docs: complete Phase 9 backlog triage (issues map, briefs, ADRs)

Map design IDs to Gitea #1-#37, add tasks 80-88, stub ADRs 0004-0006,
and point STATUS at the P1 batch order.

docs/tasks/83-bang-edit-delete.md

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+# 83 — Bang edit and delete
+
+## Goal
+
+Allow editing and deleting bang entries after creation (e.g. wrong date).
+
+## Why
+
+Bangs can be recorded but not corrected. Only create exists today.
+
+## Depends on
+
+- Bangs module (in tree; no prior task number)
+
+## Scope
+
+- Server actions for update and delete.
+- UI on the bang widget (and any list surface) for edit/delete.
+- Activity log for update/delete if other modules log similarly.
+- Playwright: new `tests/e2e/bangs.spec.ts` — record → edit date → assert → delete → assert gone.
+
+## Out of scope
+
+- Bang stats widget (design #11 / Gitea #31) — separate P2 issue.
+
+## Acceptance criteria
+
+- [ ] Edit a bang (e.g. change date) and see the update.
+- [ ] Delete a bang and it no longer appears.
+- [ ] E2E covers edit and delete.
+
+## Notes
+
+- Gitea: [ginnoir/famapp#4](https://gitea.ginnoir.com/ginnoir/famapp/issues/4)
+- Related (not blocking): #31 bang stats widget.