div className="mb-6 grid grid-cols-4 gap-3 max-[720px]:grid-cols-2">
+				{[
+					["CPU", l?.cpu !== undefined ? `${l.cpu.toFixed(1)}%` : "—"],
+					["Memory", l?.memTotal ? `${fmtBytes(l.memUsed ?? 0)} / ${fmtBytes(l.memTotal)}` : "—"],
+					["Disk /", l?.diskTotal ? `${fmtBytes(l.diskUsed ?? 0)} / ${fmtBytes(l.diskTotal)}` : "—"],
+					["Uptime", l?.uptimeS ? fmtUptime(l.uptimeS) : "—"],
+				].map(([k, v]) => (
+					<div key={k} className="rounded-[10px] border border-border bg-surface px-4 py-3">
+						<div className="font-mono text-[10px] uppercase tracking-[0.1em] text-text-faint">{k}</div>
+						<div className="mt-1 font-mono text-[15px] font-medium">{v}</div>
+					</div>
+				))}
+			</div>
+
+			<div className="mb-2 flex items-center justify-between">
+				<h2 className="font-mono text-[10.5px] uppercase tracking-[0.12em] text-text-faint">Usage</h2>
+				<div className="flex gap-1">
+					{[1, 6, 24, 168].map((h) => (
+						<button key={h} type="button" onClick={() => setHours(h)}
+							className={cn("rounded-[6px] px-2 py-1 font-mono text-[10.5px]",
+								hours === h ? "bg-surface-hover text-text" : "text-text-faint hover:text-text")}>
+							{h === 1 ? "1h" : h === 6 ? "6h" : h === 24 ? "24h" : "7d"}
+						</button>
+					))}
+				</div>
+			</div>
+
+			<div className="mb-6 grid grid-cols-2 gap-3 max-[720px]:grid-cols-1">
+				<div className="h-44 rounded-[10px] border border-border bg-surface p-3">
+					<div className="mb-1 font-mono text-[9.5px] uppercase tracking-[0.1em] text-text-faint">CPU %</div>
+					<ResponsiveContainer width="100%" height="85%">
+						<AreaChart data={chart} margin={{ top: 4, right: 4, bottom: 0, left: -22 }}>
+							<CartesianGrid stroke="var(--border)" strokeDasharray="3 3" vertical={false} />
+							<XAxis dataKey="t" tick={axisTick} tickLine={false} axisLine={false} minTickGap={40} />
+							<YAxis tick={axisTick} tickLine={false} axisLine={false} domain={[0, 100]} unit="%" width={48} />
+							<Tooltip contentStyle={tipStyle} labelStyle={{ color: "var(--text-faint)" }} />
+							<Area type="monotone" dataKey="cpu" stroke="var(--up)" fill="var(--up)" fillOpacity={0.12} strokeWidth={1.5} dot={false} isAnimationActive={false} />
+						</AreaChart>
+					</ResponsiveContainer>
+				</div>
+				<div className="h-44 rounded-[10px] border border-border bg-surface p-3">
+					<div className="mb-1 font-mono text-[9.5px] uppercase tracking-[0.1em] text-text-faint">Memory %</div>
+					<ResponsiveContainer width="100%" height="85%">
+						<AreaChart data={chart} margin={{ top: 4, right: 4, bottom: 0, left: -22 }}>
+							<CartesianGrid stroke="var(--border)" strokeDasharray="3 3" vertical={false} />
+							<XAxis dataKey="t" tick={axisTick} tickLine={false} axisLine={false} minTickGap={40} />
+							<YAxis tick={axisTick} tickLine={false} axisLine={false} domain={[0, 100]} unit="%" width={48} />
+							<Tooltip contentStyle={tipStyle} labelStyle={{ color: "var(--text-faint)" }} />
+							<Area type="monotone" dataKey="memPct" stroke="var(--up)" fill="var(--up)" fillOpacity={0.12} strokeWidth={1.5} dot={false} isAnimationActive={false} />
+						</AreaChart>
+					</ResponsiveContainer>
+				</div>
+				<div className="h-44 rounded-[10px] border border-border bg-surface p-3">
+					<div className="mb-1 font-mono text-[9.5px] uppercase tracking-[0.1em] text-text-faint">Network KB/s</div>
+					<ResponsiveContainer width="100%" height="85%">
+						<LineChart data={chart} margin={{ top: 4, right: 4, bottom: 0, left: -18 }}>
+							<CartesianGrid stroke="var(--border)" strokeDasharray="3 3" vertical={false} />
+							<XAxis dataKey="t" tick={axisTick} tickLine={false} axisLine={false} minTickGap={40} />
+							<YAxis tick={axisTick} tickLine={false} axisLine={false} width={58} />
+							<Tooltip contentStyle={tipStyle} labelStyle={{ color: "var(--text-faint)" }} />
+							<Line type="monotone" dataKey="rx" name="rx" stroke="var(--up)" strokeWidth={1.5} dot={false} isAnimationActive={false} />
+							<Line type="monotone" dataKey="tx" name="tx" stroke="var(--text-faint)" strokeWidth={1.5} dot={false} isAnimationActive={false} />
+						</LineChart>
+					</ResponsiveContainer>
+				</div>
+				<div className="h-44 rounded-[10px] border border-border bg-surface p-3">
+					<div className="mb-1 font-mono text-[9.5px] uppercase tracking-[0.1em] text-text-faint">Load 1m</div>
+					<ResponsiveContainer width="100%" height="85%">
+						<AreaChart data={chart} margin={{ top: 4, right: 4, bottom: 0, left: -22 }}>
+							<CartesianGrid stroke="var(--border)" strokeDasharray="3 3" vertical={false} />
+							<XAxis dataKey="t" tick={axisTick} tickLine={false} axisLine={false} minTickGap={40} />
+							<YAxis tick={axisTick} tickLine={false} axisLine={false} width={48} />
+							<Tooltip contentStyle={tipStyle} labelStyle={{ color: "var(--text-faint)" }} />
+							<Area type="monotone" dataKey="load" stroke="var(--up)" fill="var(--up)" fillOpacity={0.12} strokeWidth={1.5} dot={false} isAnimationActive={false} />
+						</AreaChart>
+					</ResponsiveContainer>
+				</div>
+			</div>
+
+			<div className="grid grid-cols-2 gap-3 max-[720px]:grid-cols-1">
+				{l?.temps && Object.keys(l.temps).length > 0 && (
+					<div className="rounded-[10px] border border-border">
+						<h2 className="border-b border-border bg-surface px-4 py-2.5 font-mono text-[10px] uppercase tracking-[0.1em] text-text-faint">
+							Temperatures
+						</h2>
+						<table className="w-full text-[12px]">
+							<tbody>
+								{Object.entries(l.temps).map(([k, v]) => (
+									<tr key={k} className="border-b border-border/60 last:border-0">
+										<td className="px-4 py-2 text-text-dim">{k}</td>
+										<td className="px-4 py-2 text-right font-mono text-[11px]">{v.toFixed(1)}°C</td>
+									</tr>
+								))}
+							</tbody>
+						</table>
+					</div>
+				)}
+				{l?.containers && l.containers.length > 0 && (
+					<div className="rounded-[10px] border border-border">
+						<h2 className="border-b border-border bg-surface px-4 py-2.5 font-mono text-[10px] uppercase tracking-[0.1em] text-text-faint">
+							Containers
+						</h2>
+						<table className="w-full text-[12px]">
+							<tbody>
+								{l.containers.map((ctr) => (
+									<tr key={ctr.name} className="border-b border-border/60 last:border-0">
+										<td className="px-4 py-2 font-mono text-[11px] text-text-dim">{ctr.name}</td>
+										<td className="px-4 py-2 text-right">
+											<span className={cn("font-mono text-[10.5px] uppercase",
+												ctr.state === "running" ? "text-up" : "text-text-faint")}>
+												{ctr.state}
+											</span>
+										</td>
+									</tr>
+								))}
+							</tbody>
+						</table>
+					</div>
+				)}
+			</div>
+
+			<div className="mt-6 rounded-[10px] border border-border bg-surface px-4 py-3">
+				<div className="mb-1.5 font-mono text-[10px] uppercase tracking-[0.1em] text-text-faint">Agent command</div>
+				<div className="flex items-center gap-2">
+					<code className="flex-1 overflow-x-auto whitespace-nowrap font-mono text-[11px] text-text-dim">
+						{agentCmd(sys)}
+					</code>
+					<Button variant="outline" size="icon" aria-label="Copy"
+						onClick={() => void navigator.clipboard.writeText(agentCmd(sys))}>
+						<Copy size={12} />
+					</Button>
+				</div>
+			</div>
+		</main>
+	);
+}

apps/frontend/src/pages/SystemsPage.tsx

@@ -0,0 +1,201 @@
+import { useCallback, useEffect, useState } from "react";
+import { Link } from "wouter";
+import { Copy, Plus, Trash2 } from "lucide-react";
+import { api } from "@/api";
+import type { System } from "@/types";
+import { Button } from "@/components/ui/button";
+import {
+	Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogTitle,
+} from "@/components/ui/dialog";
+import { Input } from "@/components/ui/input";
+import { Label } from "@/components/ui/label";
+import { cn } from "@/lib/utils";
+
+const TB = 2 ** 40;
+const GB = 2 ** 30;
+const MB = 2 ** 20;
+
+export function fmtBytes(b: number) {
+	if (b >= TB) return `${(b / TB).toFixed(1)} TB`;
+	if (b >= GB) return `${(b / GB).toFixed(1)} GB`;
+	return `${(b / MB).toFixed(0)} MB`;
+}
+
+export function fmtUptime(s: number) {
+	const d = Math.floor(s / 86400);
+	if (d > 0) return `${d}d ${Math.floor((s % 86400) / 3600)}h`;
+	const h = Math.floor(s / 3600);
+	if (h > 0) return `${h}h ${Math.floor((s % 3600) / 60)}m`;
+	return `${Math.floor(s / 60)}m`;
+}
+
+export function Bar({ pct, warnAt = 90 }: { pct: number | undefined; warnAt?: number }) {
+	return (
+		<span className="h-1.5 w-full overflow-hidden rounded-full bg-surface-hover">
+			<span
+				className={cn("block h-full rounded-full", pct !== undefined && pct > warnAt ? "bg-down" : "bg-up")}
+				style={{ width: `${Math.min(pct ?? 0, 100)}%` }}
+			/>
+		</span>
+	);
+}
+
+/** The one-liner agents run; shown on create and on the detail page. */
+export function agentCmd(sys: System) {
+	const base = location.origin;
+	return `DASH_URL=${base} DASH_TOKEN=${sys.token} dash-agent`;
+}
+
+export function SystemsPage() {
+	const [systems, setSystems] = useState<System[]>([]);
+	const [loaded, setLoaded] = useState(false);
+	const [dlgOpen, setDlgOpen] = useState(false);
+	const [name, setName] = useState("");
+	const [busy, setBusy] = useState(false);
+	const [created, setCreated] = useState<System | null>(null);
+
+	const load = useCallback(async () => {
+		const { data } = await api.GET("/api/systems");
+		if (data) setSystems(data);
+		setLoaded(true);
+	}, []);
+
+	useEffect(() => {
+		void load();
+		const t = setInterval(() => void load(), 15_000);
+		return () => clearInterval(t);
+	}, [load]);
+
+	async function create() {
+		if (!name.trim()) return;
+		setBusy(true);
+		const { data } = await api.POST("/api/systems", { body: { name: name.trim() } });
+		setBusy(false);
+		if (data) {
+			setCreated(data);
+			setName("");
+			void load();
+		}
+	}
+
+	async function remove(id: string | undefined, n: string | undefined) {
+		if (!id || !confirm(`Delete system "${n}"?`)) return;
+		await api.DELETE("/api/systems/{id}", { params: { path: { id } } });
+		await load();
+	}
+
+	return (
+		<main className="mx-auto w-full max-w-5xl px-7 py-8">
+			<div className="mb-5 flex items-center justify-between">
+				<div>
+					<h1 className="text-[15px] font-semibold tracking-tight">Systems</h1>
+					<p className="text-[12px] text-text-faint">Servers and PCs reporting via dash-agent.</p>
+				</div>
+				<Button onClick={() => { setCreated(null); setDlgOpen(true); }}>
+					<Plus size={13} strokeWidth={2.2} /> New system
+				</Button>
+			</div>
+
+			{loaded && systems.length === 0 ? (
+				<div className="rounded-[10px] border border-dashed border-border px-6 py-14 text-center">
+					<p className="text-[13px] text-text-dim">No systems yet.</p>
+					<p className="mt-1 text-[11.5px] text-text-faint">
+						Add one, then run <code className="font-mono">dash-agent</code> on the host with the issued token.
+					</p>
+				</div>
+			) : (
+				<div className="grid grid-cols-3 gap-3 max-[900px]:grid-cols-2 max-[560px]:grid-cols-1">
+					{systems.map((sys) => {
+						const l = sys.latest;
+						const memPct = l?.memTotal ? ((l.memUsed ?? 0) / l.memTotal) * 100 : undefined;
+						const diskPct = l?.diskTotal ? ((l.diskUsed ?? 0) / l.diskTotal) * 100 : undefined;
+						const rows: [string, number | undefined, string][] = [
+							["cpu", l?.cpu, l?.cpu !== undefined ? `${l.cpu.toFixed(0)}%` : "—"],
+							["mem", memPct, l?.memTotal ? `${fmtBytes(l.memUsed ?? 0)} / ${fmtBytes(l.memTotal)}` : "—"],
+							["disk", diskPct, l?.diskTotal ? `${fmtBytes(l.diskUsed ?? 0)} / ${fmtBytes(l.diskTotal)}` : "—"],
+						];
+						return (
+							<div key={sys.id} className="rounded-[10px] border border-border bg-surface px-4 py-3.5">
+								<div className="mb-2.5 flex items-center gap-2">
+									<span className={cn("size-1.5 shrink-0 rounded-full",
+										sys.status === "up" ? "bg-up" : sys.status === "down" ? "bg-down" : "bg-text-faint/40")} />
+									<Link href={`/systems/${sys.id}`} className="min-w-0 flex-1 truncate text-[13px] font-medium hover:underline">
+										{sys.name}
+									</Link>
+									<Button variant="outline" size="icon" aria-label="Delete"
+										onClick={() => void remove(sys.id, sys.name)}>
+										<Trash2 size={11} />
+									</Button>
+								</div>
+								{sys.host ? (
+									<p className="mb-2.5 truncate font-mono text-[10.5px] text-text-faint">
+										{sys.host} · {sys.cpuModel || `${sys.cores} cores`}
+										{l?.uptimeS ? ` · up ${fmtUptime(l.uptimeS)}` : ""}
+									</p>
+								) : (
+									<p className="mb-2.5 font-mono text-[10.5px] text-text-faint">waiting for agent…</p>
+								)}
+								<div className="flex flex-col gap-1.5">
+									{rows.map(([label, pct, txt]) => (
+										<div key={label} className="flex items-center gap-2">
+											<span className="w-7 font-mono text-[9.5px] uppercase text-text-faint">{label}</span>
+											<span className="flex-1"><Bar pct={pct} /></span>
+											<span className="w-24 text-right font-mono text-[10px] text-text-dim">{txt}</span>
+										</div>
+									))}
+								</div>
+							</div>
+						);
+					})}
+				</div>
+			)}
+
+			<Dialog open={dlgOpen} onOpenChange={setDlgOpen}>
+				<DialogContent>
+					<DialogHeader>
+						<DialogTitle>New system</DialogTitle>
+						<DialogDescription>Name the host, then run dash-agent on it with the issued token.</DialogDescription>
+					</DialogHeader>
+					{created ? (
+						<div className="flex flex-col gap-3">
+							<p className="text-[12px] text-text-dim">
+								Agent command for <span className="font-medium text-text">{created.name}</span>:
+							</p>
+							<div className="flex items-center gap-2">
+								<code className="flex-1 overflow-x-auto whitespace-nowrap rounded-[7px] border border-border bg-bg px-3 py-2 font-mono text-[11px]">
+									{agentCmd(created)}
+								</code>
+								<Button variant="outline" size="icon" aria-label="Copy"
+									onClick={() => void navigator.clipboard.writeText(agentCmd(created))}>
+									<Copy size={12} />
+								</Button>
+							</div>
+							<p className="text-[11px] text-text-faint">
+								The token identifies this system — keep it out of public repos.
+							</p>
+						</div>
+					) : (
+						<div className="flex flex-col gap-1.5">
+							<Label htmlFor="sys-name">Name</Label>
+							<Input id="sys-name" value={name} onChange={(e) => setName(e.target.value)}
+								placeholder="nas" autoFocus
+								onKeyDown={(e) => { if (e.key === "Enter") void create(); }} />
+						</div>
+					)}
+					<DialogFooter>
+						{created ? (
+							<Button onClick={() => setDlgOpen(false)}>Done</Button>
+						) : (
+							<>
+								<Button variant="outline" onClick={() => setDlgOpen(false)} disabled={busy}>Cancel</Button>
+								<Button onClick={() => void create()} disabled={busy || !name.trim()}>
+									{busy ? "Creating…" : "Create"}
+								</Button>
+							</>
+						)}
+					</DialogFooter>
+				</DialogContent>
+			</Dialog>
+		</main>
+	);
+}

apps/frontend/src/types.ts

@@ -11,6 +11,25 @@ export type Status = components["schemas"]["Status"];
 export type StatusMap = Record<string, Status>;
 export type ExportPayload = components["schemas"]["Export"];
 
+// Monitoring (merge program) — same generated-schema rule applies.
+export type Monitor = components["schemas"]["Monitor"];
+export type MonitorInput = components["schemas"]["MonitorInput"];
+export type MonitorView = components["schemas"]["MonitorView"];
+export type Heartbeat = components["schemas"]["Heartbeat"];
+export type Domain = components["schemas"]["Domain"];
+export type DomainInput = components["schemas"]["DomainInput"];
+export type DomainView = components["schemas"]["DomainView"];
+export type DomainCheck = components["schemas"]["DomainCheck"];
+export type System = components["schemas"]["System"];
+export type StatSample = components["schemas"]["StatSample"];
+/** Stats rows are StatSample plus the server-side timestamp. */
+export type SystemStat = StatSample & { ts?: string };
+export type Incident = components["schemas"]["Incident"];
+export type IncidentInput = components["schemas"]["IncidentInput"];
+export type MaintenanceWindow = components["schemas"]["MaintenanceWindow"];
+export type StatusPage = components["schemas"]["StatusPage"];
+export type PublicStatus = components["schemas"]["PublicStatus"];
+
 export type Theme = "dark" | "light";
 export type RendererName = "bento" | "cards" | "index" | "console";
 

apps/frontend/src/widgets/domain.tsx

@@ -0,0 +1,37 @@
+import type { WidgetData } from "@/widgets";
+import type { Item } from "@/types";
+import { cn } from "@/lib/utils";
+
+// Board tile for a tracked domain: favicon, name, expiry countdown.
+export function DomainWidget({ item, data, error }: {
+	item: Item;
+	data: WidgetData | undefined;
+	error: string | undefined;
+}) {
+	const days = typeof data?.daysUntilExpiry === "number" ? data.daysUntilExpiry : undefined;
+	const sslDays = typeof data?.sslDaysUntilExpiry === "number" ? data.sslDaysUntilExpiry : undefined;
+	const expiring = data?.expiring === true;
+	const domainId = typeof item.config?.domainId === "string" ? item.config.domainId : "";
+
+	return (
+		<a
+			href={domainId ? `/domains/${domainId}` : "/domains"}
+			className="flex w-full items-center gap-2.5 text-left"
+			onClick={(e) => e.stopPropagation()}
+		>
+			{typeof data?.faviconUrl === "string" && data.faviconUrl ? (
+				<img src={data.faviconUrl} alt="" className="size-4 shrink-0 rounded-sm" loading="lazy" />
+			) : null}
+			<span className="min-w-0 flex-1 truncate text-[12.5px] font-medium">
+				{typeof data?.name === "string" ? data.name : item.name}
+			</span>
+			<span className={cn(
+				"shrink-0 font-mono text-[10.5px]",
+				error ? "text-down" : expiring || (days !== undefined && days < 0) ? "text-down" : "text-text-faint",
+			)}>
+				{error ? "err" : days === undefined ? "…" : days < 0 ? "expired" : `${days}d`}
+				{sslDays !== undefined && sslDays <= 30 ? ` · ssl ${sslDays}d` : ""}
+			</span>
+		</a>
+	);
+}

apps/frontend/src/widgets/index.tsx

@@ -3,6 +3,9 @@ import type { Item } from "@/types";
 import { ClockWidget } from "@/widgets/clock";
 import { PiholeWidget, AdguardWidget } from "@/widgets/blocker";
 import { ImmichWidget } from "@/widgets/immich";
+import { MonitorWidget } from "@/widgets/monitor";
+import { DomainWidget } from "@/widgets/domain";
+import { SystemWidget } from "@/widgets/system";
 
 // WidgetHost seam: renderers own the tile chrome; this maps config.type to
 // the component that fills it. Adding a widget = one fetcher in Go + one
@@ -28,6 +31,9 @@ const registry: WidgetRegistry = {
 	pihole: { view: PiholeWidget },
 	adguard: { view: AdguardWidget },
 	immich: { view: ImmichWidget },
+	monitor: { view: MonitorWidget },
+	domain: { view: DomainWidget },
+	system: { view: SystemWidget },
 };
 
 export function cfgStr(item: Item, key: string): string {

apps/frontend/src/widgets/monitor.tsx

@@ -0,0 +1,38 @@
+import type { WidgetData } from "@/widgets";
+import type { Item } from "@/types";
+import { cn } from "@/lib/utils";
+
+// Board tile for an uptime monitor: status dot, uptime %, avg ping.
+// config.monitorId binds it; data comes from the monitor fetcher.
+export function MonitorWidget({ item, data, error }: {
+	item: Item;
+	data: WidgetData | undefined;
+	error: string | undefined;
+}) {
+	const status = typeof data?.status === "string" ? data.status : undefined;
+	const uptime = typeof data?.uptime24 === "number" ? data.uptime24 : undefined;
+	const ping = typeof data?.ping === "number" ? data.ping : undefined;
+	const monId = typeof item.config?.monitorId === "string" ? item.config.monitorId : "";
+
+	return (
+		<a
+			href={monId ? `/monitors/${monId}` : "/monitors"}
+			className="flex w-full items-center gap-2.5 text-left"
+			onClick={(e) => e.stopPropagation()}
+		>
+			<span
+				className={cn(
+					"size-1.5 shrink-0 rounded-full",
+					error ? "bg-down" : status === "up" ? "bg-up" : status === "down" ? "bg-down" : "bg-text-faint/40",
+				)}
+			/>
+			<span className="min-w-0 flex-1 truncate text-[12.5px] font-medium">
+				{typeof data?.name === "string" ? data.name : item.name}
+			</span>
+			<span className="shrink-0 font-mono text-[10.5px] text-text-faint">
+				{error ? "err" : uptime !== undefined ? `${uptime.toFixed(1)}%` : "…"}
+				{ping ? ` · ${Math.round(ping)}ms` : ""}
+			</span>
+		</a>
+	);
+}

apps/frontend/src/widgets/system.tsx

@@ -0,0 +1,60 @@
+import type { WidgetData } from "@/widgets";
+import type { Item } from "@/types";
+import { cn } from "@/lib/utils";
+
+// Board tile for a monitored system: status dot + cpu/mem/disk mini bars.
+// config.systemId binds it; data comes from the system fetcher.
+export function SystemWidget({ item, data, error }: {
+	item: Item;
+	data: WidgetData | undefined;
+	error: string | undefined;
+}) {
+	const status = typeof data?.status === "string" ? data.status : undefined;
+	const sysId = typeof item.config?.systemId === "string" ? item.config.systemId : "";
+	const cpu = typeof data?.cpu === "number" ? data.cpu : undefined;
+	const memTotal = typeof data?.memTotal === "number" ? data.memTotal : 0;
+	const memUsed = typeof data?.memUsed === "number" ? data.memUsed : 0;
+	const diskTotal = typeof data?.diskTotal === "number" ? data.diskTotal : 0;
+	const diskUsed = typeof data?.diskUsed === "number" ? data.diskUsed : 0;
+	const memPct = memTotal > 0 ? (memUsed / memTotal) * 100 : undefined;
+	const diskPct = diskTotal > 0 ? (diskUsed / diskTotal) * 100 : undefined;
+
+	const bar = (pct: number | undefined, label: string) => (
+		<span className="flex items-center gap-1" title={`${label}: ${pct !== undefined ? pct.toFixed(0) + "%" : "—"}`}>
+			<span className="font-mono text-[9px] uppercase text-text-faint">{label}</span>
+			<span className="h-1 w-8 overflow-hidden rounded-full bg-surface-hover">
+				<span
+					className={cn("block h-full rounded-full", pct !== undefined && pct > 90 ? "bg-down" : "bg-up")}
+					style={{ width: `${Math.min(pct ?? 0, 100)}%` }}
+				/>
+			</span>
+		</span>
+	);
+
+	return (
+		<a
+			href={sysId ? `/systems/${sysId}` : "/systems"}
+			className="flex w-full items-center gap-2.5 text-left"
+			onClick={(e) => e.stopPropagation()}
+		>
+			<span
+				className={cn(
+					"size-1.5 shrink-0 rounded-full",
+					error ? "bg-down" : status === "up" ? "bg-up" : status === "down" ? "bg-down" : "bg-text-faint/40",
+				)}
+			/>
+			<span className="min-w-0 flex-1 truncate text-[12.5px] font-medium">
+				{typeof data?.name === "string" ? data.name : item.name}
+			</span>
+			{error ? (
+				<span className="shrink-0 font-mono text-[10.5px] text-text-faint">err</span>
+			) : (
+				<span className="flex shrink-0 items-center gap-2">
+					{bar(cpu, "cpu")}
+					{bar(memPct, "mem")}
+					{bar(diskPct, "dsk")}
+				</span>
+			)}
+		</a>
+	);
+}

docs/announcement.md

@@ -0,0 +1,57 @@
+# v1.0.0 launch post — draft
+
+For r/selfhosted, HN Show, and similar. Edit freely before posting.
+
+---
+
+**Title:** Dash — a self-hosted homelab dashboard with monitoring built in.
+Single Go binary, no YAML, no auth.
+
+**Body:**
+
+I built Dash because my homelab had outgrown a bookmark page: I wanted service
+links, uptime checks, domain expiry, server stats, and a status page — without
+running five separate tools or maintaining a YAML file.
+
+What it does:
+
+- **Board** — drag-and-drop service grid, multiple layouts, dark/light, icon
+  upload. Imports your existing Homepage (`services.yml`), Homarr, or Dashy
+  config in one click.
+- **Monitors** — HTTP/TCP/ping/DNS/keyword/JSON-path checks plus push monitors
+  for cron jobs. Webhook alerts (Slack/Discord/ntfy). Uptime history.
+- **Domains** — WHOIS/RDAP, DNS, TLS certificate expiry, provider detection.
+  Inspired by Domain Locker, minus the paid APIs.
+- **Systems** — a ~4 MB static agent pushes CPU/mem/disk/net/temps/Docker
+  container states. Inspired by Beszel, push-JSON instead of SSH.
+- **Ops** — incidents, maintenance windows, public status pages, SVG badges,
+  Prometheus `/api/metrics`.
+
+Deployment is one container:
+
+```sh
+docker run -d -v ./data:/data -p 3000:3000 ghcr.io/dvorinka/dash:latest
+```
+
+SQLite inside, no database to babysit, no accounts. Deliberately no auth —
+it expects a trusted LAN or your own proxy in front.
+
+Stack: Go + Gin + SQLite (single static binary serving an embedded React UI).
+MIT licensed.
+
+Repo: https://github.com/Dvorinka/Dash
+Screenshots are in the README.
+
+Happy to answer questions — feedback welcome, especially on which monitor
+types or integrations to add next.
+
+---
+
+**HN variant (Show HN guidelines — terse):**
+
+Show HN: Dash – self-hosted homelab dashboard with monitoring, one Go binary
+
+Dash combines a service board, uptime monitors, domain/SSL watching, system
+metrics via a tiny push agent, and public status pages. Single container or
+single binary, SQLite storage, no YAML, no auth (LAN-trust model). MIT.
+https://github.com/Dvorinka/Dash

docs/configuration.md

@@ -0,0 +1,71 @@
+# Configuration
+
+Dash is configured from the UI. The only environment the server understands:
+
+| Variable | Default | Purpose |
+|---|---|---|
+| `DASH_PORT` | `8080` (`3000` in Docker) | listen port |
+| `DASH_DATA_DIR` | `./data` (`/data` in Docker) | SQLite + uploaded icons |
+| `DASH_DEV` | unset | `1` = dev mode: API only, no embedded UI |
+
+## Data directory
+
+```
+data/
+  dash.db        # SQLite — boards, monitors, domains, systems, ops
+  icons/         # uploaded service icons
+```
+
+Back up the directory to back up everything. `/api/export` produces a JSON
+snapshot; `/api/import/csv` bulk-loads monitors and domains from CSV.
+
+## Notifications
+
+**Settings → Notifications** holds one generic webhook URL
+(`notify_webhook`). On monitor up/down transitions and domain events, Dash
+POSTs a JSON payload with `event`, `name`, `text`, `content`, `message`, and
+`at` fields — shaped so Slack, Discord, and ntfy all render it sensibly.
+**Test** sends a `test` event. Delivery is async and non-fatal; failures are
+logged.
+
+## Monitors
+
+HTTP(s), TCP, ping (ICMP), DNS, keyword, JSON-path, and push types. Per-monitor
+interval, timeout, retries, headers/method/body, expected values, tags, and
+notes. Push monitors expose `POST /api/push/:token` for cron-style jobs — the
+monitor goes down if no push arrives within the expected window.
+
+## Domains
+
+WHOIS (RDAP first, TCP WHOIS fallback), DNS records, TLS certificate chain,
+and provider detection run daily and on demand. Expiry and certificate
+deadlines surface in the UI and through notifications.
+
+## Systems
+
+Bearer-token push ingest at `POST /api/systems/ingest`. A system is marked
+offline when no sample arrives within a few intervals. Stats are pruned during
+the hourly sweep.
+
+## Operations
+
+- **Incidents** — open/ack/resolve/close, with per-incident update timeline.
+  A monitor going down opens an incident automatically; recovery resolves it.
+- **Maintenance windows** — suppress monitor alerts for the window's scope.
+- **Status pages** — public, unauthenticated views at `/status/:slug` listing
+  selected monitors and systems with live state.
+- **Badges** — `GET /api/badge/monitor/:id.svg` and
+  `GET /api/badge/domain/:id.svg` for embedding status shields.
+- **Metrics** — `GET /api/metrics` in Prometheus exposition format.
+
+## Importers
+
+Settings → Import accepts:
+
+- Dash JSON export (full board restore)
+- Homepage `services.yml`
+- Homarr board JSON
+- Dashy `conf.yml`
+- CSV of monitors/domains (`/api/import/csv`)
+
+Foreign formats map onto sections, items, and URLs; unknown fields are dropped.

docs/installation.md

@@ -0,0 +1,124 @@
+# Installation
+
+Dash ships as a single container image or a single static binary. All state
+lives in one directory: a SQLite database and uploaded icons.
+
+## Docker (recommended)
+
+```sh
+docker run -d --name dash \
+  -v ./data:/data \
+  -p 3000:3000 \
+  --restart unless-stopped \
+  ghcr.io/dvorinka/dash:latest
+```
+
+Or compose:
+
+```yaml
+services:
+  dash:
+    image: ghcr.io/dvorinka/dash:latest
+    ports:
+      - "3000:3000"
+    volumes:
+      - ./data:/data
+    restart: unless-stopped
+```
+
+Open http://localhost:3000.
+
+To build the image locally instead of pulling:
+
+```sh
+docker compose up --build
+```
+
+## Binary
+
+Release archives contain a static `dash` binary (no CGO, no dependencies).
+
+```sh
+tar xzf dash_linux_amd64.tar.gz
+./dash   # listens on :8080, stores data in ./data
+```
+
+Set `DASH_PORT` and `DASH_DATA_DIR` to change the defaults.
+
+## dash-agent (system monitoring)
+
+The agent collects CPU, memory, disk, network, load, temperatures, and Docker
+container state, then pushes a JSON sample to Dash every few seconds.
+
+1. In the UI, go to **Systems → New system**, copy the generated token.
+2. Download the `dash-agent` binary for the host's architecture from the
+   release page, or build it:
+
+   ```sh
+   cd apps/backend && go build -o dash-agent ./cmd/dash-agent
+   ```
+
+3. Run it:
+
+   ```sh
+   dash-agent -url http://dash:3000 -token <token>
+   ```
+
+### Flags / environment
+
+| Flag | Env | Default | Purpose |
+|---|---|---|---|
+| `-url` | `DASH_URL` | — | Dash base URL |
+| `-token` | `DASH_TOKEN` | — | system token from the UI |
+| `-interval` | `DASH_INTERVAL` | `10` | push interval, seconds |
+| `-once` | — | `false` | print one sample and exit (no push) |
+
+If `/var/run/docker.sock` exists, container states are included automatically.
+
+### systemd
+
+`packaging/dash-agent.service` is a ready-made unit:
+
+```sh
+sudo install -m755 dash-agent /usr/local/bin/dash-agent
+sudo install -m644 packaging/dash-agent.service /etc/systemd/system/
+sudo mkdir -p /etc/dash
+printf 'DASH_URL=http://dash:3000\nDASH_TOKEN=<token>\n' | sudo tee /etc/dash/agent.env
+sudo systemctl enable --now dash-agent
+```
+
+### Docker (limited)
+
+`infra/Dockerfile.agent` builds a minimal agent image. A containerized agent
+only sees its own `/proc` — mount the host's procfs and use host PID mode for
+meaningful numbers:
+
+```sh
+docker run -d --name dash-agent --pid=host \
+  -v /proc:/host/proc:ro \
+  -v /var/run/docker.sock:/var/run/docker.sock:ro \
+  -e DASH_URL=http://dash:3000 -e DASH_TOKEN=<token> \
+  ghcr.io/dvorinka/dash-agent:latest
+```
+
+The systemd install above is the recommended path.
+
+## Reverse proxy
+
+Dash serves the UI and API on one port — a plain reverse proxy works:
+
+```nginx
+location / {
+    proxy_pass http://127.0.0.1:3000;
+    proxy_set_header Host $host;
+}
+```
+
+## Upgrading
+
+Pull the new image and restart, or replace the binary. Goose migrations run
+automatically on boot; `data/` carries forward.
+
+```sh
+docker pull ghcr.io/dvorinka/dash:latest && docker compose up -d
+```

docs/widgets.md

@@ -0,0 +1,89 @@
+# Widget development
+
+A widget is two pieces:
+
+1. a Go **fetcher** in `apps/backend/internal/widget/` that declares config
+   fields and pulls live data, and
+2. a React **view** in `apps/frontend/src/widgets/` that renders the payload
+   inside a tile.
+
+Renderers own the tile chrome — widgets never touch layout, drag-drop, or
+popovers.
+
+## Backend fetcher
+
+One file, registered in `init()`:
+
+```go
+package widget
+
+type pihole struct{}
+
+func init() { Register(pihole{}) }
+
+func (pihole) Meta() Type {
+	return Type{
+		Type:        "pihole",
+		Name:        "Pi-hole",
+		Description: "Queries and block rate",
+		Fields: []Field{
+			{Key: "endpoint", Label: "Endpoint", Placeholder: "http://pi.hole", Required: true},
+			{Key: "token", Label: "API token", Secret: true},
+		},
+	}
+}
+
+func (pihole) Fetch(ctx context.Context, cfg json.RawMessage) (any, error) {
+	// cfg holds the item's config JSON. Never log it — it may hold keys.
+}
+```
+
+- `Meta()` drives the add-widget dialog: `GET /api/widgets/types` returns
+  every registered type with its fields.
+- `Fetch` is called by `GET /api/widgets/:id/data`; responses are cached ~30s
+  in-process. Return any JSON-marshalable value — it reaches the frontend as
+  `data`.
+- Read config with the `cfgStr`/`cfgNum` helpers in the package.
+- Fetchers needing the database (monitor, domain, system) live in
+  `internal/api` and register via `widget.Register` at router setup — the
+  `widget` package stays a leaf with no DB dependency.
+
+## Frontend view
+
+One component in `apps/frontend/src/widgets/`, one line in the registry at
+`src/widgets/index.tsx`:
+
+```tsx
+export function PiholeWidget({ data, error }: { item: Item; data?: WidgetData; error?: string }) {
+	if (error) return <TileError msg={error} />;
+	if (!data) return <TileLoading />;
+	return <div>{data.blockedPercent}%</div>;
+}
+```
+
+```ts
+const registry: WidgetRegistry = {
+	pihole: { view: PiholeWidget },
+};
+```
+
+- `useWidgetData` polls `/api/widgets/:id/data` every 30s. `data` is the
+  fetcher's payload, `error` is a human-readable upstream failure.
+- Payloads are free-form; read fields defensively (values may be absent on
+  first paint).
+- `local: true` marks a widget as frontend-only (e.g. clock) — no fetcher, no
+  polling.
+
+## Config fields
+
+`Fields` in `Meta()` render inputs in the add-widget dialog. `Secret: true`
+masks the input. Config is stored in `items.config` JSON, sent back to the
+fetcher on every poll, and never logged.
+
+## Checklist
+
+- [ ] `apps/backend/internal/widget/<name>.go` — fetcher + `init()` + `Meta()`
+- [ ] `apps/frontend/src/widgets/<name>.tsx` — view component
+- [ ] registry entry in `src/widgets/index.tsx`
+- [ ] error and empty-data states render cleanly in the tile
+- [ ] upstream timeouts bounded (respect `ctx`, keep HTTP client timeouts)

infra/Dockerfile.agent

@@ -0,0 +1,15 @@
+# syntax=docker/dockerfile:1
+
+# Minimal dash-agent image. A containerized agent only sees its own /proc —
+# run with --pid=host and -v /proc:/host/proc for host metrics, or prefer the
+# systemd unit in packaging/.
+FROM golang:1.27-alpine AS build
+WORKDIR /src
+COPY apps/backend/go.mod apps/backend/go.sum ./
+RUN go mod download
+COPY apps/backend ./
+RUN CGO_ENABLED=0 go build -trimpath -ldflags="-s -w" -o /out/dash-agent ./cmd/dash-agent
+
+FROM gcr.io/distroless/static-debian12
+COPY --from=build /out/dash-agent /dash-agent
+ENTRYPOINT ["/dash-agent"]

package-lock.json

@@ -37,8 +37,10 @@
         "lucide-react": "^0.545.0",
         "react": "^18.3.1",
         "react-dom": "^18.3.1",
+        "recharts": "^3.10.1",
         "tailwind-merge": "^3.3.1",
-        "tw-animate-css": "^1.4.0"
+        "tw-animate-css": "^1.4.0",
+        "wouter": "^3.11.0"
       },
       "devDependencies": {
         "@tailwindcss/vite": "^4.1.13",
@@ -1986,6 +1988,32 @@
         "npm": ">=9.5.0"
       }
     },
+    "node_modules/@reduxjs/toolkit": {
+      "version": "2.12.0",
+      "resolved": "https://registry.npmjs.org/@reduxjs/toolkit/-/toolkit-2.12.0.tgz",
+      "integrity": "sha512-KiT+RzZbp6mQET+Mg+h2c97+9j1sNflUxQkIHI7Yuzf6Peu+OYpmkn6nbHWmLLWj+1ZODUJFwGZ7gx3L9R9EOw==",
+      "license": "MIT",
+      "dependencies": {
+        "@standard-schema/spec": "^1.0.0",
+        "@standard-schema/utils": "^0.3.0",
+        "immer": "^11.0.0",
+        "redux": "^5.0.1",
+        "redux-thunk": "^3.1.0",
+        "reselect": "^5.1.0"
+      },
+      "peerDependencies": {
+        "react": "^16.9.0 || ^17.0.0 || ^18 || ^19",
+        "react-redux": "^7.2.1 || ^8.1.3 || ^9.0.0"
+      },
+      "peerDependenciesMeta": {
+        "react": {
+          "optional": true
+        },
+        "react-redux": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/@rolldown/pluginutils": {
       "version": "1.0.0-rc.3",
       "resolved": "https://registry.npmjs.org/@rolldown/pluginutils/-/pluginutils-1.0.0-rc.3.tgz",
@@ -2382,6 +2410,18 @@
         "win32"
       ]
     },
+    "node_modules/@standard-schema/spec": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@standard-schema/spec/-/spec-1.1.0.tgz",
+      "integrity": "sha512-l2aFy5jALhniG5HgqrD6jXLi/rUWrKvqN/qJx6yoJsgKhblVd+iqqU4RCXavm/jPityDo5TCvKMnpjKnOriy0w==",
+      "license": "MIT"
+    },
+    "node_modules/@standard-schema/utils": {
+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/@standard-schema/utils/-/utils-0.3.0.tgz",
+      "integrity": "sha512-e7Mew686owMaPJVNNLs55PUvgz371nKgwsc4vxE49zsODpJEnxgxRo2y/OKrqueavXgZNMDVj3DdHFlaSAeU8g==",
+      "license": "MIT"
+    },
     "node_modules/@tailwindcss/node": {
       "version": "4.3.3",
       "resolved": "https://registry.npmjs.org/@tailwindcss/node/-/node-4.3.3.tgz",
@@ -2711,6 +2751,69 @@
         "@babel/types": "^7.28.2"
       }
     },
+    "node_modules/@types/d3-array": {
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/@types/d3-array/-/d3-array-3.2.2.tgz",
+      "integrity": "sha512-hOLWVbm7uRza0BYXpIIW5pxfrKe0W+D5lrFiAEYR+pb6w3N2SwSMaJbXdUfSEv+dT4MfHBLtn5js0LAWaO6otw==",
+      "license": "MIT"
+    },
+    "node_modules/@types/d3-color": {
+      "version": "3.1.3",
+      "resolved": "https://registry.npmjs.org/@types/d3-color/-/d3-color-3.1.3.tgz",
+      "integrity": "sha512-iO90scth9WAbmgv7ogoq57O9YpKmFBbmoEoCHDB2xMBY0+/KVrqAaCDyCE16dUspeOvIxFFRI+0sEtqDqy2b4A==",
+      "license": "MIT"
+    },
+    "node_modules/@types/d3-ease": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/@types/d3-ease/-/d3-ease-3.0.2.tgz",
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+      "license": "MIT"
+    },
+    "node_modules/@types/d3-interpolate": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/@types/d3-interpolate/-/d3-interpolate-3.0.4.tgz",
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+      "license": "MIT",
+      "dependencies": {
+        "@types/d3-color": "*"
+      }
+    },
+    "node_modules/@types/d3-path": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/@types/d3-path/-/d3-path-3.1.1.tgz",
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+      "license": "MIT"
+    },
+    "node_modules/@types/d3-scale": {
+      "version": "4.0.9",
+      "resolved": "https://registry.npmjs.org/@types/d3-scale/-/d3-scale-4.0.9.tgz",
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+      "license": "MIT",
+      "dependencies": {
+        "@types/d3-time": "*"
+      }
+    },
+    "node_modules/@types/d3-shape": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/@types/d3-shape/-/d3-shape-3.2.0.tgz",
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+      "license": "MIT",
+      "dependencies": {
+        "@types/d3-path": "*"
+      }
+    },
+    "node_modules/@types/d3-time": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/@types/d3-time/-/d3-time-3.0.4.tgz",
+      "integrity": "sha512-yuzZug1nkAAaBlBBikKZTgzCeA+k1uy4ZFwWANOfKw5z5LRhV0gNA7gNkKm7HoK+HRN0wX3EkxGk0fpbWhmB7g==",
+      "license": "MIT"
+    },
+    "node_modules/@types/d3-timer": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/@types/d3-timer/-/d3-timer-3.0.2.tgz",
+      "integrity": "sha512-Ps3T8E8dZDam6fUyNiMkekK3XUsaUEik+idO9/YjPtfj2qruF8tFBXS7XhtE4iIXBLxhmLjP3SXpLhVf21I9Lw==",
+      "license": "MIT"
+    },
     "node_modules/@types/estree": {
       "version": "1.0.9",
       "resolved": "https://registry.npmjs.org/@types/estree/-/estree-1.0.9.tgz",
@@ -2756,6 +2859,12 @@
         "@types/react": "^18.0.0"
       }
     },
+    "node_modules/@types/use-sync-external-store": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/@types/use-sync-external-store/-/use-sync-external-store-0.0.6.tgz",
+      "integrity": "sha512-zFDAD+tlpf2r4asuHEj0XH6pY6i0g5NeAHPn+15wk3BV6JA69eERFXC1gyGThDkVa1zCyKr5jox1+2LbV/AMLg==",
+      "license": "MIT"
+    },
     "node_modules/@vitejs/plugin-react": {
       "version": "5.2.0",
       "resolved": "https://registry.npmjs.org/@vitejs/plugin-react/-/plugin-react-5.2.0.tgz",
@@ -2950,6 +3059,127 @@
       "devOptional": true,
       "license": "MIT"
     },
+    "node_modules/d3-array": {
+      "version": "3.2.4",
+      "resolved": "https://registry.npmjs.org/d3-array/-/d3-array-3.2.4.tgz",
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+      "license": "ISC",
+      "dependencies": {
+        "internmap": "1 - 2"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-color": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/d3-color/-/d3-color-3.1.0.tgz",
+      "integrity": "sha512-zg/chbXyeBtMQ1LbD/WSoW2DpC3I0mpmPdW+ynRTj/x2DAWYrIY7qeZIHidozwV24m4iavr15lNwIwLxRmOxhA==",
+      "license": "ISC",
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-ease": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-ease/-/d3-ease-3.0.1.tgz",
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+      "license": "BSD-3-Clause",
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-format": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/d3-format/-/d3-format-3.1.2.tgz",
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+      "license": "ISC",
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-interpolate": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-interpolate/-/d3-interpolate-3.0.1.tgz",
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+      "license": "ISC",
+      "dependencies": {
+        "d3-color": "1 - 3"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-path": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/d3-path/-/d3-path-3.1.0.tgz",
+      "integrity": "sha512-p3KP5HCf/bvjBSSKuXid6Zqijx7wIfNW+J/maPs+iwR35at5JCbLUT0LzF1cnjbCHWhqzQTIN2Jpe8pRebIEFQ==",
+      "license": "ISC",
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-scale": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/d3-scale/-/d3-scale-4.0.2.tgz",
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+      "license": "ISC",
+      "dependencies": {
+        "d3-array": "2.10.0 - 3",
+        "d3-format": "1 - 3",
+        "d3-interpolate": "1.2.0 - 3",
+        "d3-time": "2.1.1 - 3",
+        "d3-time-format": "2 - 4"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-shape": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/d3-shape/-/d3-shape-3.2.0.tgz",
+      "integrity": "sha512-SaLBuwGm3MOViRq2ABk3eLoxwZELpH6zhl3FbAoJ7Vm1gofKx6El1Ib5z23NUEhF9AsGl7y+dzLe5Cw2AArGTA==",
+      "license": "ISC",
+      "dependencies": {
+        "d3-path": "^3.1.0"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-time": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/d3-time/-/d3-time-3.1.0.tgz",
+      "integrity": "sha512-VqKjzBLejbSMT4IgbmVgDjpkYrNWUYJnbCGo874u7MMKIWsILRX+OpX/gTk8MqjpT1A/c6HY2dCA77ZN0lkQ2Q==",
+      "license": "ISC",
+      "dependencies": {
+        "d3-array": "2 - 3"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-time-format": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/d3-time-format/-/d3-time-format-4.1.0.tgz",
+      "integrity": "sha512-dJxPBlzC7NugB2PDLwo9Q8JiTR3M3e4/XANkreKSUxF8vvXKqm1Yfq4Q5dl8budlunRVlUUaDUgFt7eA8D6NLg==",
+      "license": "ISC",
+      "dependencies": {
+        "d3-time": "1 - 3"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-timer": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-timer/-/d3-timer-3.0.1.tgz",
+      "integrity": "sha512-ndfJ/JxxMd3nw31uyKoY2naivF+r29V+Lc0svZxe1JvvIRmi8hUsrMvdOwgS1o6uBHmiz91geQ0ylPP0aj1VUA==",
+      "license": "ISC",
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/debug": {
       "version": "4.4.3",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.3.tgz",
@@ -2968,6 +3198,12 @@
         }
       }
     },
+    "node_modules/decimal.js-light": {
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/decimal.js-light/-/decimal.js-light-2.5.1.tgz",
+      "integrity": "sha512-qIMFpTMZmny+MMIitAB6D7iVPEorVw6YQRWkvarTkT4tBeSLLiHzcwj6q0MmYSFCiVpiqPJTJEYIrpcPzVEIvg==",
+      "license": "MIT"
+    },
     "node_modules/detect-libc": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/detect-libc/-/detect-libc-2.1.2.tgz",
@@ -3005,6 +3241,18 @@
         "node": ">=10.13.0"
       }
     },
+    "node_modules/es-toolkit": {
+      "version": "1.52.0",
+      "resolved": "https://registry.npmjs.org/es-toolkit/-/es-toolkit-1.52.0.tgz",
+      "integrity": "sha512-XTNEJQh1tY1ZJVcf6ayP/2n4ZPyaHlW2FWs7xvw5ddPuhUVjLD3olQVQS7kf58JbAB48iL0uL/jerTrjtV3lDA==",
+      "license": "MIT",
+      "workspaces": [
+        "docs",
+        "benchmarks",
+        "tests/types",
+        "tests/browser-compat"
+      ]
+    },
     "node_modules/esbuild": {
       "version": "0.28.2",
       "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.28.2.tgz",
@@ -3057,6 +3305,12 @@
         "node": ">=6"
       }
     },
+    "node_modules/eventemitter3": {
+      "version": "5.0.4",
+      "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-5.0.4.tgz",
+      "integrity": "sha512-mlsTRyGaPBjPedk6Bvw+aqbsXDtoAyAzm5MO7JgU+yVRyMQ5O8bD4Kcci7BS85f93veegeCPkL8R4GLClnjLFw==",
+      "license": "MIT"
+    },
     "node_modules/fast-deep-equal": {
       "version": "3.1.3",
       "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
@@ -3137,6 +3391,16 @@
         "node": ">= 14"
       }
     },
+    "node_modules/immer": {
+      "version": "11.1.18",
+      "resolved": "https://registry.npmjs.org/immer/-/immer-11.1.18.tgz",
+      "integrity": "sha512-EQyQtLiYW029lyoczMl/Hh4Xu7cDecSc58JRYpHyL4tIAu3eqd1yJzQX04d2BZHDkzFFvm6qJEJWOtfDSWAXbQ==",
+      "license": "MIT",
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/immer"
+      }
+    },
     "node_modules/index-to-position": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/index-to-position/-/index-to-position-1.2.0.tgz",
@@ -3150,6 +3414,15 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/internmap": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/internmap/-/internmap-2.0.3.tgz",
+      "integrity": "sha512-5Hh7Y1wQbvY5ooGgPbDaL5iYLAPzMTUrjMulskHLH6wnv/A+1q5rgEaiuqEjB+oxGXIVZs1FF+R/KPN3ZSQYYg==",
+      "license": "ISC",
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/jiti": {
       "version": "2.7.0",
       "resolved": "https://registry.npmjs.org/jiti/-/jiti-2.7.0.tgz",
@@ -3782,6 +4055,36 @@
         "react": "^18.3.1"
       }
     },
+    "node_modules/react-is": {
+      "version": "19.3.0",
+      "resolved": "https://registry.npmjs.org/react-is/-/react-is-19.3.0.tgz",
+      "integrity": "sha512-UpMYezM4v5/18F28aC66AEsjXIgE02kyEMH6yLdgLXu/UTfa1Ntwck/nNLrbqJsEXW7gPb0coNO9FQse9WTovA==",
+      "license": "MIT",
+      "peer": true
+    },
+    "node_modules/react-redux": {
+      "version": "9.3.0",
+      "resolved": "https://registry.npmjs.org/react-redux/-/react-redux-9.3.0.tgz",
+      "integrity": "sha512-KQopgqFo/p/fgmAs5qz6p5RWaNAzq40WAu7fJIXnQpYxFPbJYtsJPWvGeF2rOBaY/kEuV77AVsX8TsQzKm+A/g==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/use-sync-external-store": "^0.0.6",
+        "use-sync-external-store": "^1.4.0"
+      },
+      "peerDependencies": {
+        "@types/react": "^18.2.25 || ^19",
+        "react": "^18.0 || ^19",
+        "redux": "^5.0.0"
+      },
+      "peerDependenciesMeta": {
+        "@types/react": {
+          "optional": true
+        },
+        "redux": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/react-refresh": {
       "version": "0.18.0",
       "resolved": "https://registry.npmjs.org/react-refresh/-/react-refresh-0.18.0.tgz",
@@ -3861,6 +4164,60 @@
         }
       }
     },
+    "node_modules/recharts": {
+      "version": "3.10.1",
+      "resolved": "https://registry.npmjs.org/recharts/-/recharts-3.10.1.tgz",
+      "integrity": "sha512-QXFrvt6IVcw7eeZCoyXTwkIJAX3Dv1nyVhMicXJ47GsGDDpcN8z6o644DibE9XjpBTThtsomLKnTV6lc+cVFUA==",
+      "license": "MIT",
+      "workspaces": [
+        "www"
+      ],
+      "dependencies": {
+        "@reduxjs/toolkit": "^1.9.0 || 2.x.x",
+        "clsx": "^2.1.1",
+        "decimal.js-light": "^2.5.1",
+        "es-toolkit": "^1.39.3",
+        "eventemitter3": "^5.0.1",
+        "immer": "^11.1.8",
+        "react-redux": "8.x.x || 9.x.x",
+        "reselect": "5.2.0",
+        "tiny-invariant": "^1.3.3",
+        "use-sync-external-store": "^1.2.2",
+        "victory-vendor": "^37.0.2"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "peerDependencies": {
+        "react": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0",
+        "react-dom": "^16.0.0 || ^17.0.0 || ^18.0.0 || ^19.0.0",
+        "react-is": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0"
+      }
+    },
+    "node_modules/redux": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/redux/-/redux-5.0.1.tgz",
+      "integrity": "sha512-M9/ELqF6fy8FwmkpnF0S3YKOqMyoWJ4+CS5Efg2ct3oY9daQvd/Pc71FpGZsVsbl3Cpb+IIcjBDUnnyBdQbq4w==",
+      "license": "MIT"
+    },
+    "node_modules/redux-thunk": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/redux-thunk/-/redux-thunk-3.1.0.tgz",
+      "integrity": "sha512-NW2r5T6ksUKXCabzhL9z+h206HQw/NJkcLm1GPImRQ8IzfXwRGqjVhKJGauHirT0DAuyy6hjdnMZaRoAcy0Klw==",
+      "license": "MIT",
+      "peerDependencies": {
+        "redux": "^5.0.0"
+      }
+    },
+    "node_modules/regexparam": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/regexparam/-/regexparam-3.0.0.tgz",
+      "integrity": "sha512-RSYAtP31mvYLkAHrOlh25pCNQ5hWnT106VukGaaFfuJrZFkGRX5GhUAdPqpSDXxOhA2c4akmRuplv1mRqnBn6Q==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/require-from-string": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/require-from-string/-/require-from-string-2.0.2.tgz",
@@ -3871,6 +4228,12 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/reselect": {
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/reselect/-/reselect-5.2.0.tgz",
+      "integrity": "sha512-AgZ3UOZm3YndfrJ4OYjgrT7bmCm/1iqkjvEfH/oYjzh6PD2qw4QuT3jjnXIrpdt4MTpMXclMT3lXbmRY+XRakw==",
+      "license": "MIT"
+    },
     "node_modules/rollup": {
       "version": "4.63.3",
       "resolved": "https://registry.npmjs.org/rollup/-/rollup-4.63.3.tgz",
@@ -3990,6 +4353,12 @@
         "url": "https://opencollective.com/webpack"
       }
     },
+    "node_modules/tiny-invariant": {
+      "version": "1.3.3",
+      "resolved": "https://registry.npmjs.org/tiny-invariant/-/tiny-invariant-1.3.3.tgz",
+      "integrity": "sha512-+FbBPE1o9QAYvviau/qC5SE3caw21q3xkvWKBtja5vgqOWIHHJ3ioaq1VPfn/Szqctz2bU/oYeKd9/z5BL+PVg==",
+      "license": "MIT"
+    },
     "node_modules/tinyglobby": {
       "version": "0.2.17",
       "resolved": "https://registry.npmjs.org/tinyglobby/-/tinyglobby-0.2.17.tgz",
@@ -4137,6 +4506,37 @@
         }
       }
     },
+    "node_modules/use-sync-external-store": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/use-sync-external-store/-/use-sync-external-store-1.7.0.tgz",
+      "integrity": "sha512-6L+EeigHMQhdaIPNIFUKwfWJSwWFQ8gJbJ2DLOs5sDIegTwR9fRxvnM3uciHKjIZhFz+KAv2emhWMRvDmMcY8A==",
+      "license": "MIT",
+      "peerDependencies": {
+        "react": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0"
+      }
+    },
+    "node_modules/victory-vendor": {
+      "version": "37.3.6",
+      "resolved": "https://registry.npmjs.org/victory-vendor/-/victory-vendor-37.3.6.tgz",
+      "integrity": "sha512-SbPDPdDBYp+5MJHhBCAyI7wKM3d5ivekigc2Dk2s7pgbZ9wIgIBYGVw4zGHBml/qTFbexrofXW6Gu4noGxrOwQ==",
+      "license": "MIT AND ISC",
+      "dependencies": {
+        "@types/d3-array": "^3.0.3",
+        "@types/d3-ease": "^3.0.0",
+        "@types/d3-interpolate": "^3.0.1",
+        "@types/d3-scale": "^4.0.2",
+        "@types/d3-shape": "^3.1.0",
+        "@types/d3-time": "^3.0.0",
+        "@types/d3-timer": "^3.0.0",
+        "d3-array": "^3.1.6",
+        "d3-ease": "^3.0.1",
+        "d3-interpolate": "^3.0.1",
+        "d3-scale": "^4.0.2",
+        "d3-shape": "^3.1.0",
+        "d3-time": "^3.0.0",
+        "d3-timer": "^3.0.1"
+      }
+    },
     "node_modules/vite": {
       "version": "7.3.6",
       "resolved": "https://registry.npmjs.org/vite/-/vite-7.3.6.tgz",
@@ -4212,6 +4612,19 @@
         }
       }
     },
+    "node_modules/wouter": {
+      "version": "3.11.0",
+      "resolved": "https://registry.npmjs.org/wouter/-/wouter-3.11.0.tgz",
+      "integrity": "sha512-xyMLHhytdGhIjXVRcSjeYbXd7TR1lrxVTPLGBWmmyW52ZuWVQ1jXmsgoJ4G5s4tjloJCq7h4i2eREljWUQ4+/A==",
+      "license": "Unlicense",
+      "dependencies": {
+        "regexparam": "^3.0.0",
+        "use-sync-external-store": "^1.0.0"
+      },
+      "peerDependencies": {
+        "react": ">=16.8.0"
+      }
+    },
     "node_modules/yallist": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.1.1.tgz",

packaging/dash-agent.service

@@ -0,0 +1,18 @@
+[Unit]
+Description=Dash system monitoring agent
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+EnvironmentFile=/etc/dash/agent.env
+ExecStart=/usr/local/bin/dash-agent
+Restart=always
+RestartSec=5
+
+# Reads /proc, /sys, and (if present) the Docker socket.
+ProtectHome=true
+NoNewPrivileges=true
+
+[Install]
+WantedBy=multi-user.target