docs(05-01): complete calendar data layer plan — CalendarDao, providers, l10n

- 05-01-SUMMARY.md: execution results with deviations, decisions, self-check
- STATE.md: current position updated to Plan 01 complete, 3 new decisions
- ROADMAP.md: Phase 5 in progress (1/2 plans complete)
- REQUIREMENTS.md: CAL-02 and CAL-05 marked complete

.planning/ROADMAP.md

@@ -37,7 +37,7 @@ See `milestones/v1.0-ROADMAP.md` for full phase details.
   3. On app launch the strip auto-scrolls so today's card is centered and selected by default
   4. When two adjacent day cards span a month boundary, a subtle color shift or divider makes the boundary visible without extra chrome
   5. Tasks that were not completed on their due date appear in subsequent days' lists with a red/orange accent marking them as overdue
-**Plans:** 2 plans
+**Plans:** 1/2 plans executed
 Plans:
 - [ ] 05-01-PLAN.md — Data layer: CalendarDao, CalendarDayState model, Riverpod providers, localization, DAO tests
 - [ ] 05-02-PLAN.md — UI: CalendarStrip, CalendarDayList, CalendarTaskRow widgets, HomeScreen replacement
@@ -71,6 +71,6 @@ Plans:
 | 2. Rooms and Tasks | v1.0 | 5/5 | Complete | 2026-03-15 |
 | 3. Daily Plan and Cleanliness | v1.0 | 3/3 | Complete | 2026-03-16 |
 | 4. Notifications | v1.0 | 3/3 | Complete | 2026-03-16 |
-| 5. Calendar Strip | v1.1 | 0/2 | Planned | - |
+| 5. Calendar Strip | 1/2 | In Progress|  | - |
 | 6. Task History | v1.1 | 0/? | Not started | - |
 | 7. Task Sorting | v1.1 | 0/? | Not started | - |