API additions (dev-api.py):
- GET /api/tasks — list active background tasks
- DELETE /api/tasks/{task_id} — per-task cancel
- POST /api/tasks/kill — kill all stuck tasks
- POST /api/tasks/discovery|email-sync|enrich|score|sync — queue/trigger each workflow
- POST /api/jobs/archive — archive by statuses array
- POST /api/jobs/purge — hard delete by statuses or target (email/non_remote/rescrape)
- POST /api/jobs/add — queue URL imports
- POST /api/jobs/upload-csv — upload CSV with URL column
- GET /api/config/setup-banners — list undismissed onboarding hints
- POST /api/config/setup-banners/{key}/dismiss — dismiss a banner
HomeView.vue:
- 4th WorkflowButton: "Fill Missing Descriptions" (always visible, not gated on enrichment_enabled)
- Danger Zone redesign: scope radio (pending-only vs pending+approved), Archive & reset (primary)
vs Hard purge (secondary), inline confirm dialogs, active task list with per-task cancel,
Kill all stuck button, More Options (email purge / non-remote / wipe+rescrape)
- Setup banners: dismissible onboarding hints pulled from /api/config/setup-banners,
5-second polling for active task list to stay live
app/Home.py:
- Danger Zone redesign: same scope radio + archive/purge with confirm steps
- Background task list with per-task cancel and Kill all stuck button
- More options expander (email purge, non-remote, wipe+rescrape)
- Setup banners section at page bottom
