docs(planning): C5 empty-states phase complete

Adds the phase-C5 detailed report and appends the C5 status block to
STATE.md so the v1.4.15 marathon log reflects 13 empty-state surfaces
shipped across admin, feature pages, insights and dashboard.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.planning/STATE.md

@@ -724,10 +724,61 @@ first attempt. v1.4.16 should still adopt
 
 ### C5 — Empty-states audit
 
-- [ ] `/admin/users`, `/admin/backups` empty states
-- [ ] Other admin sub-routes
-- [ ] Dashboard empty state for very-new users
+- [x] `/admin/users`, `/admin/backups` empty states (`0c20119`)
+- [x] Other admin sub-routes — login-overview, api-tokens, feedback,
+      overview audit-preview (`0c20119`)
+- [x] Dashboard empty state for very-new users (`65faf1d`)
 - Detailed report: `.planning/phase-C5-report.md`
+- Audit deep-dive: `docs/audit/v1415-empty-states.md`
+
+#### C5 status block — 2026-05-09T21:55+02:00 — done
+
+13 empty-state surfaces upgraded: 6 admin (users, backups,
+login-overview, api-tokens, feedback, overview audit-preview), 4
+feature lists (measurements, mood, medications, achievements), 2
+insights (top-level no-data, BMI height-not-set), 1 dashboard
+(fully-empty tile + chart row). Every surface now mounts the shared
+`<EmptyState>` primitive with icon + localized title + description +
+CTA-where-appropriate so brand-new accounts always have a one-click
+path forward.
+
+5 commits on `origin/main`:
+
+- `5510ed5` `docs(audit): v1.4.15 empty-states audit + i18n keys` —
+  audit document + 18 new EN+DE keys under `measurements/mood/
+  medications/admin.section.users/admin.section.backups/admin.
+  {loginEmpty,tokensEmpty}/admin.feedback/insights/dashboard`. Race
+  swept in 3 sibling C1 AI files; files correct on `main`, message
+  scope wider than intent.
+- `0c20119` `feat(admin): empty states for users, backups, login-
+  overview, api-tokens, feedback` — clean diff, includes 2 unit
+  tests (`user-management-empty`, `backups-section-empty`).
+- `9a74f8e` + `1d65f3b` — measurements/mood/medications/achievements
+  upgrade. Race split the diff across two commits (tied together by
+  follow-up message); the `(impl)` commit carries the actual
+  component changes after the first commit's pathspec dropped them.
+- `65faf1d` `feat(insights,dashboard): empty states for first-run
+  views` — `/insights` top + BMI height-not-set + dashboard
+  fully-empty paths.
+
+Tests: 1028 / 1028 unit pass (was 1005 pre-C5; +23 from C5 + indirect
+i18n key resolution coverage). Typecheck: only pre-existing A4
+`dashboard-layout.test.ts` errors. Lint: 0 errors, 11 pre-existing
+warnings (none in C5 files).
+
+i18n: 18 new EN+DE keys, additive only. C4 sweep can fold these into
+the parity guard without refactoring.
+
+Cross-agent: shared-cwd staging race reproduced twice (commits
+`5510ed5` and `9a74f8e`). Documented in
+`docs/audit/v1415-empty-states.md` and matches the v1.4.15 marathon
+pattern flagged by every prior phase. v1.4.16 should adopt
+`superpowers:using-git-worktrees` per agent.
+
+NOT touched (per scope): `src/lib/ai/*`, withings / moodlog /
+notifications, messages mass refactor, correlation-card inline empty
+surfaces inside /insights (already use a tighter custom variant —
+refactor would be churn-only, deferred to v1.4.16).
 
 ## Phase D — Multi-agent QA (parallel, write-only)
 

.planning/phase-C5-report.md

@@ -0,0 +1,123 @@
+# Phase C5 — Empty-states audit + fixes
+
+Status: done — 2026-05-09T21:55+02:00
+
+Audit document: [`docs/audit/v1415-empty-states.md`](../docs/audit/v1415-empty-states.md)
+
+## Summary
+
+13 empty-state surfaces upgraded across the app. Every list / table /
+tile a brand-new user can land on now mounts the shared
+`<EmptyState>` primitive (`src/components/ui/empty-state.tsx`) with an
+icon, localized title + description, and (where it makes sense) a
+primary CTA so the user always has a one-click path forward.
+
+The primitive itself was already on `main` from earlier in v1.4.15 —
+only the sweep was needed. No new dependencies, no schema changes, no
+API changes.
+
+## Counts per area
+
+- **Admin (6)**: `/admin/users`, `/admin/backups`,
+  `/admin/login-overview`, `/admin/api-tokens`, `/admin/feedback`,
+  `/admin` overview audit-preview.
+- **Feature lists (4)**: `/measurements`, `/mood`, `/medications`,
+  `/achievements`.
+- **Insights (2)**: top-level no-data state, BMI section
+  height-not-set fallback.
+- **Dashboard (1)**: tile-strip + chart-row both empty.
+
+## Commits (origin/main)
+
+- `5510ed5` `docs(audit): v1.4.15 empty-states audit + i18n keys` —
+  audit document at `docs/audit/v1415-empty-states.md`; 18 new EN+DE
+  keys under `measurements/mood/medications/admin.section.users/
+  admin.section.backups/admin.{loginEmpty,tokensEmpty}/admin.feedback/
+  insights/dashboard`. Sibling-agent C1 AI files swept in by the
+  shared-cwd race (per STATE.md pattern); files correct on `main`,
+  message scope misleading.
+- `0c20119` `feat(admin): empty states for users, backups,
+  login-overview, api-tokens, feedback` — 6 admin sub-routes upgraded.
+  Adds `user-management-empty.test.tsx` + `backups-section-empty.test.tsx`
+  guarding primitive mount, localized strings, and CTA-presence
+  semantics.
+- `9a74f8e` `feat(lists): empty states for measurements, mood,
+  medications, achievements` — only carried the new
+  `measurement-list-empty.test.tsx` due to a sibling-cwd staging race;
+  message-scope wider than diff.
+- `1d65f3b` `feat(lists): empty states for measurements, mood,
+  medications, achievements (impl)` — follow-up that lands the actual
+  EmptyState wiring described in the previous commit's message.
+- `65faf1d` `feat(insights,dashboard): empty states for first-run
+  views` — `/insights` top-level + BMI height-not-set + dashboard
+  fully-empty paths.
+
+## Tests
+
+- Unit: 1028 / 1028 passing (was 1005 before C5; +23 across the new
+  empty-state tests + indirect i18n key resolution checks).
+- Typecheck: pre-existing A4 `dashboard-layout.test.ts` errors only —
+  no new errors introduced.
+- Lint: 0 errors, 11 warnings (all pre-existing, none in C5 files).
+
+## i18n footprint
+
+18 new keys, EN + DE pairs, additive only. No deletions, no key
+renames. C4 sweep can fold these into the parity guard without
+refactoring.
+
+## Cross-agent observations
+
+The shared-cwd / shared-index commit race observed throughout the
+v1.4.15 marathon (A2 / A4 / B-mobile / B1 / B2 / B3 / B4 / B5 / B6 /
+C2) reproduced twice during this phase:
+
+1. Commit `5510ed5` (intended: audit + i18n) inadvertently swept three
+   sibling-agent (C1) AI files (`src/lib/ai/generate-insight.ts`,
+   `schema.ts`, `__tests__/generate-insight.test.ts`) because they were
+   untracked at commit time. The audit doc + i18n keys are correct;
+   the AI files belong to C1 and are now on `main` under my message.
+2. Commit `9a74f8e` was supposed to carry the four feature-list impl
+   files plus the new test, but only the new test got staged — six
+   modified files reverted from the index between `git add` and `git
+   commit`. The follow-up commit `1d65f3b` lands the impl with an
+   explicit message tying the two together.
+
+Both patterns match STATE.md's documented "v1.4.16 should adopt
+`superpowers:using-git-worktrees` per agent" recommendation. None of
+the diffs on `main` are wrong — only the commit-message-to-diff
+mapping drifts. C1's files are on `main` ahead of their commit; C5's
+impl is split across two commits with a tying-back message.
+
+## Verification commands run after each commit
+
+```
+pnpm test --run                          # 1028/1028 pass
+pnpm typecheck                           # only pre-existing errors
+pnpm lint                                # 0 errors
+```
+
+## What's intentionally NOT touched
+
+- `src/lib/ai/`, `src/app/api/insights/generate/route.ts`,
+  `src/lib/ai/prompts/` — owned by C1.
+- `src/lib/withings/`, `src/lib/moodlog/`, `src/lib/notifications/` —
+  owned by B2/B3 (already done).
+- `messages/*.json` mass refactor — only additive new keys per scope.
+  C4 will sweep for parity later.
+- Inline correlation-card empty surfaces inside `/insights` (the
+  `scatterData.length < 5` paths) — already use a tighter custom
+  variant; refactor would be churn-only. Documented as deferred in
+  the audit doc.
+
+## Next phase touchpoints
+
+- Phase D code-reviewer can validate the EmptyState adoption pattern
+  is consistent (icon + title + description + CTA-where-appropriate).
+- Phase D design review can verify the dashboard "fully empty" surface
+  doesn't conflict with the GettingStartedChecklist's own self-gated
+  rendering — both should not paint at the same time, but they live
+  in different render branches.
+- Phase E release notes: "Brand-new accounts now see helpful empty
+  states across every list, table, and tile instead of blank
+  rectangles."