docs(quick-260618-smr): remove unused Redis service and references

.planning/STATE.md

@@ -256,6 +256,7 @@ Recent decisions affecting current work:
 | 260613-dmw | Exclude `.gitea/**` from the CI `changes` `code` paths-filter so workflow-only PRs skip the heavy api/harness jobs (treated like docs) while fast-checks + gate still run. Single `- '!.gitea/**'` negation appended after the yml/yaml globs (index 11 vs 5). Rides along on the Phase 16 branch / PR #15. | 2026-06-13 | 2d329a9 |  | [260613-dmw-exclude-gitea-workflow-config-changes-fr](./quick/260613-dmw-exclude-gitea-workflow-config-changes-fr/) |
 | 260613-fp9 | `.gitea`/`.planning`-only pushes to main no longer trigger the Docker publish — added `paths-ignore: ['.gitea/**', '.planning/**']` under `on.push` in `.gitea/workflows/publish.yml` (skips only when EVERY changed file matches; mixed code+docs pushes still publish). `.dockerignore` already excludes `.planning` so the image is byte-identical. Done in isolated worktree (phase-10 agent held main tree). | 2026-06-13 | cd5a88c | | [260613-fp9-gitea-and-planning-pushes-should-not-tri](./quick/260613-fp9-gitea-and-planning-pushes-should-not-tri/) |
 | 260613-ndv | Isolate local apps/api integration tests to a dedicated `familysync_test` DB so test runs stop polluting the dev `familysync` DB. New CI-gated vitest globalSetup root-provisions (CREATE DATABASE + GRANT) + migrates + truncate-resets `familysync_test` each run; `vitest.config.ts` forces `DB_NAME=familysync_test` for local workers (no-op under CI, so CI's `familysync` service DB + db:migrate are untouched). Verified: dev `familysync` users stays 3 across a run, `familysync_test` resets (186→93, not doubled), 244/244 tests pass (flaky list_shares timeout gone), typecheck 0. Branch off main. | 2026-06-13 | 07d5161 | Verified | [260613-ndv-wire-apps-api-integration-tests-to-a-ded](./quick/260613-ndv-wire-apps-api-integration-tests-to-a-ded/) |
+| 260618-smr | Remove unused Redis service and all references — Redis confirmed unused at runtime (no ioredis/redis client import, no `REDIS_*` env, not a dependency in any package.json). Dropped the `redis` service from both compose files and cleaned all references in CLAUDE.md, README.md, and docs/* + e2e config. Kept the in-memory-vs-Redis design-rationale comments (D-12/D-18) in listEmitter/reminderScheduler/linkNonceStore/localAuth. `docker compose config` parses clean (0 redis); `format:check` green. Branch off main. | 2026-06-18 | 0b42666 | Verified | [260618-smr-remove-unused-redis-service-and-referenc](./quick/260618-smr-remove-unused-redis-service-and-referenc/) |
 
 ## Deferred Items