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/82-garden-plant-count.md

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+# 82 — Garden container plant count
+
+## Goal
+
+Fix container plant counts so a container with N plants displays N, and audit sibling counts for the same bug.
+
+## Why
+
+Containers (e.g. "plantie cabinet") show "0 plants" despite containing plants — likely a query/join or association bug.
+
+## Depends on
+
+- 71 (garden containers), 72 (garden plants)
+
+## Scope
+
+- Find and fix the count query in `src/modules/garden/server/queries.ts` (and related UI).
+- Audit other garden counts (lists, widgets) for the same pattern; fix or file follow-ups.
+- Playwright: extend `tests/e2e/garden.spec.ts` — plant in container → count ≥ 1.
+
+## Out of scope
+
+- New garden features.
+
+## Acceptance criteria
+
+- [ ] Container with N plants displays N (not 0).
+- [ ] Sibling counts audited; fixed or follow-ups filed.
+- [ ] E2E covers plant-in-container count.
+
+## Notes
+
+- Gitea: [ginnoir/famapp#3](https://gitea.ginnoir.com/ginnoir/famapp/issues/3)