feat(settings): reorganize page into grouped sections with sticky nav (ROADMAP #13)

[coccyx]

Summary

ROADMAP item #13. Pure UX rearrangement — no new features, no schema or query changes.

The Settings page had grown to 8 sections in chronological-by-landing order rather than mental-model order. Setup actions were buried at the bottom; first-time installers had to scroll past 5 tuning sections to find provisioning. No section nav, no setup-status summary. Trace originators (a read-only audit table) was mixed with config-action sections. Noise filters and Error filtering were separated by Dataset even though they're the same kind of "shape what counts as an error" tuning.

What's now in place

• Setup status card at the top — two checkmark rows (Scheduled searches, Dataset acceleration) showing live provisioning state. Green-left-border when both OK; otherwise shows what's missing with a "Jump to X" anchor button. Reuses the same planOnly + getDatasetStatus checks the global ProvisioningBanners use.
• Two-column layout: sticky left-rail section nav with IntersectionObserver-driven active-link highlight; content cards on the right. Collapses to single column below 960px.
• Sections grouped by purpose with group headings:
  • Setup — Provisioning, Dataset acceleration (TOP).
  • Workspace — Dataset, Detection cadence, Notification targets.
  • Filtering & heuristics — Noise filters, Error filtering.
  • Diagnostics — Trace originators (collapsed by default).
• Setup panels moved from the bottom to the top. The duplicate at the bottom is removed.
• Trace originators collapsed by default — operators rarely look at the classification audit; the section title is now a toggle.

Screenshot

Test plan

• npx tsc --noEmit — clean
• npm run lint — 0 errors
• npm test — 107/107 passing
• npm run build — succeeds
• npm run deploy — packed + uploaded + provisioned on staging
• Playwright capture: setup status renders with both green checks; nav highlights the in-view section; sticky scroll behavior intact

Validate on staging

1. Open Settings — confirm Setup status card with two green checkmarks at the top
2. Confirm sticky left nav with four groups
3. Click a nav link — page anchors-scrolls to that section
4. Scroll content — nav highlight follows
5. Diagnostics → click Trace originators title — expands the table

Session log

docs/sessions/2026-05-29-settings-cleanup.md

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