docs(05-calendar-strip): create phase plan

.planning/ROADMAP.md

@@ -37,7 +37,10 @@ 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**: TBD
+**Plans:** 2 plans
+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
 
 ### Phase 6: Task History
 **Goal**: Users can see exactly when each task was completed in the past, building trust that the scheduling loop is working correctly
@@ -68,6 +71,6 @@ See `milestones/v1.0-ROADMAP.md` for full phase details.
 | 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/? | Not started | - |
+| 5. Calendar Strip | v1.1 | 0/2 | Planned | - |
 | 6. Task History | v1.1 | 0/? | Not started | - |
 | 7. Task Sorting | v1.1 | 0/? | Not started | - |