feat: activity feed — enriched audit events + global/project timelines (#45)

* feat(branding): white-label — public /branding, admin write, shell theming

app_settings branding.* keys (product name, logo/favicon URLs, accent
color, docs/support links). Public GET /branding so login and shell
theme pre-auth; admin writes via PUT /settings.

useBranding() applies document.title, accent CSS var and favicon;
BrandWordmark replaces hardcoded wordmarks; admin Platform settings
gain a Branding form. MCP containr_branding_get + settings_update.

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

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

* feat(invites): team invite links — admin create/revoke, public accept

Admins mint single-use invite links (sha256-hashed token at rest,
optional email binding, configurable TTL). Public endpoints let the
accept page validate the link and register — working even while
public signup is disabled.

- migration + sqlc queries/model for user_invites
- POST /admin/invites (returns one-time token+url), GET list, DELETE revoke
- GET /auth/invites/:token public validation, POST /auth/accept-invite
- CLI containr invites list|create|revoke; MCP invites tools
- /auth/accept-invite page (expired/used/invalid states, bound-email lock)
- Admin page Team invites section: create, copy link, revoke
- OpenAPI + generated types + CLI guide

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

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

* feat(admin): impersonate user — 15-min token, audit-logged

POST /admin/users/:id/impersonate mints a short-lived bearer token
(impersonated_by claim) for support/debugging. Admin accounts cannot
be impersonated; every mint is audit-logged with actor + target.

- CLI: containr admin impersonate <user-id> (works via CONTAINR_TOKEN)
- MCP: containr_admin_impersonate
- Admin UI: per-user Impersonate action → token modal with usage hint
- OpenAPI + generated types

Verified live: token resolves to target, admin target 403, audit row.

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

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

* feat(git): GitHub App manifest self-provisioning + app-level webhook

Admins create the instance GitHub App in-browser instead of hand-
setting GITHUB_APP_* env vars:

- POST /admin/git/github-app/manifest builds the manifest + URL;
  the frontend auto-submits it to github.com
- /git/github-app/callback page exchanges the code via
  POST /admin/git/github-app/convert; credentials persist in
  app_settings (precedence over env)
- GET /admin/git/github-app reports configured/source
- POST /api/git/github-app/webhook — single app-level push receiver,
  HMAC-verified, dispatches via extracted dispatchPushToServices
- install-url + installation-token paths resolve settings→env
- CLI: containr admin github-app status|manifest|convert; MCP tools
- Git providers UI shows "Set up GitHub App" for admins when
  unconfigured

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

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

* feat: activity feed — enriched audit events, global + per-project timelines

audit_logs gains severity/category/label columns derived from
resource+action at write time; legacy rows are classified on read and
backfilled at boot in batches.

- GET /activity: global feed scoped to the caller's visible projects
  (admins see all); severity/category/resource/project_id/since
  filters, page+limit
- GET /projects/:id/activity: timeline correlated to the project's
  services, deployments, databases and the project record; access
  mirrors project read rules
- Retention worker prunes rows older than AUDIT_RETENTION_DAYS
  (default 90, 0 disables), running once at boot then daily
- project.create/delete now audited so timelines aren't empty
- CLI `containr activity` with filter flags; MCP tools
  containr_activity_list + containr_project_activity
- Frontend: /activity page (severity chips, icon per category) under
  Operate nav; project workspace gains an Activity view tab
- OpenAPI + generated types + CLI docs

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

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

---------

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

ROADMAP2.md

@@ -89,7 +89,7 @@ Legend: ✅ done · 🟡 partial/different · ❌ missing · ➖ not applicable
 | Outbound webhooks (collection events, HMAC, custom headers) | ✅ `outbound_webhooks` + `webhook_deliveries`, HMAC `X-Containr-Signature`, wildcard events, 3-retry, UI page | — |
 | Banners (global + per-tenant, dismissible) | ❌ | `banners` table + top bar |
 | White-label (logo/favicon/title/OG/theme colors) | ❌ | `app_settings.branding` — **Containr remains the default brand** |
-| Activity feed (icon/severity/category/metadata, 90-day TTL job) | 🟡 `audit_logs` coarser | Enrich + project feed UI |
+| Activity feed (icon/severity/category/metadata, 90-day TTL job) | ✅ `/activity` + project view | — |
 | Admin metrics dashboard (users/servers/queued/failed counts) | 🟡 `/admin` exists | Extend |
 | **Impersonate user** | ❌ | Admin support tool |
 | In-app docs (content-collections markdown) | ✅ `/docs` | — |
@@ -282,8 +282,14 @@ and wired refs, one click or one CLI call.
   headers, enabled)` + `webhook_deliveries` log; HMAC
   `X-Containr-Signature`; wildcard events on every audited action;
   CLI + MCP + `/settings/webhooks` page with delivery log + test ping.
-- [ ] **Activity feed** — enrich `audit_logs` with `severity category
-  icon label metadata`; per-project timeline + global feed; TTL job.
+- [x] **Activity feed** — `audit_logs` enriched with `severity`
+  (`info|success|warning|error`), `category`, human `label`; derived at
+  write time, classified on read for legacy rows, boot-time backfill.
+  `GET /activity` (global, visibility-scoped, filters + `since`) and
+  `GET /projects/:id/activity` (owner/member/approved/admin). Frontend:
+  `/activity` page with severity chips + project workspace `Activity`
+  view. `containr activity` + `containr_activity_list`/`containr_project_activity`
+  MCP tools. Retention worker prunes > `AUDIT_RETENTION_DAYS` (default 90).
 - [x] **Banners** — `banners` table with title/body/level/active/
   dismissible/schedule window. `GET /banners/active` for signed-in
   users; admin CRUD at `/admin/banners`. `BannerBar` renders above the