feat(api): phase 5 — alerts, agent depth, subdomains, auth, boards

P5b: notifier transport registry (webhook/slack/discord/telegram/
gotify/ntfy/smtp via net/smtp), per-monitor+domain alert rules
(failsBeforeDown, latencyWarn, certDays, mute).

P5c: per-container cpu/mem, optional SMART/ZFS/GPU exec-or-skip
collectors, crt.sh subdomain discovery with daily sweep.

P5d: opt-in auth (bcrypt, sqlite sessions, 7d rotating cookie, login
rate limit, public-route bypass) and multiple boards (boards table,
sections.board_id, /api/boards CRUD, slug routing).

Authored By: TDvorak <[email protected]>

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

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

@@ -0,0 +1,121 @@
+package main
+
+// Docker collector: container liveness plus per-container CPU/memory from
+// /containers/{id}/stats?stream=false. All best-effort — no socket, no data.
+
+import (
+	"context"
+	"encoding/json"
+	"io"
+	"net"
+	"net/http"
+	"strings"
+	"sync"
+	"time"
+)
+
+const dockerSock = "/var/run/docker.sock"
+
+var dockerClient = &http.Client{
+	Timeout: 4 * time.Second,
+	Transport: &http.Transport{
+		DialContext: func(ctx context.Context, _, _ string) (net.Conn, error) {
+			return (&net.Dialer{Timeout: 2 * time.Second}).DialContext(ctx, "unix", dockerSock)
+		},
+	},
+}
+
+// dockerStatsJSON is the subset of /containers/{id}/stats we consume.
+type dockerStatsJSON struct {
+	CPUStats struct {
+		CPUUsage struct {
+			TotalUsage uint64 `json:"total_usage"`
+		} `json:"cpu_usage"`
+		SystemCPUUsage uint64 `json:"system_cpu_usage"`
+		OnlineCPUs     uint32 `json:"online_cpus"`
+	} `json:"cpu_stats"`
+	PreCPUStats struct {
+		CPUUsage struct {
+			TotalUsage uint64 `json:"total_usage"`
+		} `json:"cpu_usage"`
+		SystemCPUUsage uint64 `json:"system_cpu_usage"`
+	} `json:"precpu_stats"`
+	MemoryStats struct {
+		Usage uint64 `json:"usage"`
+		Limit uint64 `json:"limit"`
+	} `json:"memory_stats"`
+}
+
+// containerCPUPct applies the Docker dashboard formula: cpu delta over
+// system delta, scaled by online CPUs. 0 when deltas don't advance.
+func containerCPUPct(s *dockerStatsJSON) float64 {
+	cpuDelta := float64(s.CPUStats.CPUUsage.TotalUsage) - float64(s.PreCPUStats.CPUUsage.TotalUsage)
+	sysDelta := float64(s.CPUStats.SystemCPUUsage) - float64(s.PreCPUStats.SystemCPUUsage)
+	online := s.CPUStats.OnlineCPUs
+	if online == 0 {
+		online = 1
+	}
+	if cpuDelta <= 0 || sysDelta <= 0 {
+		return 0
+	}
+	return cpuDelta / sysDelta * float64(online) * 100
+}
+
+// readContainers lists containers and fans out to per-container stats.
+// Stats fetches are bounded: 8 concurrent, each under the client timeout.
+func readContainers() []containerStat {
+	if _, err := net.DialTimeout("unix", dockerSock, time.Second); err != nil {
+		return nil
+	}
+	res, err := dockerClient.Get("http://d/containers/json?all=1")
+	if err != nil {
+		return nil
+	}
+	defer res.Body.Close()
+	var raw []struct {
+		ID    string   `json:"Id"`
+		Names []string `json:"Names"`
+		State string   `json:"State"`
+	}
+	if json.NewDecoder(io.LimitReader(res.Body, 4<<20)).Decode(&raw) != nil {
+		return nil
+	}
+	out := make([]containerStat, len(raw))
+	var wg sync.WaitGroup
+	sem := make(chan struct{}, 8)
+	for i, r := range raw {
+		name := ""
+		if len(r.Names) > 0 {
+			name = strings.TrimPrefix(r.Names[0], "/")
+		}
+		out[i] = containerStat{Name: name, State: r.State}
+		if r.State != "running" || r.ID == "" {
+			continue
+		}
+		wg.Add(1)
+		sem <- struct{}{}
+		go func(i int, id string) {
+			defer wg.Done()
+			defer func() { <-sem }()
+			fillContainerStats(&out[i], id)
+		}(i, r.ID)
+	}
+	wg.Wait()
+	return out
+}
+
+// fillContainerStats fetches one container's one-shot stats into cs.
+func fillContainerStats(cs *containerStat, id string) {
+	res, err := dockerClient.Get("http://d/containers/" + id + "/stats?stream=false")
+	if err != nil {
+		return
+	}
+	defer res.Body.Close()
+	var st dockerStatsJSON
+	if json.NewDecoder(io.LimitReader(res.Body, 4<<20)).Decode(&st) != nil {
+		return
+	}
+	cs.CPU = containerCPUPct(&st)
+	cs.MemUsed = float64(st.MemoryStats.Usage)
+	cs.MemLimit = float64(st.MemoryStats.Limit)
+}

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

@@ -0,0 +1,230 @@
+package main
+
+// Optional collectors: SMART (smartctl), ZFS (zpool), GPU (nvidia-smi or
+// /sys/class/drm). Every collector is exec-or-skip — missing tools or
+// permissions produce nil, never errors, and each exec carries a timeout so a
+// wedged tool can't stall reporting.
+
+import (
+	"context"
+	"encoding/json"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// runOut executes a command with a timeout; empty output on any failure.
+func runOut(timeout time.Duration, name string, args ...string) []byte {
+	if _, err := exec.LookPath(name); err != nil {
+		return nil
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), timeout)
+	defer cancel()
+	out, err := exec.CommandContext(ctx, name, args...).Output()
+	if err != nil {
+		return nil
+	}
+	return out
+}
+
+// ---------- SMART ----------
+
+type smartctlScan struct {
+	Devices []struct {
+		Name string `json:"name"`
+	} `json:"devices"`
+}
+
+type smartctlAll struct {
+	ModelName    string `json:"model_name"`
+	SmartStatus  *struct {
+		Passed bool `json:"passed"`
+	} `json:"smart_status"`
+	Temperature *struct {
+		Current float64 `json:"current"`
+	} `json:"temperature"`
+}
+
+// readSMART scans devices via smartctl -j --scan, then reads each drive.
+// Needs smartmontools installed and usually root or sudo rights for /dev.
+func readSMART() []smartDisk {
+	scan := runOut(5*time.Second, "smartctl", "-j", "--scan")
+	if scan == nil {
+		return nil
+	}
+	var sc smartctlScan
+	if json.Unmarshal(scan, &sc) != nil || len(sc.Devices) == 0 {
+		return nil
+	}
+	out := make([]smartDisk, 0, len(sc.Devices))
+	for i, d := range sc.Devices {
+		if i >= 8 { // bound the fan-out
+			break
+		}
+		b := runOut(4*time.Second, "smartctl", "-j", "-a", d.Name)
+		if b == nil {
+			continue
+		}
+		var a smartctlAll
+		if json.Unmarshal(b, &a) != nil {
+			continue
+		}
+		sd := smartDisk{Device: d.Name, Model: a.ModelName}
+		if a.SmartStatus != nil {
+			p := a.SmartStatus.Passed
+			sd.Passed = &p
+		}
+		if a.Temperature != nil {
+			sd.TempC = a.Temperature.Current
+		}
+		out = append(out, sd)
+	}
+	return out
+}
+
+// ---------- ZFS ----------
+
+// readZFS prefers `zpool list -j` (OpenZFS 2.3+), falls back to the stable
+// `-H -p` text format. Parse failures degrade to nil.
+func readZFS() []zfsPool {
+	if b := runOut(4*time.Second, "zpool", "list", "-j", "--json-int",
+		"-o", "name,health,size,free"); b != nil {
+		if pools := parseZpoolJSON(b); pools != nil {
+			return pools
+		}
+	}
+	return parseZpoolText(runOut(4*time.Second,
+		"zpool", "list", "-H", "-p", "-o", "name,health,size,free"))
+}
+
+// parseZpoolJSON reads {"pools":{"name":{"properties":{...}}}}.
+func parseZpoolJSON(b []byte) []zfsPool {
+	var doc struct {
+		Pools map[string]struct {
+			Properties map[string]struct {
+				Value any `json:"value"`
+			} `json:"properties"`
+		} `json:"pools"`
+	}
+	if json.Unmarshal(b, &doc) != nil || len(doc.Pools) == 0 {
+		return nil
+	}
+	var out []zfsPool
+	num := func(v any) float64 {
+		switch n := v.(type) {
+		case float64:
+			return n
+		case string:
+			f, _ := strconv.ParseFloat(n, 64)
+			return f
+		}
+		return 0
+	}
+	for name, p := range doc.Pools {
+		z := zfsPool{Name: name}
+		if v, ok := p.Properties["health"]; ok {
+			if s, ok := v.Value.(string); ok {
+				z.Health = s
+			}
+		}
+		if v, ok := p.Properties["size"]; ok {
+			z.Size = num(v.Value)
+		}
+		if v, ok := p.Properties["free"]; ok {
+			z.Free = num(v.Value)
+		}
+		out = append(out, z)
+	}
+	return out
+}
+
+// parseZpoolText reads `zpool list -H -p` rows: name\thealth\tsize\tfree.
+func parseZpoolText(b []byte) []zfsPool {
+	var out []zfsPool
+	for _, line := range strings.Split(string(b), "\n") {
+		f := strings.Split(line, "\t")
+		if len(f) < 4 {
+			continue
+		}
+		size, _ := strconv.ParseFloat(f[2], 64)
+		free, _ := strconv.ParseFloat(f[3], 64)
+		out = append(out, zfsPool{Name: f[0], Health: f[1], Size: size, Free: free})
+	}
+	return out
+}
+
+// ---------- GPU ----------
+
+// readGPU prefers nvidia-smi (CSV query); otherwise walks /sys/class/drm for
+// AMD/Intel cards exposing gpu_busy_percent and hwmon temps.
+func readGPU() []gpuStat {
+	if _, err := exec.LookPath("nvidia-smi"); err == nil {
+		return readNvidiaGPU()
+	}
+	return readGPUSysfs()
+}
+
+func readNvidiaGPU() []gpuStat {
+	return parseNvidiaCSV(runOut(4*time.Second, "nvidia-smi",
+		"--query-gpu=name,temperature.gpu,utilization.gpu,memory.used,memory.total",
+		"--format=csv,noheader,nounits"))
+}
+
+// parseNvidiaCSV reads rows: name, tempC, util%, memUsed MiB, memTotal MiB.
+func parseNvidiaCSV(b []byte) []gpuStat {
+	var out []gpuStat
+	for _, line := range strings.Split(strings.TrimSpace(string(b)), "\n") {
+		f := strings.Split(line, ",")
+		if len(f) < 5 {
+			continue
+		}
+		g := gpuStat{Name: strings.TrimSpace(f[0])}
+		g.TempC, _ = strconv.ParseFloat(strings.TrimSpace(f[1]), 64)
+		g.UtilPct, _ = strconv.ParseFloat(strings.TrimSpace(f[2]), 64)
+		g.MemUsed, _ = strconv.ParseFloat(strings.TrimSpace(f[3]), 64)
+		g.MemTotal, _ = strconv.ParseFloat(strings.TrimSpace(f[4]), 64)
+		g.MemUsed *= 1 << 20
+		g.MemTotal *= 1 << 20
+		out = append(out, g)
+	}
+	return out
+}
+
+// readGPUSysfs pulls util/temp for each card from DRM sysfs.
+func readGPUSysfs() []gpuStat {
+	cards, _ := filepath.Glob("/sys/class/drm/card[0-9]")
+	var out []gpuStat
+	for _, card := range cards {
+		dev := card + "/device"
+		g := gpuStat{Name: filepath.Base(card)}
+		if b, err := os.ReadFile(dev + "/gpu_busy_percent"); err == nil {
+			g.UtilPct, _ = strconv.ParseFloat(strings.TrimSpace(string(b)), 64)
+		}
+		// hwmon: first temp1_input under device/hwmon/hwmonN.
+		if hws, err := filepath.Glob(dev + "/hwmon/hwmon*"); err == nil {
+			for _, hw := range hws {
+				if b, err := os.ReadFile(hw + "/temp1_input"); err == nil {
+					if milli, err := strconv.ParseFloat(strings.TrimSpace(string(b)), 64); err == nil {
+						g.TempC = milli / 1000
+					}
+					break
+				}
+			}
+		}
+		// Driver name via uevent DRIVER= for a friendlier label.
+		if b, err := os.ReadFile(dev + "/uevent"); err == nil {
+			for _, line := range strings.Split(string(b), "\n") {
+				if v, ok := strings.CutPrefix(line, "DRIVER="); ok {
+					g.Name += " (" + v + ")"
+				}
+			}
+		}
+		if g.UtilPct > 0 || g.TempC > 0 {
+			out = append(out, g)
+		}
+	}
+	return out
+}

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

@@ -9,13 +9,11 @@ package main
 
 import (
 	"bytes"
-	"context"
 	"encoding/json"
 	"flag"
 	"fmt"
 	"io"
 	"log"
-	"net"
 	"net/http"
 	"os"
 	"runtime"
@@ -96,11 +94,40 @@ type sample struct {
 	Load15     float64            `json:"load15"`
 	Temps      map[string]float64 `json:"temps,omitempty"`
 	Containers []containerStat    `json:"containers,omitempty"`
+	Smart      []smartDisk        `json:"smart,omitempty"`
+	ZFS        []zfsPool          `json:"zfs,omitempty"`
+	GPU        []gpuStat          `json:"gpu,omitempty"`
 }
 
 type containerStat struct {
-	Name  string `json:"name"`
-	State string `json:"state"`
+	Name     string  `json:"name"`
+	State    string  `json:"state"`
+	CPU      float64 `json:"cpu,omitempty"`
+	MemUsed  float64 `json:"memUsed,omitempty"`
+	MemLimit float64 `json:"memLimit,omitempty"`
+}
+
+// Optional-collector shapes — mirror api.SmartDisk/ZFSPool/GPUStat.
+type smartDisk struct {
+	Device string  `json:"device"`
+	Model  string  `json:"model"`
+	Passed *bool   `json:"passed,omitempty"`
+	TempC  float64 `json:"tempC,omitempty"`
+}
+
+type zfsPool struct {
+	Name   string  `json:"name"`
+	Health string  `json:"health"`
+	Size   float64 `json:"size"`
+	Free   float64 `json:"free"`
+}
+
+type gpuStat struct {
+	Name     string  `json:"name"`
+	TempC    float64 `json:"tempC,omitempty"`
+	UtilPct  float64 `json:"utilPct,omitempty"`
+	MemUsed  float64 `json:"memUsed,omitempty"`
+	MemTotal float64 `json:"memTotal,omitempty"`
 }
 
 type collector struct {
@@ -141,6 +168,9 @@ func (c *collector) sample(interval int) sample {
 	s.UptimeS = readUptime()
 	s.Temps = readTemps()
 	s.Containers = readContainers()
+	s.Smart = readSMART()
+	s.ZFS = readZFS()
+	s.GPU = readGPU()
 	return s
 }
 
@@ -325,38 +355,4 @@ func readTemps() map[string]float64 {
 	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-agent/main_test.go

@@ -0,0 +1,48 @@
+package main
+
+import "testing"
+
+func TestContainerCPUPct(t *testing.T) {
+	var s dockerStatsJSON
+	s.CPUStats.CPUUsage.TotalUsage = 300
+	s.PreCPUStats.CPUUsage.TotalUsage = 100
+	s.CPUStats.SystemCPUUsage = 1000
+	s.PreCPUStats.SystemCPUUsage = 500
+	s.CPUStats.OnlineCPUs = 4
+	if got := containerCPUPct(&s); got != 160 {
+		t.Fatalf("expected 160%%, got %v", got)
+	}
+	// No deltas -> 0, no div-by-zero.
+	s.PreCPUStats.CPUUsage.TotalUsage = s.CPUStats.CPUUsage.TotalUsage
+	s.PreCPUStats.SystemCPUUsage = s.CPUStats.SystemCPUUsage
+	if got := containerCPUPct(&s); got != 0 {
+		t.Fatalf("expected 0, got %v", got)
+	}
+}
+
+func TestParseZpoolText(t *testing.T) {
+	out := parseZpoolText([]byte("tank\tONLINE\t1000000000\t400000000\nfast\tDEGRADED\t500\t100\n"))
+	if len(out) != 2 || out[0].Name != "tank" || out[0].Size != 1e9 || out[1].Health != "DEGRADED" {
+		t.Fatalf("bad parse: %+v", out)
+	}
+	if parseZpoolText(nil) != nil {
+		t.Fatal("nil input should yield nil")
+	}
+}
+
+func TestParseZpoolJSON(t *testing.T) {
+	b := []byte(`{"output_version":{"major":0},"pools":{"tank":{"name":"tank","properties":{
+		"health":{"value":"ONLINE"},"size":{"value":1000000000},"free":{"value":250000000}}}}}`)
+	out := parseZpoolJSON(b)
+	if len(out) != 1 || out[0].Health != "ONLINE" || out[0].Free != 250000000 {
+		t.Fatalf("bad parse: %+v", out)
+	}
+}
+
+func TestParseNvidiaCSV(t *testing.T) {
+	out := parseNvidiaCSV([]byte("RTX 3080, 62, 14, 2048, 10240\n"))
+	if len(out) != 1 || out[0].Name != "RTX 3080" || out[0].TempC != 62 ||
+		out[0].MemUsed != 2048*1<<20 || out[0].MemTotal != 10240*1<<20 {
+		t.Fatalf("bad parse: %+v", out)
+	}
+}

apps/backend/go.mod

@@ -42,10 +42,10 @@ require (
 	go.mongodb.org/mongo-driver/v2 v2.5.0 // indirect
 	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/sync v0.22.0 // indirect
-	golang.org/x/sys v0.47.0 // indirect
-	golang.org/x/text v0.41.0 // indirect
+	golang.org/x/crypto v0.57.0 // indirect
+	golang.org/x/sync v0.23.0 // indirect
+	golang.org/x/sys v0.48.0 // indirect
+	golang.org/x/text v0.42.0 // indirect
 	google.golang.org/protobuf v1.36.12 // indirect
 	modernc.org/libc v1.75.7 // indirect
 	modernc.org/mathutil v1.7.1 // indirect

apps/backend/go.sum

@@ -99,18 +99,28 @@ golang.org/x/arch v0.22.0 h1:c/Zle32i5ttqRXjdLyyHZESLD/bB90DCU1g9l/0YBDI=
 golang.org/x/arch v0.22.0/go.mod h1:dNHoOeKiyja7GTvF9NJS1l3Z2yntpQNzgrjh1cU103A=
 golang.org/x/crypto v0.55.0 h1:+KWHjbgOaAQ66dh/YlkZKHlz9ZUlq61AFirAR9ntP8M=
 golang.org/x/crypto v0.55.0/go.mod h1:uq0V9dE/fzQuJtbnL+2EhWOE63vo164FY8xqEnV9xis=
+golang.org/x/crypto v0.57.0 h1:3ZVCjf8Ggz7zneR/EHRVx68Ctf+2pmIMP2UFhh9cC6M=
+golang.org/x/crypto v0.57.0/go.mod h1:Fdz0i5U6CoizGwLda9DttjSk6qlZo25zYNtR+ycvuZA=
 golang.org/x/mod v0.38.0 h1:MECBjubtXD7yj4HrhIUcywNaGeNVUdfVnxmPajOk4yk=
 golang.org/x/mod v0.38.0/go.mod h1:V6Xz0pq8TQ3dGqVQ1FVHuelZpAL0uNhSkk9ogYP3c40=
+golang.org/x/mod v0.41.0 h1:qJmnOUb4YB+FsEuM3HcWucdZASCPGhsX6uljO6pog0c=
 golang.org/x/net v0.58.0 h1:ynWG7rqYi4ccpTEuPZ2QGWHktVEM9DMCj9yzDE0Q7To=
 golang.org/x/net v0.58.0/go.mod h1:YwCddHnFlT7eLQqVprV19OnhLGtc5xOKgE0RyqgfWAU=
 golang.org/x/sync v0.22.0 h1:SZjpbeLmrCk4xhRSZFNZW5gFUeCeFgjekvI/+gfScek=
 golang.org/x/sync v0.22.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
+golang.org/x/sync v0.23.0 h1:KameEIfc1IkluZyXWLn39Wd4tURc6GbCiISGiZm2bQk=
+golang.org/x/sync v0.23.0/go.mod h1:sUUOizhqBxiL6pEWpqNLUiaJn1ShEbZ6BBqskPbjZm0=
 golang.org/x/sys v0.47.0 h1:o7XGOvZQCADBQQ4Y7VNq2dRWQR7JmOUW8Kxx4ZsNgWs=
 golang.org/x/sys v0.47.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
+golang.org/x/sys v0.48.0 h1:bbX/i/6MgT9BVLM9RT1thmxL04yeTAhbEz4SyadbXoo=
+golang.org/x/sys v0.48.0/go.mod h1:hNLxWAXmnKAxqDtdwIYC4bM9oQPEecfsnNMuSxOs3og=
 golang.org/x/text v0.41.0 h1:vz/seA0lnX87Othu2f/0L24RcgrXD9/YFTSuGjj3rH8=
 golang.org/x/text v0.41.0/go.mod h1:jvf1O8ajNzZqhSrQBPbutR/EB83Cc0CFrezNQIwbb5M=
+golang.org/x/text v0.42.0 h1:JbOZXgfeCPU9gacVtYliJqOhD+zhrEqK4LfdpmlUZqI=
+golang.org/x/text v0.42.0/go.mod h1:ojzP1Z+2QtioaF8DTtO8K5q7JWVVYwZKenzujK0Zd0E=
 golang.org/x/tools v0.48.0 h1:3+hClM1aLL5mjMKm5ovokw9epgRXPuu2tILgismM6RE=
 golang.org/x/tools v0.48.0/go.mod h1:08xX0orndb/F7jJxGDicx061tyd5pcMto75YMAXr6lk=
+golang.org/x/tools v0.49.0 h1:3NI7VXzL9+1WZD52Dx2ttoPwD5DWrFGpl9mFZDlmisI=
 google.golang.org/protobuf v1.36.12 h1:pJOKDDOyeXErUroCihFAd5LQuwXBSpVnKGrj5o/fwxc=
 google.golang.org/protobuf v1.36.12/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

apps/backend/internal/api/alerts.go

@@ -0,0 +1,46 @@
+package api
+
+import "encoding/json"
+
+// alertRules is the per-target rules blob stored in monitors.alerts /
+// domains.alerts. Zero values keep pre-rules behavior: first failure alerts,
+// no latency rule, cert threshold = alertDaysBefore, unmuted.
+//
+//	consecutiveFailures — monitor must fail N checks in a row before it flips down
+//	latencyWarnMs       — notify once when an up check's ping crosses above this
+//	certDays            — domain TLS-expiry threshold (overrides alertDaysBefore)
+//	mute                — suppress notifications; incidents/status still record
+type alertRules struct {
+	ConsecutiveFailures int  `json:"consecutiveFailures"`
+	LatencyWarnMs       int  `json:"latencyWarnMs"`
+	CertDays            int  `json:"certDays"`
+	Mute                bool `json:"mute"`
+}
+
+func parseAlertRules(raw json.RawMessage) alertRules {
+	var r alertRules
+	_ = json.Unmarshal(raw, &r)
+	return r
+}
+
+// consecutiveDowns counts failed heartbeats, newest-first, stopping at the
+// first up. The just-written heartbeat is included.
+func (s *Server) consecutiveDowns(monitorID string, limit int) int {
+	var n int
+	_ = s.db.QueryRow(`SELECT COUNT(*) FROM (
+		SELECT status FROM heartbeats WHERE monitor_id = ?
+		ORDER BY checked_at DESC, rowid DESC LIMIT ?)
+		WHERE status = 'down'`, monitorID, limit).Scan(&n)
+	return n
+}
+
+// prevPing returns the ping of the heartbeat before the latest, or -1.
+func (s *Server) prevPing(monitorID string) int {
+	var p int
+	if err := s.db.QueryRow(`SELECT ping_ms FROM heartbeats
+		WHERE monitor_id = ? ORDER BY checked_at DESC, rowid DESC
+		LIMIT 1 OFFSET 1`, monitorID).Scan(&p); err != nil {
+		return -1
+	}
+	return p
+}

apps/backend/internal/api/alerts_test.go

@@ -0,0 +1,324 @@
+package api
+
+import (
+	"bufio"
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/tdvorak/dash/internal/domain"
+)
+
+// ---------- transports ----------
+
+func TestNotifyTransports(t *testing.T) {
+	srv := testServer(t)
+	defer srv.Close()
+
+	// One receiver records body + headers + query per request.
+	type hit struct {
+		body   map[string]any
+		raw    string
+		title  string
+		path   string
+	}
+	got := make(chan hit, 8)
+	hook := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		var m map[string]any
+		buf, _ := io.ReadAll(r.Body)
+		_ = json.Unmarshal(buf, &m)
+		got <- hit{body: m, raw: string(buf), title: r.Header.Get("Title"), path: r.URL.RequestURI()}
+		w.WriteHeader(http.StatusOK)
+	}))
+	defer hook.Close()
+
+	put := func(kv string) {
+		if res, _ := do(t, "PUT", srv.URL+"/api/settings", kv); res.StatusCode != http.StatusOK {
+			t.Fatalf("put %s: %d", kv, res.StatusCode)
+		}
+	}
+
+	// slack + discord + gotify + ntfy all configured; test fires each.
+	put(`{"notify_slack":{"url":"` + hook.URL + `/slack"}}`)
+	put(`{"notify_discord":{"url":"` + hook.URL + `/discord"}}`)
+	put(`{"notify_gotify":{"server":"` + hook.URL + `","token":"gtok"}}`)
+	put(`{"notify_ntfy":{"server":"` + hook.URL + `","topic":"alerts"}}`)
+
+	res, out := do(t, "POST", srv.URL+"/api/notify/test", "")
+	if res.StatusCode != http.StatusOK {
+		t.Fatalf("notify test: %d", res.StatusCode)
+	}
+	results := out["results"].(map[string]any)
+	for _, name := range []string{"slack", "discord", "gotify", "ntfy"} {
+		if results[name] != "ok" {
+			t.Fatalf("%s: %v", name, results[name])
+		}
+	}
+
+	seen := map[string]hit{}
+	for i := 0; i < 4; i++ {
+		select {
+		case h := <-got:
+			seen[h.path] = h
+		case <-time.After(3 * time.Second):
+			t.Fatal("timed out waiting for transports")
+		}
+	}
+	if seen["/slack"].body["text"] == "" {
+		t.Fatalf("slack payload missing text: %v", seen["/slack"].body)
+	}
+	if seen["/discord"].body["content"] == "" {
+		t.Fatalf("discord payload missing content: %v", seen["/discord"].body)
+	}
+	if !strings.HasPrefix(seen["/message?token=gtok"].path, "/message?token=") {
+		t.Fatalf("gotify hit missing: %v", seen)
+	}
+	if h := seen["/alerts"]; h.raw != "Dash test notification" || h.title != "dash" {
+		t.Fatalf("ntfy payload wrong: %q title=%q", h.raw, h.title)
+	}
+
+	// Legacy string webhook still works alongside presets.
+	put(`{"notify_webhook":"` + hook.URL + `/legacy"}`)
+	res, _ = do(t, "POST", srv.URL+"/api/notify/test", `{"transport":"webhook"}`)
+	if res.StatusCode != http.StatusOK {
+		t.Fatalf("webhook test: %d", res.StatusCode)
+	}
+	select {
+	case h := <-got:
+		if h.path != "/legacy" || h.body["event"] != "test" {
+			t.Fatalf("legacy webhook payload: %v", h.body)
+		}
+	case <-time.After(3 * time.Second):
+		t.Fatal("legacy webhook never fired")
+	}
+
+	// Named unconfigured transport -> 400.
+	res, _ = do(t, "POST", srv.URL+"/api/notify/test", `{"transport":"smtp"}`)
+	if res.StatusCode != http.StatusBadRequest {
+		t.Fatalf("expected 400 for unconfigured smtp, got %d", res.StatusCode)
+	}
+}
+
+// fakeSMTP is the smallest lawful SMTP server: EHLO/MAIL/RCPT/DATA/QUIT.
+func fakeSMTP(t *testing.T) (addr string, gotMsg <-chan string) {
+	t.Helper()
+	ln, err := net.Listen("tcp", "127.0.0.1:0")
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { ln.Close() })
+	msgs := make(chan string, 1)
+	go func() {
+		conn, err := ln.Accept()
+		if err != nil {
+			return
+		}
+		defer conn.Close()
+		r := bufio.NewReader(conn)
+		fmt.Fprint(conn, "220 fake\r\n")
+		var data strings.Builder
+		inData := false
+		for {
+			line, err := r.ReadString('\n')
+			if err != nil {
+				return
+			}
+			line = strings.TrimRight(line, "\r\n")
+			if inData {
+				if line == "." {
+					inData = false
+					fmt.Fprint(conn, "250 queued\r\n")
+					continue
+				}
+				data.WriteString(line + "\n")
+				continue
+			}
+			switch {
+			case strings.HasPrefix(line, "EHLO"):
+				fmt.Fprint(conn, "250-fake\r\n250 OK\r\n")
+			case strings.HasPrefix(line, "MAIL"), strings.HasPrefix(line, "RCPT"):
+				fmt.Fprint(conn, "250 OK\r\n")
+			case strings.HasPrefix(line, "DATA"):
+				fmt.Fprint(conn, "354 go\r\n")
+				inData = true
+			case strings.HasPrefix(line, "QUIT"):
+				fmt.Fprint(conn, "221 bye\r\n")
+				msgs <- data.String()
+				return
+			default:
+				fmt.Fprint(conn, "250 OK\r\n")
+			}
+		}
+	}()
+	return ln.Addr().String(), msgs
+}
+
+func TestNotifySMTP(t *testing.T) {
+	srv := testServer(t)
+	defer srv.Close()
+
+	addr, gotMsg := fakeSMTP(t)
+	host, port, _ := net.SplitHostPort(addr)
+	res, _ := do(t, "PUT", srv.URL+"/api/settings",
+		`{"notify_smtp":{"host":"`+host+`","port":"`+port+`","from":"dash@local","to":"me@local"}}`)
+	if res.StatusCode != http.StatusOK {
+		t.Fatalf("put smtp: %d", res.StatusCode)
+	}
+	res, out := do(t, "POST", srv.URL+"/api/notify/test", `{"transport":"smtp"}`)
+	if res.StatusCode != http.StatusOK || out["results"].(map[string]any)["smtp"] != "ok" {
+		t.Fatalf("smtp test: %d %v", res.StatusCode, out)
+	}
+	select {
+	case msg := <-gotMsg:
+		if !strings.Contains(msg, "Subject: [Dash] Dash test notification") {
+			t.Fatalf("smtp message missing subject: %q", msg)
+		}
+	case <-time.After(3 * time.Second):
+		t.Fatal("smtp server never received the message")
+	}
+}
+
+// ---------- alert rules ----------
+
+func TestAlertRulesConsecutiveAndMute(t *testing.T) {
+	srv := testServer(t)
+	defer srv.Close()
+
+	got := make(chan map[string]any, 8)
+	hook := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		var m map[string]any
+		_ = json.NewDecoder(r.Body).Decode(&m)
+		got <- m
+		w.WriteHeader(http.StatusOK)
+	}))
+	defer hook.Close()
+	do(t, "PUT", srv.URL+"/api/settings", `{"notify_webhook":"`+hook.URL+`"}`)
+
+	up := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { w.WriteHeader(200) }))
+	defer up.Close()
+	down := `{"url":"http://127.0.0.1:1","timeoutS":1}`
+
+	// Monitor requiring 2 consecutive failures before going down.
+	res, m := do(t, "POST", srv.URL+"/api/monitors",
+		`{"name":"Flap","type":"http","url":"`+up.URL+`","timeoutS":1,"alerts":{"consecutiveFailures":2}}`)
+	if res.StatusCode != http.StatusCreated {
+		t.Fatalf("create: %v", m)
+	}
+	id := m["id"].(string)
+	do(t, "POST", srv.URL+"/api/monitors/"+id+"/check", "") // -> up
+
+	do(t, "PATCH", srv.URL+"/api/monitors/"+id, down)
+	do(t, "POST", srv.URL+"/api/monitors/"+id+"/check", "") // 1st failure: hold
+	_, mv := do(t, "GET", srv.URL+"/api/monitors/"+id, "")
+	if mv["status"] != "up" {
+		t.Fatalf("expected held status up after 1 failure, got %v", mv["status"])
+	}
+	do(t, "POST", srv.URL+"/api/monitors/"+id+"/check", "") // 2nd failure: down
+	_, mv = do(t, "GET", srv.URL+"/api/monitors/"+id, "")
+	if mv["status"] != "down" {
+		t.Fatalf("expected down after 2 failures, got %v", mv["status"])
+	}
+	select {
+	case body := <-got:
+		if body["event"] != "monitor.down" {
+			t.Fatalf("expected monitor.down, got %v", body["event"])
+		}
+	case <-time.After(3 * time.Second):
+		t.Fatal("monitor.down never fired after threshold")
+	}
+
+	// Muted monitor: status still flips, no notification.
+	res, m2 := do(t, "POST", srv.URL+"/api/monitors",
+		`{"name":"Quiet","type":"http","url":"`+up.URL+`","timeoutS":1,"alerts":{"mute":true}}`)
+	if res.StatusCode != http.StatusCreated {
+		t.Fatalf("create muted: %v", m2)
+	}
+	id2 := m2["id"].(string)
+	do(t, "POST", srv.URL+"/api/monitors/"+id2+"/check", "")
+	do(t, "PATCH", srv.URL+"/api/monitors/"+id2, down)
+	do(t, "POST", srv.URL+"/api/monitors/"+id2+"/check", "")
+	_, mv = do(t, "GET", srv.URL+"/api/monitors/"+id2, "")
+	if mv["status"] != "down" {
+		t.Fatalf("muted monitor should still go down, got %v", mv["status"])
+	}
+	select {
+	case body := <-got:
+		if body["name"] == "Quiet" {
+			t.Fatal("muted monitor still notified")
+		}
+	case <-time.After(1500 * time.Millisecond):
+	}
+}
+
+func TestAlertRulesBadJSON(t *testing.T) {
+	srv := testServer(t)
+	defer srv.Close()
+	res, _ := do(t, "POST", srv.URL+"/api/monitors",
+		`{"name":"X","type":"http","url":"http://127.0.0.1:1","alerts":"nope"}`)
+	if res.StatusCode != http.StatusBadRequest {
+		t.Fatalf("expected 400 for invalid alerts, got %d", res.StatusCode)
+	}
+}
+
+// ---------- subdomains ----------
+
+func TestSubdomainDiscovery(t *testing.T) {
+	srv := testServer(t)
+	defer srv.Close()
+
+	// Stub the network seams: CT returns candidates, resolver answers a few.
+	oldCT, oldRes := domain.CTNames, domain.ResolveIPs
+	domain.CTNames = func(_ context.Context, d string) ([]string, error) {
+		return []string{"api." + d + "\nwww." + d, "*." + d, "other.com"}, nil
+	}
+	domain.ResolveIPs = func(_ context.Context, name string) ([]string, error) {
+		if strings.HasPrefix(name, "api.") {
+			return []string{"10.0.0.1"}, nil
+		}
+		return []string{"93.184.216.34"}, nil
+	}
+	t.Cleanup(func() { domain.CTNames, domain.ResolveIPs = oldCT, oldRes })
+
+	res, d := do(t, "POST", srv.URL+"/api/domains", `{"name":"example.com"}`)
+	if res.StatusCode != http.StatusCreated {
+		t.Fatalf("create domain: %v", d)
+	}
+	id := d["id"].(string)
+
+	// First refresh ran discovery inline (sub_checked_at was NULL).
+	res, subs := do(t, "GET", srv.URL+"/api/domains/"+id+"/subdomains", "")
+	if res.StatusCode != http.StatusOK {
+		t.Fatalf("list subdomains: %d", res.StatusCode)
+	}
+	list, _ := subs["subdomains"].([]any) // response is a bare array — check below
+	_ = list
+	// do() decodes objects only; re-fetch raw for the array.
+	raw, err := http.Get(srv.URL + "/api/domains/" + id + "/subdomains")
+	if err != nil {
+		t.Fatal(err)
+	}
+	var arr []map[string]any
+	_ = json.NewDecoder(raw.Body).Decode(&arr)
+	raw.Body.Close()
+	names := map[string][]string{}
+	for _, s := range arr {
+		ips := []string{}
+		for _, ip := range s["ips"].([]any) {
+			ips = append(ips, ip.(string))
+		}
+		names[s["name"].(string)] = ips
+	}
+	if len(names) != 3 || len(names["api.example.com"]) != 1 || names["api.example.com"][0] != "10.0.0.1" {
+		t.Fatalf("unexpected subdomains: %v", names)
+	}
+	if _, bad := names["other.com"]; bad {
+		t.Fatal("foreign name leaked into subdomains")
+	}
+}

apps/backend/internal/api/api.go

@@ -60,8 +60,20 @@ func (s *Server) routes() *gin.Engine {
 	r.Use(accessLog(s.log), gin.Recovery())
 
 	v1 := r.Group("/api")
+	v1.Use(s.requireAuth())
 	v1.GET("/healthz", s.healthz)
 
+	v1.GET("/auth/session", s.authSession)
+	v1.POST("/auth/setup", s.authSetup)
+	v1.POST("/auth/login", s.authLogin)
+	v1.POST("/auth/logout", s.authLogout)
+	v1.POST("/auth/disable", s.authDisable)
+
+	v1.GET("/boards", s.listBoards)
+	v1.POST("/boards", s.createBoard)
+	v1.PATCH("/boards/:id", s.updateBoard)
+	v1.DELETE("/boards/:id", s.deleteBoard)
+
 	v1.GET("/sections", s.listSections)
 	v1.POST("/sections", s.createSection)
 	v1.PATCH("/sections/:id", s.updateSection)
@@ -91,6 +103,8 @@ func (s *Server) routes() *gin.Engine {
 	v1.DELETE("/domains/:id", s.deleteDomain)
 	v1.POST("/domains/:id/refresh", s.refreshDomainH)
 	v1.GET("/domains/:id/checks", s.domainChecks)
+	v1.GET("/domains/:id/subdomains", s.listSubdomains)
+	v1.POST("/domains/:id/subdomains/refresh", s.refreshSubdomains)
 	v1.POST("/notify/test", s.notifyTest)
 
 	v1.GET("/systems", s.listSystemsH)
@@ -167,6 +181,7 @@ type Section struct {
 	Name      string  `json:"name"`
 	Position  float64 `json:"position"`
 	Collapsed bool    `json:"collapsed"`
+	BoardID   string  `json:"boardId"`
 	Items     []Item  `json:"items"`
 }
 

apps/backend/internal/api/api_test.go

@@ -786,3 +786,73 @@ func TestValidURL(t *testing.T) {
 		}
 	}
 }
+
+func TestBoards(t *testing.T) {
+	srv := testServer(t)
+	defer srv.Close()
+
+	// Default board exists and owns new sections.
+	var boards []Board
+	resp, err := http.Get(srv.URL + "/api/boards")
+	if err != nil || json.NewDecoder(resp.Body).Decode(&boards) != nil {
+		t.Fatalf("list boards: %v", err)
+	}
+	resp.Body.Close()
+	if len(boards) != 1 || boards[0].ID != "b_home" {
+		t.Fatalf("expected seeded home board, got %+v", boards)
+	}
+	_, sec := do(t, "POST", srv.URL+"/api/sections", `{"name":"A"}`)
+	if sec["boardId"] != "b_home" {
+		t.Fatalf("section should default to home board: %v", sec["boardId"])
+	}
+
+	// Create a second board; slug is derived and unique.
+	_, b2 := do(t, "POST", srv.URL+"/api/boards", `{"name":"Lab Net"}`)
+	if b2["slug"] != "lab-net" {
+		t.Fatalf("bad slug: %v", b2["slug"])
+	}
+	_, b3 := do(t, "POST", srv.URL+"/api/boards", `{"name":"Lab Net"}`)
+	if b3["slug"] == b2["slug"] {
+		t.Fatalf("slug collision: %v", b3["slug"])
+	}
+
+	// Sections scope to their board.
+	_, s2 := do(t, "POST", srv.URL+"/api/sections", `{"name":"B","boardId":"`+b2["id"].(string)+`"}`)
+	if s2["boardId"] != b2["id"] {
+		t.Fatalf("section not scoped to board: %v", s2["boardId"])
+	}
+	var home, lab []Section
+	r1, _ := http.Get(srv.URL + "/api/sections?board=b_home")
+	_ = json.NewDecoder(r1.Body).Decode(&home)
+	r1.Body.Close()
+	r2, _ := http.Get(srv.URL + "/api/sections?board=" + b2["id"].(string))
+	_ = json.NewDecoder(r2.Body).Decode(&lab)
+	r2.Body.Close()
+	if len(home) != 1 || home[0].Name != "A" || len(lab) != 1 || lab[0].Name != "B" {
+		t.Fatalf("board filter broken: home=%v lab=%v", home, lab)
+	}
+
+	// Rename keeps the slug; deleting cascades sections.
+	_, rb := do(t, "PATCH", srv.URL+"/api/boards/"+b3["id"].(string), `{"name":"Renamed"}`)
+	if rb["name"] != "Renamed" || rb["slug"] == "renamed" {
+		t.Fatalf("rename should not change slug: %+v", rb)
+	}
+	res, _ := do(t, "DELETE", srv.URL+"/api/boards/"+b2["id"].(string), "")
+	if res.StatusCode != http.StatusNoContent {
+		t.Fatalf("delete board: %d", res.StatusCode)
+	}
+	var labAfter []Section
+	r3, _ := http.Get(srv.URL + "/api/sections?board=" + b2["id"].(string))
+	_ = json.NewDecoder(r3.Body).Decode(&labAfter)
+	r3.Body.Close()
+	if len(labAfter) != 0 {
+		t.Fatalf("sections should cascade with board: %v", labAfter)
+	}
+
+	// Down to two boards — delete both and the last delete must refuse.
+	do(t, "DELETE", srv.URL+"/api/boards/"+b3["id"].(string), "")
+	res, _ = do(t, "DELETE", srv.URL+"/api/boards/b_home", "")
+	if res.StatusCode != http.StatusBadRequest {
+		t.Fatalf("deleting last board should 400, got %d", res.StatusCode)
+	}
+}

apps/backend/internal/api/auth.go

@@ -0,0 +1,261 @@
+package api
+
+// Opt-in local auth — disabled by default; enabling creates the first admin.
+// Local username + bcrypt password only (no OIDC/SSO — deliberate non-goal).
+// Sessions are random tokens in SQLite behind an httpOnly SameSite=Lax cookie;
+// login is rate-limited per IP. Public endpoints (status pages, badges, push,
+// agent ingest, metrics) bypass the middleware.
+
+import (
+	"crypto/rand"
+	"encoding/hex"
+	"encoding/json"
+	"net/http"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"go.uber.org/zap"
+	"golang.org/x/crypto/bcrypt"
+)
+
+const (
+	sessionCookie = "dash_session"
+	sessionTTL    = 7 * 24 * time.Hour
+	// Rotate when less than half the TTL remains.
+	sessionRotate = sessionTTL / 2
+)
+
+func (s *Server) authEnabled() bool {
+	var raw string
+	if err := s.db.QueryRow(`SELECT value FROM settings WHERE key = 'auth_enabled'`).Scan(&raw); err != nil {
+		return false
+	}
+	var on bool
+	_ = json.Unmarshal([]byte(raw), &on)
+	return on
+}
+
+func (s *Server) userCount() int {
+	var n int
+	_ = s.db.QueryRow(`SELECT COUNT(*) FROM users`).Scan(&n)
+	return n
+}
+
+// ---------- sessions ----------
+
+func (s *Server) createSession(c *gin.Context, userID string) {
+	var tok [32]byte
+	_, _ = rand.Read(tok[:])
+	token := hex.EncodeToString(tok[:])
+	exp := time.Now().Add(sessionTTL)
+	_, _ = s.db.Exec(`INSERT INTO sessions (token, user_id, expires_at) VALUES (?,?,?)`,
+		token, userID, exp.UTC().Format("2006-01-02T15:04:05.000Z"))
+	http.SetCookie(c.Writer, &http.Cookie{
+		Name:     sessionCookie,
+		Value:    token,
+		Path:     "/",
+		Expires:  exp,
+		HttpOnly: true,
+		Secure:   c.Request.TLS != nil,
+		SameSite: http.SameSiteLaxMode,
+	})
+}
+
+// sessionUser resolves the cookie to a user, sliding-rotating near expiry.
+// Returns "" when absent/expired.
+func (s *Server) sessionUser(c *gin.Context) string {
+	ck, err := c.Cookie(sessionCookie)
+	if err != nil || ck == "" {
+		return ""
+	}
+	var userID, expires string
+	err = s.db.QueryRow(`SELECT user_id, expires_at FROM sessions WHERE token = ?`, ck).Scan(&userID, &expires)
+	if err != nil {
+		return ""
+	}
+	exp, err := time.Parse("2006-01-02T15:04:05.000Z", expires)
+	if err != nil || time.Now().After(exp) {
+		_, _ = s.db.Exec(`DELETE FROM sessions WHERE token = ?`, ck)
+		return ""
+	}
+	if time.Until(exp) < sessionRotate {
+		// Rotate: drop the old token, issue a fresh one.
+		_, _ = s.db.Exec(`DELETE FROM sessions WHERE token = ?`, ck)
+		s.createSession(c, userID)
+	}
+	return userID
+}
+
+// ---------- rate limiting (login only, in-memory per-IP) ----------
+
+var loginMu sync.Mutex
+var loginHits = map[string][]time.Time{}
+
+func loginAllowed(ip string) bool {
+	loginMu.Lock()
+	defer loginMu.Unlock()
+	cut := time.Now().Add(-time.Minute)
+	kept := loginHits[ip][:0]
+	for _, t := range loginHits[ip] {
+		if t.After(cut) {
+			kept = append(kept, t)
+		}
+	}
+	if len(kept) >= 5 {
+		loginHits[ip] = kept
+		return false
+	}
+	loginHits[ip] = append(kept, time.Now())
+	return true
+}
+
+// ---------- middleware ----------
+
+// publicAPI lists /api paths reachable without a session. Auth endpoints must
+// stay open (login itself); push/ingest/badge/metrics/public status carry
+// their own tokens or are intentionally public.
+func publicAPI(path string) bool {
+	switch {
+	case strings.HasPrefix(path, "/api/auth/"),
+		strings.HasPrefix(path, "/api/push/"),
+		path == "/api/systems/ingest",
+		strings.HasPrefix(path, "/api/badge/"),
+		path == "/api/metrics",
+		strings.HasPrefix(path, "/api/healthz"),
+		strings.HasSuffix(path, "/public"):
+		return true
+	}
+	return false
+}
+
+// requireAuth gates every /api route when the auth_enabled setting is on.
+func (s *Server) requireAuth() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		if !s.authEnabled() || publicAPI(c.Request.URL.Path) {
+			c.Next()
+			return
+		}
+		if s.sessionUser(c) == "" {
+			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "authentication required"})
+			return
+		}
+		c.Next()
+	}
+}
+
+// ---------- handlers ----------
+
+type credentials struct {
+	Username string `json:"username"`
+	Password string `json:"password"`
+}
+
+// sessionInfo reports auth state for the frontend shell — always public so
+// the UI can decide between the board and the login screen.
+func (s *Server) authSession(c *gin.Context) {
+	on := s.authEnabled()
+	out := gin.H{"enabled": on, "authed": false, "setup": false}
+	if !on {
+		c.JSON(http.StatusOK, out)
+		return
+	}
+	out["setup"] = s.userCount() == 0
+	if uid := s.sessionUser(c); uid != "" {
+		var name string
+		_ = s.db.QueryRow(`SELECT username FROM users WHERE id = ?`, uid).Scan(&name)
+		out["authed"] = true
+		out["username"] = name
+	}
+	c.JSON(http.StatusOK, out)
+}
+
+// setup creates the first user — only while auth is on and no users exist.
+func (s *Server) authSetup(c *gin.Context) {
+	if !s.authEnabled() {
+		fail(c, http.StatusBadRequest, "auth is not enabled")
+		return
+	}
+	if s.userCount() > 0 {
+		fail(c, http.StatusConflict, "admin user already exists")
+		return
+	}
+	var in credentials
+	if err := c.ShouldBindJSON(&in); err != nil ||
+		len(strings.TrimSpace(in.Username)) < 2 || len(in.Password) < 8 {
+		fail(c, http.StatusBadRequest, "username (2+) and password (8+) required")
+		return
+	}
+	hash, err := bcrypt.GenerateFromPassword([]byte(in.Password), bcrypt.DefaultCost)
+	if err != nil {
+		fail(c, http.StatusInternalServerError, "hash failed")
+		return
+	}
+	uid := newID("u")
+	if _, err := s.db.Exec(`INSERT INTO users (id, username, pass_hash) VALUES (?,?,?)`,
+		uid, strings.TrimSpace(in.Username), string(hash)); err != nil {
+		fail(c, http.StatusConflict, "username taken")
+		return
+	}
+	s.createSession(c, uid)
+	c.JSON(http.StatusCreated, gin.H{"username": in.Username})
+}
+
+func (s *Server) authLogin(c *gin.Context) {
+	if !s.authEnabled() {
+		fail(c, http.StatusBadRequest, "auth is not enabled")
+		return
+	}
+	ip := c.ClientIP()
+	if !loginAllowed(ip) {
+		fail(c, http.StatusTooManyRequests, "too many attempts — wait a minute")
+		return
+	}
+	var in credentials
+	if err := c.ShouldBindJSON(&in); err != nil {
+		fail(c, http.StatusBadRequest, "invalid body")
+		return
+	}
+	var uid, hash string
+	err := s.db.QueryRow(`SELECT id, pass_hash FROM users WHERE username = ?`,
+		strings.TrimSpace(in.Username)).Scan(&uid, &hash)
+	if err != nil {
+		// Unknown user — run bcrypt anyway so timing doesn't leak existence.
+		hash = "$2a$10$7EqJtq98hPqEX7fNZaFWoOhi5sA5t6p7K0dGm7ZC4yQ0yCk0cFk0K"
+	}
+	// CompareHashAndPassword is constant-time; err != nil covers both
+	// unknown user (dummy hash above) and wrong password.
+	if err != nil || bcrypt.CompareHashAndPassword([]byte(hash), []byte(in.Password)) != nil {
+		fail(c, http.StatusUnauthorized, "invalid credentials")
+		return
+	}
+	s.createSession(c, uid)
+	c.JSON(http.StatusOK, gin.H{"username": in.Username})
+}
+
+func (s *Server) authLogout(c *gin.Context) {
+	if ck, err := c.Cookie(sessionCookie); err == nil {
+		_, _ = s.db.Exec(`DELETE FROM sessions WHERE token = ?`, ck)
+	}
+	http.SetCookie(c.Writer, &http.Cookie{
+		Name: sessionCookie, Value: "", Path: "/", MaxAge: -1, HttpOnly: true,
+	})
+	c.Status(http.StatusNoContent)
+}
+
+// authDisable turns auth off and wipes users+sessions. Requires a session —
+// you can't switch the lock off from outside.
+func (s *Server) authDisable(c *gin.Context) {
+	if s.sessionUser(c) == "" {
+		fail(c, http.StatusUnauthorized, "authentication required")
+		return
+	}
+	_, _ = s.db.Exec(`DELETE FROM sessions`)
+	_, _ = s.db.Exec(`DELETE FROM users`)
+	if _, err := s.db.Exec(`INSERT INTO settings (key, value) VALUES ('auth_enabled','false')
+		ON CONFLICT(key) DO UPDATE SET value = excluded.value`); err != nil {
+		s.log.Error("auth disable", zap.Error(err))
+	}
+	c.Status(http.StatusNoContent)
+}

apps/backend/internal/api/auth_test.go

@@ -0,0 +1,196 @@
+package api
+
+import (
+	"encoding/json"
+	"net/http/httptest"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/tdvorak/dash/internal/db"
+	"go.uber.org/zap"
+)
+
+// authServer returns the bare server (no httptest) so tests can plant
+// sessions and inspect cookies directly.
+func authServer(t *testing.T) *Server {
+	t.Helper()
+	d, err := db.Open(filepath.Join(t.TempDir(), "dash.db"))
+	if err != nil {
+		t.Fatalf("open db: %v", err)
+	}
+	t.Cleanup(func() { d.Close() })
+	gin.SetMode(gin.TestMode)
+	// Login rate limits are keyed by IP in a package-global map — reset so
+	// tests don't count each other's attempts.
+	loginMu.Lock()
+	loginHits = map[string][]time.Time{}
+	loginMu.Unlock()
+	return newServer(zap.NewNop(), d, t.TempDir())
+}
+
+func req(t *testing.T, s *Server, method, path, body, cookie string) *httptest.ResponseRecorder {
+	t.Helper()
+	w := httptest.NewRecorder()
+	r := httptest.NewRequest(method, path, strings.NewReader(body))
+	r.Header.Set("Content-Type", "application/json")
+	if cookie != "" {
+		r.Header.Set("Cookie", sessionCookie+"="+cookie)
+	}
+	s.routes().ServeHTTP(w, r)
+	return w
+}
+
+func sessionCookieOf(w *httptest.ResponseRecorder) string {
+	for _, c := range w.Result().Cookies() {
+		if c.Name == sessionCookie {
+			return c.Value
+		}
+	}
+	return ""
+}
+
+func enableAuth(t *testing.T, s *Server) {
+	t.Helper()
+	if w := req(t, s, "PUT", "/api/settings", `{"auth_enabled":true}`, ""); w.Code != 200 {
+		t.Fatalf("enable auth: %d", w.Code)
+	}
+}
+
+func TestAuthDisabledByDefault(t *testing.T) {
+	s := authServer(t)
+	if w := req(t, s, "GET", "/api/sections", "", ""); w.Code != 200 {
+		t.Fatalf("sections open when auth off: %d", w.Code)
+	}
+	var out map[string]any
+	w := req(t, s, "GET", "/api/auth/session", "", "")
+	_ = json.NewDecoder(w.Body).Decode(&out)
+	if out["enabled"] != false {
+		t.Fatalf("auth should report disabled: %v", out)
+	}
+}
+
+func TestAuthLifecycle(t *testing.T) {
+	s := authServer(t)
+	enableAuth(t, s)
+
+	// Everything gates now.
+	if w := req(t, s, "GET", "/api/sections", "", ""); w.Code != 401 {
+		t.Fatalf("expected 401, got %d", w.Code)
+	}
+	// Session endpoint stays public and reports setup mode.
+	var sess map[string]any
+	w := req(t, s, "GET", "/api/auth/session", "", "")
+	_ = json.NewDecoder(w.Body).Decode(&sess)
+	if sess["enabled"] != true || sess["setup"] != true || sess["authed"] != false {
+		t.Fatalf("bad session payload: %v", sess)
+	}
+	// Public surfaces stay open even gated.
+	for _, p := range []string{"/api/healthz", "/api/metrics", "/api/badge/uptime/x.svg"} {
+		if w := req(t, s, "GET", p, "", ""); w.Code == 401 {
+			t.Fatalf("public path %s gated", p)
+		}
+	}
+
+	// Setup creates the first admin and returns a session cookie.
+	w = req(t, s, "POST", "/api/auth/setup", `{"username":"admin","password":"correct-horse"}`, "")
+	if w.Code != 201 {
+		t.Fatalf("setup: %d body=%s", w.Code, w.Body)
+	}
+	cookie := sessionCookieOf(w)
+	if cookie == "" {
+		t.Fatal("setup did not set a session cookie")
+	}
+	// Second setup blocked.
+	if w := req(t, s, "POST", "/api/auth/setup", `{"username":"x","password":"another-pass"}`, ""); w.Code != 409 {
+		t.Fatalf("second setup should 409, got %d", w.Code)
+	}
+
+	// Authed request with the cookie.
+	if w := req(t, s, "GET", "/api/sections", "", cookie); w.Code != 200 {
+		t.Fatalf("authed request: %d", w.Code)
+	}
+
+	// Logout kills the session.
+	req(t, s, "POST", "/api/auth/logout", "", cookie)
+	if w := req(t, s, "GET", "/api/sections", "", cookie); w.Code != 401 {
+		t.Fatalf("expected 401 after logout, got %d", w.Code)
+	}
+
+	// Login wrong password -> 401; right -> 200 + fresh cookie.
+	if w := req(t, s, "POST", "/api/auth/login", `{"username":"admin","password":"wrong-password"}`, ""); w.Code != 401 {
+		t.Fatalf("bad login should 401, got %d", w.Code)
+	}
+	w = req(t, s, "POST", "/api/auth/login", `{"username":"admin","password":"correct-horse"}`, "")
+	if w.Code != 200 {
+		t.Fatalf("login: %d", w.Code)
+	}
+	if sessionCookieOf(w) == "" {
+		t.Fatal("login set no cookie")
+	}
+}
+
+func TestAuthLoginRateLimit(t *testing.T) {
+	s := authServer(t)
+	enableAuth(t, s)
+	req(t, s, "POST", "/api/auth/setup", `{"username":"admin","password":"correct-horse"}`, "")
+	req(t, s, "POST", "/api/auth/logout", "", "")
+	for i := 0; i < 5; i++ {
+		req(t, s, "POST", "/api/auth/login", `{"username":"admin","password":"nope-nope"}`, "")
+	}
+	if w := req(t, s, "POST", "/api/auth/login", `{"username":"admin","password":"correct-horse"}`, ""); w.Code != 429 {
+		t.Fatalf("6th login should be rate-limited, got %d", w.Code)
+	}
+}
+
+func TestAuthSessionExpiryAndRotation(t *testing.T) {
+	s := authServer(t)
+	enableAuth(t, s)
+	w := req(t, s, "POST", "/api/auth/setup", `{"username":"admin","password":"correct-horse"}`, "")
+	cookie := sessionCookieOf(w)
+
+	// Expired session -> 401.
+	_, _ = s.db.Exec(`UPDATE sessions SET expires_at = ? WHERE token = ?`,
+		time.Now().Add(-time.Hour).UTC().Format("2006-01-02T15:04:05.000Z"), cookie)
+	if w := req(t, s, "GET", "/api/sections", "", cookie); w.Code != 401 {
+		t.Fatalf("expired session should 401, got %d", w.Code)
+	}
+
+	// Near-expiry session rotates: response carries a new cookie.
+	fresh := req(t, s, "POST", "/api/auth/login", `{"username":"admin","password":"correct-horse"}`, "")
+	cookie = sessionCookieOf(fresh)
+	_, _ = s.db.Exec(`UPDATE sessions SET expires_at = ? WHERE token = ?`,
+		time.Now().Add(time.Hour).UTC().Format("2006-01-02T15:04:05.000Z"), cookie)
+	w = req(t, s, "GET", "/api/sections", "", cookie)
+	if w.Code != 200 {
+		t.Fatalf("rotating request should pass, got %d", w.Code)
+	}
+	newCookie := sessionCookieOf(w)
+	if newCookie == "" || newCookie == cookie {
+		t.Fatal("expected session rotation to issue a new token")
+	}
+	// Old token is dead.
+	if w := req(t, s, "GET", "/api/sections", "", cookie); w.Code != 401 {
+		t.Fatalf("old token should be invalid after rotation, got %d", w.Code)
+	}
+}
+
+func TestAuthDisable(t *testing.T) {
+	s := authServer(t)
+	enableAuth(t, s)
+	w := req(t, s, "POST", "/api/auth/setup", `{"username":"admin","password":"correct-horse"}`, "")
+	cookie := sessionCookieOf(w)
+
+	// Unauthenticated disable is refused.
+	if w := req(t, s, "POST", "/api/auth/disable", "", ""); w.Code != 401 {
+		t.Fatalf("disable without session should 401, got %d", w.Code)
+	}
+	if w := req(t, s, "POST", "/api/auth/disable", "", cookie); w.Code != 204 {
+		t.Fatalf("disable: %d", w.Code)
+	}
+	if w := req(t, s, "GET", "/api/sections", "", ""); w.Code != 200 {
+		t.Fatalf("sections should reopen after disable, got %d", w.Code)
+	}
+}

apps/backend/internal/api/board.go

@@ -10,8 +10,16 @@ import (
 
 // board loads the full tree: sections ordered, each with items and urls.
 // Three flat queries assembled in memory — the whole board is ~100 rows.
-func (s *Server) board() ([]Section, error) {
-	secRows, err := s.db.Query(`SELECT id, name, position, collapsed FROM sections ORDER BY position`)
+// boardID filters to one board; "" returns every section (export, legacy).
+// COALESCE maps pre-boards rows onto the default 'b_home' board.
+func (s *Server) board(boardID string) ([]Section, error) {
+	q := `SELECT id, name, position, collapsed, COALESCE(board_id,'b_home') FROM sections`
+	var args []any
+	if boardID != "" {
+		q += ` WHERE board_id = ?`
+		args = append(args, boardID)
+	}
+	secRows, err := s.db.Query(q+` ORDER BY position`, args...)
 	if err != nil {
 		return nil, err
 	}
@@ -21,7 +29,7 @@ func (s *Server) board() ([]Section, error) {
 	byID := map[string]*Section{}
 	for secRows.Next() {
 		var sec Section
-		if err := secRows.Scan(&sec.ID, &sec.Name, &sec.Position, &sec.Collapsed); err != nil {
+		if err := secRows.Scan(&sec.ID, &sec.Name, &sec.Position, &sec.Collapsed, &sec.BoardID); err != nil {
 			return nil, err
 		}
 		sec.Items = []Item{}
@@ -89,7 +97,7 @@ func (s *Server) board() ([]Section, error) {
 }
 
 func (s *Server) listSections(c *gin.Context) {
-	sections, err := s.board()
+	sections, err := s.board(c.Query("board"))
 	if err != nil {
 		fail(c, http.StatusInternalServerError, err.Error())
 		return
@@ -99,19 +107,27 @@ func (s *Server) listSections(c *gin.Context) {
 
 func (s *Server) createSection(c *gin.Context) {
 	var in struct {
-		Name string `json:"name"`
+		Name    string `json:"name"`
+		BoardID string `json:"boardId"`
 	}
 	if err := c.ShouldBindJSON(&in); err != nil || in.Name == "" {
 		fail(c, http.StatusBadRequest, "name required")
 		return
 	}
+	boardID := in.BoardID
+	if boardID == "" {
+		boardID = "b_home"
+	}
 	var maxPos sql.NullFloat64
-	if err := s.db.QueryRow(`SELECT MAX(position) FROM sections`).Scan(&maxPos); err != nil {
+	if err := s.db.QueryRow(`SELECT MAX(position) FROM sections WHERE board_id = ?`, boardID).Scan(&maxPos); err != nil {
 		fail(c, http.StatusInternalServerError, err.Error())
 		return
 	}
-	sec := Section{ID: newID("s"), Name: in.Name, Position: midpoint(ptrOr(maxPos), nil), Items: []Item{}}
-	if _, err := s.db.Exec(`INSERT INTO sections (id, name, position) VALUES (?, ?, ?)`, sec.ID, sec.Name, sec.Position); err != nil {
+	sec := Section{ID: newID("s"), Name: in.Name, Position: midpoint(ptrOr(maxPos), nil), BoardID: boardID, Items: []Item{}}
+	// The subquery yields NULL for an unknown board id instead of an FK error;
+	// board() maps NULL back onto the default board.
+	if _, err := s.db.Exec(`INSERT INTO sections (id, name, position, board_id)
+		VALUES (?, ?, ?, (SELECT id FROM boards WHERE id = ?))`, sec.ID, sec.Name, sec.Position, boardID); err != nil {
 		fail(c, http.StatusInternalServerError, err.Error())
 		return
 	}
@@ -140,8 +156,8 @@ func (s *Server) updateSection(c *gin.Context) {
 		}
 	}
 	var sec Section
-	err := s.db.QueryRow(`SELECT id, name, position, collapsed FROM sections WHERE id = ?`, c.Param("id")).
-		Scan(&sec.ID, &sec.Name, &sec.Position, &sec.Collapsed)
+	err := s.db.QueryRow(`SELECT id, name, position, collapsed, COALESCE(board_id,'b_home') FROM sections WHERE id = ?`, c.Param("id")).
+		Scan(&sec.ID, &sec.Name, &sec.Position, &sec.Collapsed, &sec.BoardID)
 	if notFound(err) {
 		fail(c, http.StatusNotFound, "section not found")
 		return
@@ -192,8 +208,8 @@ func (s *Server) reorderSection(c *gin.Context) {
 		return
 	}
 	var sec Section
-	if err := s.db.QueryRow(`SELECT id, name, position, collapsed FROM sections WHERE id = ?`, in.ID).
-		Scan(&sec.ID, &sec.Name, &sec.Position, &sec.Collapsed); err != nil {
+	if err := s.db.QueryRow(`SELECT id, name, position, collapsed, COALESCE(board_id,'b_home') FROM sections WHERE id = ?`, in.ID).
+		Scan(&sec.ID, &sec.Name, &sec.Position, &sec.Collapsed, &sec.BoardID); err != nil {
 		fail(c, http.StatusInternalServerError, err.Error())
 		return
 	}

apps/backend/internal/api/boards.go

@@ -0,0 +1,120 @@
+package api
+
+// Multiple boards — sections carry board_id; the board list is small and
+// lives next to the section tree. Deleting a board cascades its sections.
+
+import (
+	"database/sql"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+)
+
+// Board is a named dashboard page reachable at /b/<slug>.
+type Board struct {
+	ID       string  `json:"id"`
+	Slug     string  `json:"slug"`
+	Name     string  `json:"name"`
+	Position float64 `json:"position"`
+}
+
+func (s *Server) listBoards(c *gin.Context) {
+	rows, err := s.db.Query(`SELECT id, slug, name, position FROM boards ORDER BY position`)
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	defer rows.Close()
+	out := []Board{}
+	for rows.Next() {
+		var b Board
+		if err := rows.Scan(&b.ID, &b.Slug, &b.Name, &b.Position); err != nil {
+			fail(c, http.StatusInternalServerError, err.Error())
+			return
+		}
+		out = append(out, b)
+	}
+	c.JSON(http.StatusOK, out)
+}
+
+func (s *Server) createBoard(c *gin.Context) {
+	var in struct {
+		Name string `json:"name"`
+	}
+	if err := c.ShouldBindJSON(&in); err != nil || strings.TrimSpace(in.Name) == "" {
+		fail(c, http.StatusBadRequest, "name required")
+		return
+	}
+	name := strings.TrimSpace(in.Name)
+	slug := slugify(name)
+	if slug == "" {
+		slug = "board"
+	}
+	// Uniquify: 'media', 'media-2', 'media-3'…
+	base := slug
+	for i := 2; ; i++ {
+		var n int
+		_ = s.db.QueryRow(`SELECT COUNT(*) FROM boards WHERE slug = ?`, slug).Scan(&n)
+		if n == 0 {
+			break
+		}
+		slug = base + "-" + strconv.Itoa(i)
+	}
+	var maxPos sql.NullFloat64
+	_ = s.db.QueryRow(`SELECT MAX(position) FROM boards`).Scan(&maxPos)
+	b := Board{ID: newID("b"), Slug: slug, Name: name, Position: midpoint(ptrOr(maxPos), nil)}
+	if _, err := s.db.Exec(`INSERT INTO boards (id, slug, name, position) VALUES (?,?,?,?)`,
+		b.ID, b.Slug, b.Name, b.Position); err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	c.JSON(http.StatusCreated, b)
+}
+
+func (s *Server) updateBoard(c *gin.Context) {
+	var in struct {
+		Name *string `json:"name"`
+	}
+	if err := c.ShouldBindJSON(&in); err != nil || in.Name == nil || strings.TrimSpace(*in.Name) == "" {
+		fail(c, http.StatusBadRequest, "name required")
+		return
+	}
+	// Slug stays fixed on rename — links shouldn't break.
+	res, err := s.db.Exec(`UPDATE boards SET name = ? WHERE id = ?`, strings.TrimSpace(*in.Name), c.Param("id"))
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	if n, _ := res.RowsAffected(); n == 0 {
+		fail(c, http.StatusNotFound, "board not found")
+		return
+	}
+	var b Board
+	if err := s.db.QueryRow(`SELECT id, slug, name, position FROM boards WHERE id = ?`, c.Param("id")).
+		Scan(&b.ID, &b.Slug, &b.Name, &b.Position); err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	c.JSON(http.StatusOK, b)
+}
+
+func (s *Server) deleteBoard(c *gin.Context) {
+	var n int
+	_ = s.db.QueryRow(`SELECT COUNT(*) FROM boards`).Scan(&n)
+	if n <= 1 {
+		fail(c, http.StatusBadRequest, "cannot delete the last board")
+		return
+	}
+	res, err := s.db.Exec(`DELETE FROM boards 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, "board not found")
+		return
+	}
+	c.Status(http.StatusNoContent)
+}

apps/backend/internal/api/domains.go

@@ -27,7 +27,7 @@ const domainCols = `id, name, tld, active, auto_renew, alert_days_before, tags,
 	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`
+	favicon_url, lookup_error, interval_h, last_checked, position, alerts, created_at`
 
 // domainRow mirrors the domains table; JSON text columns decode on scan.
 type domainRow struct {
@@ -87,12 +87,13 @@ type domainRow struct {
 	IntervalH        int      `json:"intervalH"`
 	LastChecked      *string  `json:"lastChecked"`
 	Position         float64  `json:"position"`
+	Alerts           json.RawMessage `json:"alerts"`
 	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 tags, statuses, ns, mx, txt, v4, v6, altNames, headers, alerts 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,
@@ -104,10 +105,11 @@ func scanDomain(row interface{ Scan(...any) error }) (*domainRow, error) {
 		&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)
+		&d.Position, &alerts, &d.CreatedAt)
 	if err != nil {
 		return nil, err
 	}
+	d.Alerts = json.RawMessage(alerts)
 	d.Active = active != 0
 	d.AutoRenew = autoRenew != 0
 	d.PrivacyEnabled = privacy != 0
@@ -200,6 +202,7 @@ type domainInput struct {
 	IntervalH       *int     `json:"intervalH"`
 	Tags            []string `json:"tags"`
 	Notes           *string  `json:"notes"`
+	Alerts          json.RawMessage `json:"alerts"`
 }
 
 func (s *Server) createDomain(c *gin.Context) {
@@ -218,6 +221,13 @@ func (s *Server) createDomain(c *gin.Context) {
 	if in.Tags == nil {
 		tags = []byte("[]")
 	}
+	if in.Alerts != nil {
+		var rules alertRules
+		if err := json.Unmarshal(in.Alerts, &rules); err != nil {
+			fail(c, http.StatusBadRequest, "alerts must be an object")
+			return
+		}
+	}
 	_, err := s.db.Exec(`INSERT INTO domains
 		(id, name, tld, active, auto_renew, alert_days_before, tags, notes, interval_h, position)
 		VALUES (?,?,?,?,?,?,?,?,?,?)`,
@@ -228,6 +238,9 @@ func (s *Server) createDomain(c *gin.Context) {
 		fail(c, http.StatusConflict, "domain already tracked or insert failed")
 		return
 	}
+	if in.Alerts != nil {
+		_, _ = s.db.Exec(`UPDATE domains SET alerts = ? WHERE id = ?`, string(in.Alerts), id)
+	}
 	// First lookup runs inline so the response carries real data.
 	s.refreshDomain(id)
 	d, err := s.loadDomain(id)
@@ -298,6 +311,14 @@ func (s *Server) patchDomain(c *gin.Context) {
 		tags, _ := json.Marshal(in.Tags)
 		_, _ = s.db.Exec(`UPDATE domains SET tags = ? WHERE id = ?`, string(tags), id)
 	}
+	if in.Alerts != nil {
+		var rules alertRules
+		if err := json.Unmarshal(in.Alerts, &rules); err != nil {
+			fail(c, http.StatusBadRequest, "alerts must be an object")
+			return
+		}
+		_, _ = s.db.Exec(`UPDATE domains SET alerts = ? WHERE id = ?`, string(in.Alerts), id)
+	}
 	d, err := s.loadDomain(id)
 	if err != nil {
 		fail(c, http.StatusInternalServerError, err.Error())
@@ -338,6 +359,10 @@ func (s *Server) refreshDomain(id string) {
 		return
 	}
 	nv := viewOf(next)
+	rules := parseAlertRules(next.Alerts)
+	if rules.Mute {
+		return
+	}
 	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))
@@ -345,10 +370,19 @@ func (s *Server) refreshDomain(id string) {
 		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 {
+	// TLS threshold: alerts.certDays overrides alertDaysBefore.
+	certDays := next.AlertDaysBefore
+	if rules.CertDays > 0 {
+		certDays = rules.CertDays
+	}
+	sslNow := nv.SSLDaysUntilExpiry != nil && *nv.SSLDaysUntilExpiry <= certDays
+	sslPrev := prev.SSLDaysUntilExpiry != nil && *prev.SSLDaysUntilExpiry <= certDays
+	if sslNow && !sslPrev {
 		s.notify("domain.sslExpiring", next.Name,
 			fmt.Sprintf("TLS certificate for %s expires in %d days", next.Name, *nv.SSLDaysUntilExpiry))
 	}
+	// Subdomain discovery rides the refresh schedule, gated to once/day.
+	s.maybeSweepSubdomains(next)
 }
 
 func (s *Server) refreshDomainH(c *gin.Context) {

apps/backend/internal/api/importers.go

@@ -30,11 +30,11 @@ func (s *Server) importExternal(c *gin.Context) {
 		fail(c, http.StatusBadRequest, err.Error())
 		return
 	}
-	if err := s.replaceBoard(sections, nil); err != nil {
+	if err := s.replaceBoard(sections, nil, nil); err != nil {
 		failImport(c, err)
 		return
 	}
-	board, err := s.board()
+	board, err := s.board("")
 	if err != nil {
 		fail(c, http.StatusInternalServerError, err.Error())
 		return

apps/backend/internal/api/monitors.go

@@ -20,21 +20,22 @@ import (
 
 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`
+	retries, active, status, push_token, tags, notes, alerts, position, last_check, created_at`
 
 func scanMonitor(row interface{ Scan(...any) error }) (*monitor.Monitor, error) {
 	var m monitor.Monitor
-	var tags string
+	var tags, alerts 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)
+		&tags, &m.Notes, &alerts, &m.Position, &m.LastCheck, &m.CreatedAt)
 	if err != nil {
 		return nil, err
 	}
 	m.KeywordInvert = invert != 0
 	m.Active = active != 0
+	m.Alerts = json.RawMessage(alerts)
 	_ = json.Unmarshal([]byte(tags), &m.Tags)
 	if m.Tags == nil {
 		m.Tags = []string{}
@@ -142,6 +143,7 @@ type monitorInput struct {
 	Active        *bool    `json:"active"`
 	Tags          []string `json:"tags"`
 	Notes         *string  `json:"notes"`
+	Alerts        json.RawMessage `json:"alerts"`
 }
 
 func validMonitorType(t string) bool {
@@ -209,17 +211,26 @@ func (s *Server) createMonitor(c *gin.Context) {
 	if in.Tags == nil {
 		tags = []byte("[]")
 	}
+	alerts := "{}"
+	if in.Alerts != nil {
+		var rules alertRules
+		if err := json.Unmarshal(in.Alerts, &rules); err != nil {
+			fail(c, http.StatusBadRequest, "alerts must be an object")
+			return
+		}
+		alerts = string(in.Alerts)
+	}
 	_, 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 (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)`,
+		 retries, active, push_token, tags, notes, alerts, 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)
+		token, string(tags), strOr(in.Notes), alerts, float64(time.Now().UnixNano())/1e9)
 	if err != nil {
 		fail(c, http.StatusInternalServerError, err.Error())
 		return
@@ -294,6 +305,14 @@ func (s *Server) patchMonitor(c *gin.Context) {
 		tags, _ := json.Marshal(in.Tags)
 		_, _ = s.db.Exec(`UPDATE monitors SET tags = ? WHERE id = ?`, string(tags), id)
 	}
+	if in.Alerts != nil {
+		var rules alertRules
+		if err := json.Unmarshal(in.Alerts, &rules); err != nil {
+			fail(c, http.StatusBadRequest, "alerts must be an object")
+			return
+		}
+		_, _ = s.db.Exec(`UPDATE monitors SET alerts = ? WHERE id = ?`, string(in.Alerts), id)
+	}
 	if in.Active != nil {
 		// pause/resume flips the stored status back to pending for a fresh probe
 		status := "pending"
@@ -412,6 +431,9 @@ func (s *Server) runScheduler(done <-chan struct{}) {
 				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 sessions WHERE expires_at < strftime('%Y-%m-%dT%H:%M:%fZ','now')`); err != nil {
+				s.log.Error("session prune", zap.Error(err))
+			}
 			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))
 			}
@@ -473,8 +495,13 @@ func (s *Server) runCheck(m *monitor.Monitor) *monitor.Result {
 	s.writeHeartbeat(m, res)
 	prev := m.Status
 	next := "down"
+	rules := parseAlertRules(m.Alerts)
 	if res.Up {
 		next = "up"
+	} else if n := rules.ConsecutiveFailures; n > 1 && prev != "down" &&
+		s.consecutiveDowns(m.ID, n) < n {
+		// Flap damping: hold the previous status until N checks in a row fail.
+		next = prev
 	}
 	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 {
@@ -483,6 +510,14 @@ func (s *Server) runCheck(m *monitor.Monitor) *monitor.Result {
 	if prev != next && prev != "pending" {
 		s.onMonitorTransition(m, prev, next)
 	}
+	// Latency warn: notify once when ping crosses above the threshold.
+	if rules.LatencyWarnMs > 0 && res.Up && res.PingMs >= rules.LatencyWarnMs &&
+		!rules.Mute && prev != "pending" && !s.inMaintenance(m.ID) {
+		if p := s.prevPing(m.ID); p >= 0 && p < rules.LatencyWarnMs {
+			s.notify("monitor.slow", m.Name,
+				fmt.Sprintf("Monitor %q latency %dms (threshold %dms)", m.Name, res.PingMs, rules.LatencyWarnMs))
+		}
+	}
 	return res
 }
 
@@ -507,6 +542,9 @@ func (s *Server) onMonitorTransition(m *monitor.Monitor, prev, next string) {
 		return
 	}
 	s.autoIncident(m.ID, m.Name, next)
+	if parseAlertRules(m.Alerts).Mute {
+		return
+	}
 	target := m.URL
 	if target == "" {
 		target = m.Hostname

apps/backend/internal/api/notify.go

@@ -3,19 +3,29 @@ package api
 import (
 	"bytes"
 	"context"
+	"crypto/tls"
 	"encoding/json"
+	"fmt"
+	"net"
 	"net/http"
+	"net/smtp"
+	"strings"
 	"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.
+// Notifications: a small transport registry. Each transport is configured via
+// the settings key notify_<name> holding a JSON object of fields; a transport
+// is active when its required fields are set. Multiple transports may be
+// active — notify() fans out to all of them.
+//
+// notify_webhook keeps back-compat: a plain string value means {"url": value}.
+//
+// Secrets (smtp_pass, tokens) live in settings like any other value and are
+// never logged. Single-user self-hosted is the threat model; P5d auth gates
+// the settings endpoint when enabled.
 
 type notifyPayload struct {
 	Event   string `json:"event"`
@@ -26,54 +36,213 @@ type notifyPayload struct {
 	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
+type transport struct {
+	name     string
+	required []string
+	send     func(ctx context.Context, cfg map[string]string, p notifyPayload) error
 }
 
-// notify fires the webhook asynchronously; delivery failures are logged, never fatal.
+var transports = []transport{
+	{"webhook", []string{"url"}, sendWebhook},
+	{"slack", []string{"url"}, sendSlack},
+	{"discord", []string{"url"}, sendDiscord},
+	{"telegram", []string{"token", "chat_id"}, sendTelegram},
+	{"gotify", []string{"server", "token"}, sendGotify},
+	{"ntfy", []string{"server", "topic"}, sendNtfy},
+	{"smtp", []string{"host", "port", "from", "to"}, sendSMTP},
+}
+
+// notifyCfg loads notify_<name> from settings. Values are JSON: an object for
+// presets, or a bare string (legacy webhook) meaning {"url": s}.
+func (s *Server) notifyCfg(name string) map[string]string {
+	var raw string
+	if err := s.db.QueryRow(`SELECT value FROM settings WHERE key = 'notify_`+name+`'`).Scan(&raw); err != nil {
+		return nil
+	}
+	var m map[string]any
+	if err := json.Unmarshal([]byte(raw), &m); err != nil {
+		var str string
+		if err := json.Unmarshal([]byte(raw), &str); err == nil && name == "webhook" {
+			return map[string]string{"url": str}
+		}
+		return nil
+	}
+	out := make(map[string]string, len(m))
+	for k, v := range m {
+		if str, ok := v.(string); ok {
+			out[k] = str
+		}
+	}
+	return out
+}
+
+// configured reports whether all required fields are present. Partially
+// configured transports count as configured so their send error surfaces.
+func (t transport) configured(cfg map[string]string) bool {
+	if cfg == nil {
+		return false
+	}
+	for _, k := range t.required {
+		if strings.TrimSpace(cfg[k]) == "" {
+			return false
+		}
+	}
+	return true
+}
+
+// notify fans an event out to every configured transport, asynchronously.
 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)
+	for _, tr := range transports {
+		cfg := s.notifyCfg(tr.name)
+		if !tr.configured(cfg) {
+			continue
+		}
+		tr, cfg := tr, cfg
+		go func() {
+			ctx, cancel := context.WithTimeout(context.Background(), 15*time.Second)
+			defer cancel()
+			if err := tr.send(ctx, cfg, p); err != nil {
+				s.log.Warn("notify failed", zap.String("transport", tr.name),
+					zap.String("event", event), zap.Error(err))
+			}
+		}()
+	}
 }
 
-func (s *Server) deliver(url string, p notifyPayload) {
-	body, _ := json.Marshal(p)
-	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
-	defer cancel()
+// postJSON posts a JSON body and reports non-2xx as an error.
+func postJSON(ctx context.Context, url string, payload any, headers map[string]string) error {
+	if parseHTTPURL(url) == "" {
+		return fmt.Errorf("not an http(s) URL")
+	}
+	body, _ := json.Marshal(payload)
 	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewReader(body))
 	if err != nil {
-		return
+		return err
 	}
 	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)
+	for k, v := range headers {
+		req.Header.Set(k, v)
+	}
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
-		s.log.Warn("webhook delivery failed", zap.String("event", p.Event), zap.Error(err))
-		return
+		return err
 	}
-	resp.Body.Close()
-	if resp.StatusCode >= 400 {
-		s.log.Warn("webhook rejected", zap.String("event", p.Event), zap.Int("status", resp.StatusCode))
+	defer resp.Body.Close()
+	if resp.StatusCode >= 300 {
+		return fmt.Errorf("returned %d", resp.StatusCode)
 	}
+	return nil
+}
+
+func sendWebhook(ctx context.Context, cfg map[string]string, p notifyPayload) error {
+	return postJSON(ctx, cfg["url"], p, map[string]string{
+		"Title": p.Text, "X-Dash-Event": p.Event,
+	})
+}
+
+func sendSlack(ctx context.Context, cfg map[string]string, p notifyPayload) error {
+	return postJSON(ctx, cfg["url"], map[string]any{"text": p.Text}, nil)
+}
+
+func sendDiscord(ctx context.Context, cfg map[string]string, p notifyPayload) error {
+	return postJSON(ctx, cfg["url"], map[string]any{"content": p.Content}, nil)
+}
+
+func sendTelegram(ctx context.Context, cfg map[string]string, p notifyPayload) error {
+	base := strings.TrimRight(cfg["server"], "/") // optional self-hosted bot-api
+	if base == "" {
+		base = "https://api.telegram.org"
+	}
+	url := base + "/bot" + cfg["token"] + "/sendMessage"
+	return postJSON(ctx, url, map[string]any{
+		"chat_id": cfg["chat_id"], "text": p.Text,
+	}, nil)
+}
+
+func sendGotify(ctx context.Context, cfg map[string]string, p notifyPayload) error {
+	server := strings.TrimRight(cfg["server"], "/")
+	url := server + "/message?token=" + cfg["token"]
+	return postJSON(ctx, url, map[string]any{
+		"title": p.Name, "message": p.Message, "priority": 5,
+	}, nil)
+}
+
+func sendNtfy(ctx context.Context, cfg map[string]string, p notifyPayload) error {
+	server := strings.TrimRight(cfg["server"], "/")
+	url := server + "/" + strings.TrimLeft(cfg["topic"], "/")
+	if parseHTTPURL(url) == "" {
+		return fmt.Errorf("not an http(s) URL")
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, strings.NewReader(p.Message))
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Title", p.Name)
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode >= 300 {
+		return fmt.Errorf("returned %d", resp.StatusCode)
+	}
+	return nil
+}
+
+// sendSMTP uses net/smtp with a hard deadline, opportunistic STARTTLS, and
+// plain auth only when a user is configured.
+func sendSMTP(ctx context.Context, cfg map[string]string, p notifyPayload) error {
+	host, port := cfg["host"], cfg["port"]
+	addr := net.JoinHostPort(host, port)
+	d := net.Dialer{Timeout: 10 * time.Second}
+	conn, err := d.DialContext(ctx, "tcp", addr)
+	if err != nil {
+		return err
+	}
+	defer conn.Close()
+	if dl, ok := ctx.Deadline(); ok {
+		_ = conn.SetDeadline(dl)
+	} else {
+		_ = conn.SetDeadline(time.Now().Add(15 * time.Second))
+	}
+	c, err := smtp.NewClient(conn, host)
+	if err != nil {
+		return err
+	}
+	defer c.Close()
+	if ok, _ := c.Extension("STARTTLS"); ok {
+		if err := c.StartTLS(&tls.Config{ServerName: host}); err != nil {
+			return err
+		}
+	}
+	if cfg["user"] != "" {
+		if err := c.Auth(smtp.PlainAuth("", cfg["user"], cfg["pass"], host)); err != nil {
+			return err
+		}
+	}
+	if err := c.Mail(cfg["from"]); err != nil {
+		return err
+	}
+	for _, rcpt := range strings.Split(cfg["to"], ",") {
+		if err := c.Rcpt(strings.TrimSpace(rcpt)); err != nil {
+			return err
+		}
+	}
+	w, err := c.Data()
+	if err != nil {
+		return err
+	}
+	msg := fmt.Sprintf("From: %s\r\nTo: %s\r\nSubject: [Dash] %s\r\n\r\n%s\r\n",
+		cfg["from"], cfg["to"], p.Text, p.Message)
+	if _, err := w.Write([]byte(msg)); err != nil {
+		return err
+	}
+	if err := w.Close(); err != nil {
+		return err
+	}
+	return c.Quit()
 }
 
 // parseHTTPURL enforces http/https on the configured webhook — same SSRF
@@ -85,12 +254,42 @@ func parseHTTPURL(raw string) string {
 	return raw
 }
 
-// notifyTest lets the settings UI verify the configured webhook.
+// notifyTest sends a test event synchronously so the UI gets a real result.
+// Optional body {"transport": "smtp"} limits the test to one transport.
 func (s *Server) notifyTest(c *gin.Context) {
-	if s.webhookURL() == "" {
-		fail(c, http.StatusBadRequest, "notify_webhook not configured")
+	var in struct {
+		Transport string `json:"transport"`
+	}
+	_ = c.ShouldBindJSON(&in)
+	p := notifyPayload{Event: "test", Name: "dash", Text: "Dash test notification",
+		Content: "Dash test notification", Message: "Dash test notification",
+		At: time.Now().UTC().Format(time.RFC3339)}
+
+	results := map[string]string{}
+	for _, tr := range transports {
+		if in.Transport != "" && tr.name != in.Transport {
+			continue
+		}
+		cfg := s.notifyCfg(tr.name)
+		if !tr.configured(cfg) {
+			if in.Transport != "" {
+				fail(c, http.StatusBadRequest, tr.name+" not configured")
+				return
+			}
+			continue
+		}
+		ctx, cancel := context.WithTimeout(c.Request.Context(), 15*time.Second)
+		err := tr.send(ctx, cfg, p)
+		cancel()
+		if err != nil {
+			results[tr.name] = "error: " + err.Error()
+		} else {
+			results[tr.name] = "ok"
+		}
+	}
+	if len(results) == 0 {
+		fail(c, http.StatusBadRequest, "no notification transport configured")
 		return
 	}
-	s.notify("test", "dash", "Dash test notification")
-	c.JSON(http.StatusOK, gin.H{"status": "sent"})
+	c.JSON(http.StatusOK, gin.H{"results": results})
 }

apps/backend/internal/api/subdomains.go

@@ -0,0 +1,95 @@
+package api
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/tdvorak/dash/internal/domain"
+	"go.uber.org/zap"
+)
+
+// Subdomain discovery: crt.sh + DNS, persisted per domain and swept at most
+// once a day inside the domain refresh. CT names are untrusted strings —
+// stored as text, rendered as text, never linked.
+
+type subdomainView struct {
+	Name      string   `json:"name"`
+	IPs       []string `json:"ips"`
+	FirstSeen string   `json:"firstSeen"`
+	LastSeen  string   `json:"lastSeen"`
+}
+
+func (s *Server) listSubdomains(c *gin.Context) {
+	rows, err := s.db.Query(`SELECT name, ips, first_seen, last_seen
+		FROM subdomains WHERE domain_id = ? ORDER BY name`, c.Param("id"))
+	if err != nil {
+		fail(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	defer rows.Close()
+	out := []subdomainView{}
+	for rows.Next() {
+		var v subdomainView
+		var ips string
+		if err := rows.Scan(&v.Name, &ips, &v.FirstSeen, &v.LastSeen); err != nil {
+			continue
+		}
+		_ = json.Unmarshal([]byte(ips), &v.IPs)
+		if v.IPs == nil {
+			v.IPs = []string{}
+		}
+		out = append(out, v)
+	}
+	c.JSON(http.StatusOK, out)
+}
+
+// refreshSubdomains forces a discovery run for one domain.
+func (s *Server) refreshSubdomains(c *gin.Context) {
+	id := c.Param("id")
+	d, err := s.loadDomain(id)
+	if notFound(err) {
+		fail(c, http.StatusNotFound, "domain not found")
+		return
+	}
+	s.sweepSubdomains(d)
+	s.listSubdomains(c)
+}
+
+// sweepSubdomains runs CT+DNS discovery and upserts rows. Called from
+// refreshDomain when sub_checked_at is stale (>24h), and on manual refresh.
+func (s *Server) sweepSubdomains(d *domainRow) {
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+	found, err := domain.DiscoverSubdomains(ctx, d.Name)
+	if err != nil {
+		s.log.Warn("subdomain discovery", zap.String("domain", d.Name), zap.Error(err))
+		return
+	}
+	for _, f := range found {
+		ips, _ := json.Marshal(f.IPs)
+		if _, err := s.db.Exec(`INSERT INTO subdomains (id, domain_id, name, ips)
+			VALUES (?,?,?,?)
+			ON CONFLICT(domain_id, name) DO UPDATE SET ips = excluded.ips,
+				last_seen = strftime('%Y-%m-%dT%H:%M:%fZ','now')`,
+			newID("sub"), d.ID, f.Name, string(ips)); err != nil {
+			s.log.Error("subdomain upsert", zap.Error(err))
+		}
+	}
+	_, _ = s.db.Exec(`UPDATE domains SET sub_checked_at = strftime('%Y-%m-%dT%H:%M:%fZ','now') WHERE id = ?`, d.ID)
+}
+
+// maybeSweepSubdomains gates discovery to once per day per domain.
+func (s *Server) maybeSweepSubdomains(d *domainRow) {
+	var checked *string
+	_ = s.db.QueryRow(`SELECT sub_checked_at FROM domains WHERE id = ?`, d.ID).Scan(&checked)
+	if checked != nil && *checked != "" {
+		if t, err := time.Parse("2006-01-02T15:04:05.000Z", *checked); err == nil &&
+			time.Since(t) < 24*time.Hour {
+			return
+		}
+	}
+	s.sweepSubdomains(d)
+}

apps/backend/internal/api/systems.go

@@ -41,13 +41,46 @@ type StatSample struct {
 	Load15     float64           `json:"load15"`
 	Temps      map[string]float64 `json:"temps"`
 	Containers []ContainerStat   `json:"containers"`
+	// Optional collectors — present only when the host has the tools.
+	Smart []SmartDisk `json:"smart,omitempty"`
+	ZFS   []ZFSPool   `json:"zfs,omitempty"`
+	GPU   []GPUStat   `json:"gpu,omitempty"`
 }
 
-// ContainerStat is one Docker container's liveness; per-container CPU/mem
-// needs cgroup sampling — deferred (v1 ships name+state only).
+// ContainerStat is one Docker container's liveness plus resource use.
+// CPU is percent of one core (may exceed 100); Mem* are bytes. Zero when the
+// agent couldn't reach the stats endpoint.
 type ContainerStat struct {
-	Name  string `json:"name"`
-	State string `json:"state"`
+	Name     string  `json:"name"`
+	State    string  `json:"state"`
+	CPU      float64 `json:"cpu,omitempty"`
+	MemUsed  float64 `json:"memUsed,omitempty"`
+	MemLimit float64 `json:"memLimit,omitempty"`
+}
+
+// SmartDisk is one drive's SMART summary (smartctl).
+type SmartDisk struct {
+	Device string  `json:"device"`
+	Model  string  `json:"model"`
+	Passed *bool   `json:"passed,omitempty"`
+	TempC  float64 `json:"tempC,omitempty"`
+}
+
+// ZFSPool is one pool's health and space (zpool).
+type ZFSPool struct {
+	Name   string  `json:"name"`
+	Health string  `json:"health"`
+	Size   float64 `json:"size"`
+	Free   float64 `json:"free"`
+}
+
+// GPUStat is one GPU's basic metrics (sysfs or nvidia-smi).
+type GPUStat struct {
+	Name     string  `json:"name"`
+	TempC    float64 `json:"tempC,omitempty"`
+	UtilPct  float64 `json:"utilPct,omitempty"`
+	MemUsed  float64 `json:"memUsed,omitempty"`
+	MemTotal float64 `json:"memTotal,omitempty"`
 }
 
 // System is one monitored host; `latest` is the newest StatSample.

apps/backend/internal/api/transfer.go

@@ -28,6 +28,7 @@ type Export struct {
 	Version  int                        `json:"version"`
 	Settings map[string]json.RawMessage `json:"settings"`
 	Sections []Section                  `json:"sections"`
+	Boards   []Board                    `json:"boards,omitempty"`
 	Monitors []json.RawMessage          `json:"monitors,omitempty"`
 	Domains  []json.RawMessage          `json:"domains,omitempty"`
 	Systems  []json.RawMessage          `json:"systems,omitempty"`
@@ -74,12 +75,21 @@ func (s *Server) exportBoard(c *gin.Context) {
 		fail(c, http.StatusInternalServerError, err.Error())
 		return
 	}
-	sections, err := s.board()
+	sections, err := s.board("")
 	if err != nil {
 		fail(c, http.StatusInternalServerError, err.Error())
 		return
 	}
 	ex := Export{Version: 2, Settings: settings, Sections: sections}
+	if bRows, err := s.db.Query(`SELECT id, slug, name, position FROM boards ORDER BY position`); err == nil {
+		for bRows.Next() {
+			var b Board
+			if bRows.Scan(&b.ID, &b.Slug, &b.Name, &b.Position) == nil {
+				ex.Boards = append(ex.Boards, b)
+			}
+		}
+		bRows.Close()
+	}
 	for _, t := range []struct {
 		name string
 		dst  *[]json.RawMessage
@@ -103,11 +113,11 @@ func (s *Server) importBoard(c *gin.Context) {
 		fail(c, http.StatusBadRequest, "invalid export payload")
 		return
 	}
-	if err := s.replaceBoard(in.Sections, in.Settings); err != nil {
+	if err := s.replaceBoard(in.Sections, in.Boards, in.Settings); err != nil {
 		failImport(c, err)
 		return
 	}
-	sections, err := s.board()
+	sections, err := s.board("")
 	if err != nil {
 		fail(c, http.StatusInternalServerError, err.Error())
 		return
@@ -116,8 +126,10 @@ func (s *Server) importBoard(c *gin.Context) {
 }
 
 // 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 {
+// Dash export import and the external-config importers. A payload carrying
+// boards replaces the board list too; one without (v1/v2 exports, foreign
+// imports) leaves boards alone and sections land on the default board.
+func (s *Server) replaceBoard(sections []Section, boards []Board, settings map[string]json.RawMessage) error {
 	tx, err := s.db.Begin()
 	if err != nil {
 		return err
@@ -129,12 +141,35 @@ func (s *Server) replaceBoard(sections []Section, settings map[string]json.RawMe
 			return err
 		}
 	}
+	if len(boards) > 0 {
+		if _, err := tx.Exec(`DELETE FROM boards`); err != nil {
+			return err
+		}
+		for _, b := range boards {
+			id, slug := b.ID, b.Slug
+			if slug == "" {
+				slug = slugify(b.Name)
+			}
+			if id == "" || slug == "" {
+				return fmt.Errorf("%w: board missing id or slug", errBadInput)
+			}
+			if _, err := tx.Exec(`INSERT INTO boards (id, slug, name, position) VALUES (?, ?, ?, ?)`,
+				id, slug, orDefault(b.Name, slug), b.Position); err != nil {
+				return err
+			}
+		}
+		// The default board must survive import — orphaned sections map to it.
+		if _, err := tx.Exec(`INSERT OR IGNORE INTO boards (id, slug, name, position) VALUES ('b_home','home','Home',0)`); 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 {
+		if _, err := tx.Exec(`INSERT INTO sections (id, name, position, collapsed, board_id)
+			VALUES (?, ?, ?, ?, (SELECT id FROM boards WHERE id = ?))`,
+			sec.ID, sec.Name, sec.Position, sec.Collapsed, sec.BoardID); err != nil {
 			return err
 		}
 		for _, it := range sec.Items {

apps/backend/internal/db/migrations/0007_alerts.sql

@@ -0,0 +1,10 @@
+-- +goose Up
+-- Per-target alert rules as a JSON blob: {consecutiveFailures, latencyWarnMs,
+-- certDays, mute}. '{}' = defaults (alert on first failure, no latency rule,
+-- cert threshold = alert_days_before, unmuted).
+ALTER TABLE monitors ADD COLUMN alerts JSON NOT NULL DEFAULT '{}';
+ALTER TABLE domains  ADD COLUMN alerts JSON NOT NULL DEFAULT '{}';
+
+-- +goose Down
+ALTER TABLE monitors DROP COLUMN alerts;
+ALTER TABLE domains  DROP COLUMN alerts;

apps/backend/internal/db/migrations/0008_subdomains.sql

@@ -0,0 +1,18 @@
+-- +goose Up
+CREATE TABLE subdomains (
+    id         TEXT PRIMARY KEY,
+    domain_id  TEXT NOT NULL REFERENCES domains(id) ON DELETE CASCADE,
+    name       TEXT NOT NULL,
+    ips        JSON NOT NULL DEFAULT '[]',
+    first_seen TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now')),
+    last_seen  TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now')),
+    UNIQUE(domain_id, name)
+);
+CREATE INDEX subdomains_domain_idx ON subdomains(domain_id);
+
+-- Discovery runs at most once per day per domain, inside the domain sweep.
+ALTER TABLE domains ADD COLUMN sub_checked_at TEXT;
+
+-- +goose Down
+ALTER TABLE domains DROP COLUMN sub_checked_at;
+DROP TABLE IF EXISTS subdomains;

apps/backend/internal/db/migrations/0009_auth.sql

@@ -0,0 +1,22 @@
+-- +goose Up
+-- Opt-in local auth. Empty users table = setup mode; auth_enabled settings
+-- key gates the middleware. Sessions live in SQLite — restart-safe, and a
+-- `dash-agent`-style bearer token path is unaffected.
+CREATE TABLE users (
+    id         TEXT PRIMARY KEY,
+    username   TEXT NOT NULL UNIQUE,
+    pass_hash  TEXT NOT NULL,
+    created_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now'))
+);
+
+CREATE TABLE sessions (
+    token      TEXT PRIMARY KEY,
+    user_id    TEXT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    created_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now')),
+    expires_at TEXT NOT NULL
+);
+CREATE INDEX sessions_expiry_idx ON sessions(expires_at);
+
+-- +goose Down
+DROP TABLE IF EXISTS sessions;
+DROP TABLE IF EXISTS users;

apps/backend/internal/db/migrations/0010_boards.sql

@@ -0,0 +1,32 @@
+-- +goose Up
+-- Multiple boards. Every section belongs to exactly one board; the seeded
+-- 'home' board adopts existing rows. NULL board_id maps to 'home' at read
+-- time so old imports/exports keep working without a backfill.
+CREATE TABLE boards (
+    id         TEXT PRIMARY KEY,
+    slug       TEXT NOT NULL UNIQUE,
+    name       TEXT NOT NULL,
+    position   REAL NOT NULL,
+    created_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now'))
+);
+INSERT INTO boards (id, slug, name, position) VALUES ('b_home', 'home', 'Home', 1024);
+
+ALTER TABLE sections ADD COLUMN board_id TEXT REFERENCES boards(id) ON DELETE CASCADE;
+UPDATE sections SET board_id = 'b_home';
+CREATE INDEX sections_board_pos ON sections(board_id, position);
+
+-- +goose Down
+DROP INDEX IF EXISTS sections_board_pos;
+-- SQLite can't drop columns pre-3.35; rebuild instead.
+CREATE TABLE sections_new (
+    id         TEXT PRIMARY KEY,
+    name       TEXT NOT NULL,
+    position   REAL NOT NULL,
+    collapsed  INTEGER NOT NULL DEFAULT 0,
+    created_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ', 'now'))
+);
+INSERT INTO sections_new (id, name, position, collapsed, created_at)
+    SELECT id, name, position, collapsed, created_at FROM sections;
+DROP TABLE sections;
+ALTER TABLE sections_new RENAME TO sections;
+DROP TABLE boards;

apps/backend/internal/domain/subdomain.go

@@ -0,0 +1,128 @@
+package domain
+
+// Subdomain discovery: certificate-transparency names from crt.sh, filtered
+// to the owned suffix, then resolved via A/AAAA. Both network steps are
+// injected seams so tests never leave the process.
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"strings"
+	"sync"
+	"time"
+)
+
+// Subdomain is one discovered hostname and its resolved addresses.
+type Subdomain struct {
+	Name string   `json:"name"`
+	IPs  []string `json:"ips"`
+}
+
+// CTNames returns candidate hostnames for domain from crt.sh.
+// Seam: tests substitute a stub.
+var CTNames = func(ctx context.Context, domain string) ([]string, error) {
+	url := "https://crt.sh/?q=%25." + domain + "&output=json"
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
+	if err != nil {
+		return nil, err
+	}
+	resp, err := (&http.Client{Timeout: 20 * time.Second}).Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("crt.sh unreachable")
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != http.StatusOK {
+		return nil, fmt.Errorf("crt.sh returned %d", resp.StatusCode)
+	}
+	// Bound the response — popular domains can return megabytes.
+	var rows []struct {
+		NameValue  string `json:"name_value"`
+		CommonName string `json:"common_name"`
+	}
+	if err := json.NewDecoder(io.LimitReader(resp.Body, 8<<20)).Decode(&rows); err != nil {
+		return nil, fmt.Errorf("crt.sh decode failed")
+	}
+	var out []string
+	for _, r := range rows {
+		out = append(out, r.NameValue, r.CommonName)
+	}
+	return out, nil
+}
+
+// ResolveIPs returns A/AAAA addresses for a hostname. Seam: tests stub it.
+var ResolveIPs = func(ctx context.Context, name string) ([]string, error) {
+	addrs, err := net.DefaultResolver.LookupIP(ctx, "ip", name)
+	if err != nil {
+		return nil, err
+	}
+	out := make([]string, 0, len(addrs))
+	for _, a := range addrs {
+		out = append(out, a.String())
+	}
+	return out, nil
+}
+
+// FilterCTNames reduces raw cert names to owned, canonical hostnames:
+// lowercase, wildcard prefix stripped, must equal domain or end in .domain.
+// CT names are untrusted text — stored and rendered as text only.
+func FilterCTNames(raw []string, domain string) []string {
+	suffix := "." + domain
+	seen := map[string]bool{}
+	out := make([]string, 0, len(raw))
+	for _, r := range raw {
+		for _, name := range strings.Split(r, "\n") {
+			name = strings.ToLower(strings.TrimSpace(name))
+			name = strings.TrimPrefix(name, "*.")
+			if name == "" || (!strings.HasSuffix(name, suffix) && name != domain) {
+				continue
+			}
+			if strings.ContainsAny(name, " \t/\\\"'<>@") {
+				continue // cert names are untrusted; drop malformed entries
+			}
+			if !seen[name] {
+				seen[name] = true
+				out = append(out, name)
+			}
+		}
+	}
+	return out
+}
+
+// DiscoverSubdomains queries CT and resolves each surviving name, bounded:
+// at most 500 candidates considered, 100 resolved, 8 concurrent lookups.
+func DiscoverSubdomains(ctx context.Context, domain string) ([]Subdomain, error) {
+	raw, err := CTNames(ctx, domain)
+	if err != nil {
+		return nil, err
+	}
+	names := FilterCTNames(raw, domain)
+	if len(names) > 500 {
+		names = names[:500]
+	}
+	if len(names) > 100 {
+		names = names[:100]
+	}
+	out := make([]Subdomain, len(names))
+	var wg sync.WaitGroup
+	sem := make(chan struct{}, 8)
+	for i, name := range names {
+		out[i].Name = name
+		wg.Add(1)
+		sem <- struct{}{}
+		go func(i int, name string) {
+			defer wg.Done()
+			defer func() { <-sem }()
+			rctx, cancel := context.WithTimeout(ctx, 3*time.Second)
+			defer cancel()
+			if ips, err := ResolveIPs(rctx, name); err == nil {
+				out[i].IPs = ips
+			}
+		}(i, name)
+	}
+	wg.Wait()
+	return out, nil
+}

apps/backend/internal/domain/subdomain_test.go

@@ -0,0 +1,29 @@
+package domain
+
+import "testing"
+
+func TestFilterCTNames(t *testing.T) {
+	raw := []string{
+		"api.example.com\nwww.example.com",
+		"*.example.com",
+		"example.com",
+		"other.com",
+		"api.example.com", // dup
+		"sub.api.example.com",
+		"evil name.example.com",
+		"example.com.evil.com",
+	}
+	got := FilterCTNames(raw, "example.com")
+	want := map[string]bool{
+		"api.example.com": true, "www.example.com": true,
+		"example.com": true, "sub.api.example.com": true,
+	}
+	if len(got) != len(want) {
+		t.Fatalf("got %v", got)
+	}
+	for _, n := range got {
+		if !want[n] {
+			t.Fatalf("unexpected name %q", n)
+		}
+	}
+}

apps/backend/internal/monitor/monitor.go

@@ -42,6 +42,7 @@ type Monitor struct {
 	PushToken     string    `json:"pushToken,omitempty"`
 	Tags          []string  `json:"tags"`
 	Notes         string    `json:"notes"`
+	Alerts        json.RawMessage `json:"alerts"`
 	Position      float64   `json:"position"`
 	LastCheck     *string   `json:"lastCheck"`
 	CreatedAt     string    `json:"createdAt"`

apps/backend/internal/widget/embed.go

@@ -0,0 +1,30 @@
+package widget
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+)
+
+// Embed renders a sandboxed iframe client-side — registered only so
+// /api/widgets/types lists it. The browser fetches the framed page, not the
+// server (remote content may be LAN-only or need the user's cookies).
+type embed struct{}
+
+func init() { Register(embed{}) }
+
+func (embed) Meta() Type {
+	return Type{
+		Type:        "embed",
+		Name:        "Embed",
+		Description: "Embed any page in a tile",
+		Local:       true,
+		Fields: []Field{
+			{Key: "url", Label: "URL", Placeholder: "https://…", Required: true},
+		},
+	}
+}
+
+func (embed) Fetch(context.Context, json.RawMessage) (any, error) {
+	return nil, fmt.Errorf("embed renders client-side")
+}

apps/backend/internal/widget/jsonpath.go

@@ -0,0 +1,89 @@
+package widget
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// JSON status: GET a URL, extract one value by dot/bracket path
+// ("data.status", "items[0].name"), render it in a tile. Covers the
+// "is API X alive / what does it report" case without per-service widgets.
+type jsonpath struct{}
+
+func init() { Register(jsonpath{}) }
+
+func (jsonpath) Meta() Type {
+	return Type{
+		Type:        "jsonpath",
+		Name:        "JSON value",
+		Description: "Extract one value from a JSON endpoint",
+		Fields: []Field{
+			{Key: "url", Label: "URL", Placeholder: "https://api…/status", Required: true},
+			{Key: "path", Label: "Path", Placeholder: "data.status", Required: true},
+			{Key: "header", Label: "Header", Placeholder: "Authorization: Bearer …"},
+			{Key: "label", Label: "Label", Placeholder: "Status"},
+		},
+	}
+}
+
+func (jsonpath) Fetch(ctx context.Context, cfg json.RawMessage) (any, error) {
+	url := cfgStr(cfg, "url")
+	path := cfgStr(cfg, "path")
+	if url == "" || path == "" {
+		return nil, fmt.Errorf("url and path required")
+	}
+	if !strings.HasPrefix(url, "http://") && !strings.HasPrefix(url, "https://") {
+		return nil, fmt.Errorf("url must be http(s)")
+	}
+	var headers map[string]string
+	if h := cfgStr(cfg, "header"); h != "" {
+		if k, v, ok := strings.Cut(h, ":"); ok {
+			headers = map[string]string{strings.TrimSpace(k): strings.TrimSpace(v)}
+		}
+	}
+	var doc any
+	if err := getJSON(ctx, url, headers, &doc); err != nil {
+		return nil, err
+	}
+	v, ok := jsonPath(doc, path)
+	if !ok {
+		return nil, fmt.Errorf("path %q not found", path)
+	}
+	return map[string]any{"value": v, "label": cfgStr(cfg, "label")}, nil
+}
+
+// jsonPath walks doc along a path like "a.b[0].c". Segments split on dots;
+// a trailing [n] indexes into arrays. Returns false on any miss.
+func jsonPath(doc any, path string) (any, bool) {
+	cur := doc
+	for _, seg := range strings.Split(path, ".") {
+		name, rest, _ := strings.Cut(seg, "[")
+		if name != "" {
+			m, ok := cur.(map[string]any)
+			if !ok {
+				return nil, false
+			}
+			cur, ok = m[name]
+			if !ok {
+				return nil, false
+			}
+		}
+		for rest != "" {
+			idxStr, tail, _ := strings.Cut(rest, "]")
+			i, err := strconv.Atoi(idxStr)
+			if err != nil {
+				return nil, false
+			}
+			arr, ok := cur.([]any)
+			if !ok || i < 0 || i >= len(arr) {
+				return nil, false
+			}
+			cur = arr[i]
+			rest = strings.TrimPrefix(tail, "[")
+		}
+	}
+	return cur, true
+}

apps/backend/internal/widget/jsonpath_test.go

@@ -0,0 +1,80 @@
+package widget
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+func TestJSONPathWalk(t *testing.T) {
+	doc := map[string]any{
+		"data": map[string]any{
+			"status": "ok",
+			"items":  []any{map[string]any{"name": "first"}, "second"},
+			"nested": []any{[]any{float64(42)}},
+		},
+	}
+	cases := []struct {
+		path string
+		want any
+		ok   bool
+	}{
+		{"data.status", "ok", true},
+		{"data.items[0].name", "first", true},
+		{"data.items[1]", "second", true},
+		{"data.nested[0][0]", float64(42), true},
+		{"data.missing", nil, false},
+		{"data.items[9]", nil, false},
+		{"data.items[-1]", nil, false},
+		{"data.status.x", nil, false},
+		{"data.items[x]", nil, false},
+		{"data.status[0]", nil, false},
+	}
+	for _, tc := range cases {
+		got, ok := jsonPath(doc, tc.path)
+		if ok != tc.ok || (ok && got != tc.want) {
+			t.Errorf("path %q: got %v,%v want %v,%v", tc.path, got, ok, tc.want, tc.ok)
+		}
+	}
+}
+
+func TestJSONPathFetch(t *testing.T) {
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.Header.Get("Authorization") != "Bearer tok" {
+			w.WriteHeader(http.StatusUnauthorized)
+			return
+		}
+		w.Header().Set("Content-Type", "application/json")
+		_, _ = w.Write([]byte(`{"data":{"status":"degraded"}}`))
+	}))
+	defer srv.Close()
+
+	cfg, _ := json.Marshal(map[string]any{
+		"url":    srv.URL,
+		"path":   "data.status",
+		"header": "Authorization: Bearer tok",
+		"label":  "State",
+	})
+	got, err := (jsonpath{}).Fetch(context.Background(), cfg)
+	if err != nil {
+		t.Fatal(err)
+	}
+	m := got.(map[string]any)
+	if m["value"] != "degraded" || m["label"] != "State" {
+		t.Fatalf("unexpected payload: %v", m)
+	}
+}
+
+func TestJSONPathFetchValidation(t *testing.T) {
+	for _, cfg := range []string{
+		`{"url":"","path":"a"}`,
+		`{"url":"file:///etc/passwd","path":"a"}`,
+		`{"url":"ftp://x","path":"a"}`,
+	} {
+		if _, err := (jsonpath{}).Fetch(context.Background(), json.RawMessage(cfg)); err == nil {
+			t.Errorf("expected error for %s", cfg)
+		}
+	}
+}

openapi.yaml

@@ -27,10 +27,88 @@ paths:
               schema:
                 $ref: "#/components/schemas/Health"
 
+  /api/boards:
+    get:
+      operationId: listBoards
+      summary: All boards, ordered
+      responses:
+        "200":
+          description: Board list
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: "#/components/schemas/Board"
+    post:
+      operationId: createBoard
+      summary: Create a board — slug derived from the name
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              type: object
+              required: [name]
+              properties:
+                name:
+                  type: string
+      responses:
+        "201":
+          description: Created board
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Board"
+
+  /api/boards/{id}:
+    patch:
+      operationId: updateBoard
+      summary: Rename a board — the slug stays stable
+      parameters:
+        - $ref: "#/components/parameters/id"
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              type: object
+              required: [name]
+              properties:
+                name:
+                  type: string
+      responses:
+        "200":
+          description: Updated board
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Board"
+        "404":
+          $ref: "#/components/responses/NotFound"
+    delete:
+      operationId: deleteBoard
+      summary: Delete a board and its sections — the last board cannot be deleted
+      parameters:
+        - $ref: "#/components/parameters/id"
+      responses:
+        "204":
+          description: Deleted
+        "400":
+          $ref: "#/components/responses/BadRequest"
+        "404":
+          $ref: "#/components/responses/NotFound"
+
   /api/sections:
     get:
       operationId: listSections
-      summary: Full board — sections with nested items and urls, ordered
+      summary: Board tree — sections with nested items and urls, ordered
+      parameters:
+        - name: board
+          in: query
+          description: Restrict to one board id; omitted returns all sections
+          schema:
+            type: string
       responses:
         "200":
           description: Ordered board tree
@@ -540,14 +618,70 @@ paths:
                 additionalProperties:
                   $ref: "#/components/schemas/Status"
 
+  /api/domains/{id}/subdomains:
+    get:
+      operationId: listSubdomains
+      summary: Discovered subdomains for a domain
+      parameters:
+        - $ref: "#/components/parameters/id"
+      responses:
+        "200":
+          description: Subdomain rows, name-sorted
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: "#/components/schemas/Subdomain"
+        "404":
+          $ref: "#/components/responses/NotFound"
+  /api/domains/{id}/subdomains/refresh:
+    post:
+      operationId: refreshSubdomains
+      summary: Force a crt.sh + DNS discovery run, returns the updated list
+      parameters:
+        - $ref: "#/components/parameters/id"
+      responses:
+        "200":
+          description: Subdomain rows after the sweep
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: "#/components/schemas/Subdomain"
+        "404":
+          $ref: "#/components/responses/NotFound"
+
   /api/notify/test:
     post:
       operationId: notifyTest
-      summary: Send a test notification to the configured webhook
-      description: Requires the `notify_webhook` settings key to hold an http(s) URL.
+      summary: Send a test notification through configured transports
+      description: >-
+        Fires a test event synchronously through every configured notify_*
+        transport, or only the transport named in the body. Returns a
+        transport -> "ok" | "error: ..." map.
+      requestBody:
+        content:
+          application/json:
+            schema:
+              type: object
+              properties:
+                transport:
+                  type: string
+                  enum: [webhook, slack, discord, telegram, gotify, ntfy, smtp]
       responses:
         "200":
-          description: Test notification dispatched
+          description: Per-transport delivery results
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  results:
+                    type: object
+                    additionalProperties:
+                      type: string
         "400":
           $ref: "#/components/responses/BadRequest"
 
@@ -1039,6 +1173,83 @@ paths:
         "400":
           $ref: "#/components/responses/BadRequest"
 
+  /api/auth/session:
+    get:
+      operationId: authSession
+      summary: Auth state — enabled flag, whether setup is needed, and current session
+      responses:
+        "200":
+          description: Session state
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/AuthSession"
+
+  /api/auth/setup:
+    post:
+      operationId: authSetup
+      summary: Create the first local admin — only while no users exist
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              type: object
+              required: [username, password]
+              properties:
+                username:
+                  type: string
+                password:
+                  type: string
+                  minLength: 8
+      responses:
+        "201":
+          description: Admin created; session cookie set
+        "400":
+          $ref: "#/components/responses/BadRequest"
+        "409":
+          description: Setup already completed
+
+  /api/auth/login:
+    post:
+      operationId: authLogin
+      summary: Password login — sets a session cookie; rate-limited per IP
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              type: object
+              required: [username, password]
+              properties:
+                username:
+                  type: string
+                password:
+                  type: string
+      responses:
+        "200":
+          description: Signed in
+        "401":
+          description: Invalid credentials
+        "429":
+          description: Too many attempts
+
+  /api/auth/logout:
+    post:
+      operationId: authLogout
+      summary: Destroy the current session
+      responses:
+        "204":
+          description: Signed out
+
+  /api/auth/disable:
+    post:
+      operationId: authDisable
+      summary: Turn authentication off — requires an active session
+      responses:
+        "204":
+          description: Disabled
+
 components:
   securitySchemes:
     bearerAuth:
@@ -1074,6 +1285,19 @@ components:
         status:
           type: string
           example: ok
+    AuthSession:
+      type: object
+      properties:
+        enabled:
+          type: boolean
+        setup:
+          type: boolean
+          description: True when auth is on but no user exists yet
+        authed:
+          type: boolean
+        username:
+          type: string
+
     Error:
       type: object
       required: [error]
@@ -1172,7 +1396,7 @@ components:
             $ref: "#/components/schemas/UrlInput"
     Section:
       type: object
-      required: [id, name, position, collapsed, items]
+      required: [id, name, position, collapsed, boardId, items]
       properties:
         id:
           type: string
@@ -1182,16 +1406,32 @@ components:
           type: number
         collapsed:
           type: boolean
+        boardId:
+          type: string
         items:
           type: array
           items:
             $ref: "#/components/schemas/Item"
+    Board:
+      type: object
+      required: [id, slug, name, position]
+      properties:
+        id:
+          type: string
+        slug:
+          type: string
+        name:
+          type: string
+        position:
+          type: number
     SectionInput:
       type: object
       required: [name]
       properties:
         name:
           type: string
+        boardId:
+          type: string
     SectionPatch:
       type: object
       properties:
@@ -1285,6 +1525,8 @@ components:
             type: string
         notes:
           type: string
+        alerts:
+          $ref: "#/components/schemas/AlertRules"
         position:
           type: number
         lastCheck:
@@ -1294,6 +1536,22 @@ components:
         createdAt:
           type: string
           format: date-time
+    AlertRules:
+      type: object
+      description: Per-target alert rules; omitted fields keep defaults.
+      properties:
+        consecutiveFailures:
+          type: integer
+          description: Checks must fail N times in a row before status flips down
+        latencyWarnMs:
+          type: integer
+          description: Notify once when an up check's ping crosses this threshold
+        certDays:
+          type: integer
+          description: Domain TLS expiry threshold; overrides alertDaysBefore
+        mute:
+          type: boolean
+          description: Suppress notifications; incidents/status still record
     MonitorInput:
       type: object
       properties:
@@ -1338,6 +1596,8 @@ components:
             type: string
         notes:
           type: string
+        alerts:
+          $ref: "#/components/schemas/AlertRules"
     UptimeStats:
       type: object
       properties:
@@ -1519,6 +1779,8 @@ components:
           type: string
           format: date-time
           nullable: true
+        alerts:
+          $ref: "#/components/schemas/AlertRules"
         position:
           type: number
         createdAt:
@@ -1543,6 +1805,8 @@ components:
             type: string
         notes:
           type: string
+        alerts:
+          $ref: "#/components/schemas/AlertRules"
     DomainView:
       allOf:
         - $ref: "#/components/schemas/Domain"
@@ -1558,6 +1822,21 @@ components:
               type: boolean
             sslExpiring:
               type: boolean
+    Subdomain:
+      type: object
+      properties:
+        name:
+          type: string
+        ips:
+          type: array
+          items:
+            type: string
+        firstSeen:
+          type: string
+          format: date-time
+        lastSeen:
+          type: string
+          format: date-time
     DomainCheck:
       type: object
       properties:
@@ -1615,11 +1894,48 @@ components:
           type: array
           items:
             $ref: "#/components/schemas/ContainerStat"
+        smart:
+          type: array
+          items:
+            $ref: "#/components/schemas/SmartDisk"
+        zfs:
+          type: array
+          items:
+            $ref: "#/components/schemas/ZFSPool"
+        gpu:
+          type: array
+          items:
+            $ref: "#/components/schemas/GPUStat"
     ContainerStat:
       type: object
       properties:
         name: { type: string }
         state: { type: string }
+        cpu: { type: number, description: "percent of one core, may exceed 100" }
+        memUsed: { type: number, description: bytes }
+        memLimit: { type: number, description: bytes }
+    SmartDisk:
+      type: object
+      properties:
+        device: { type: string }
+        model: { type: string }
+        passed: { type: boolean, nullable: true }
+        tempC: { type: number }
+    ZFSPool:
+      type: object
+      properties:
+        name: { type: string }
+        health: { type: string }
+        size: { type: number, description: bytes }
+        free: { type: number, description: bytes }
+    GPUStat:
+      type: object
+      properties:
+        name: { type: string }
+        tempC: { type: number }
+        utilPct: { type: number }
+        memUsed: { type: number, description: bytes }
+        memTotal: { type: number, description: bytes }
     System:
       type: object
       required: [id, name, token, status]
@@ -1819,3 +2135,7 @@ components:
           type: array
           items:
             $ref: "#/components/schemas/Section"
+        boards:
+          type: array
+          items:
+            $ref: "#/components/schemas/Board"