docs: start milestone v1.2 Polish & Task Management

Define requirements (9 total: task delete, creation UX, cleanup),
create roadmap (phases 8-10), and update PROJECT.md with new
milestone goals. Room cover photos dropped from scope.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.planning/ROADMAP.md

@@ -4,6 +4,7 @@
 
 - ✅ **v1.0 MVP** — Phases 1-4 (shipped 2026-03-16)
 - ✅ **v1.1 Calendar & Polish** — Phases 5-7 (shipped 2026-03-16)
+- **v1.2 Polish & Task Management** — Phases 8-10 (in progress)
 
 ## Phases
 
@@ -30,6 +31,46 @@ See `milestones/v1.1-ROADMAP.md` for full phase details.
 
 </details>
 
+**v1.2 Polish & Task Management (Phases 8-10):**
+
+- [ ] **Phase 8: Task Delete** - Add smart delete action to tasks — hard delete if never completed, soft delete (deactivate) if completed at least once
+- [ ] **Phase 9: Task Creation UX** - Rework the frequency picker from flat preset chips to an intuitive "Every N units" interface with quick-select shortcuts
+- [ ] **Phase 10: Dead Code Cleanup** - Remove orphaned v1.0 daily plan files and verify no regressions
+
+## Phase Details
+
+### Phase 8: Task Delete
+**Goal**: Users can remove tasks they no longer need, with smart preservation of completion history for future statistics
+**Depends on**: Phase 7 (v1.1 shipped — calendar, history, and sorting all in place)
+**Requirements**: DEL-01, DEL-02, DEL-03, DEL-04
+**Success Criteria** (what must be TRUE):
+  1. The task edit form has a clearly visible delete action (button or icon)
+  2. Deleting a task with zero completions removes it from the database entirely
+  3. Deleting a task with one or more completions sets it to inactive/archived — the task disappears from all active views (calendar, room task lists) but its completion records remain in the database
+  4. A confirmation dialog appears before any delete/archive action
+  5. The tasks table has an `isActive` (or equivalent) column, with all existing tasks defaulting to active via migration
+
+### Phase 9: Task Creation UX
+**Goal**: Users can set any recurring frequency intuitively without hunting through a grid of preset chips — common frequencies are one tap away, custom intervals are freeform
+**Depends on**: Phase 8
+**Requirements**: TCX-01, TCX-02, TCX-03, TCX-04
+**Success Criteria** (what must be TRUE):
+  1. The frequency section presents a primary "Every [N] [unit]" picker where users can type a number and select days/weeks/months
+  2. Common frequencies (daily, weekly, biweekly, monthly) are available as quick-select shortcuts that populate the picker
+  3. Any arbitrary interval is settable without a separate "Custom" mode — the picker is inherently freeform
+  4. All existing interval types and calendar-anchored scheduling behavior continue to work correctly (monthly/quarterly/yearly anchor memory)
+  5. Existing tasks load their current interval into the new picker correctly in edit mode
+
+### Phase 10: Dead Code Cleanup
+**Goal**: Remove orphaned v1.0 daily plan files that are no longer used after the calendar strip replacement, keeping the codebase clean
+**Depends on**: Phase 8 (cleanup after feature work is done)
+**Requirements**: CLN-01
+**Success Criteria** (what must be TRUE):
+  1. daily_plan_providers.dart, daily_plan_task_row.dart, and progress_card.dart are deleted
+  2. DailyPlanDao is preserved (still used by notification service)
+  3. All 108+ tests pass after cleanup
+  4. `dart analyze` reports zero issues
+
 ## Progress
 
 | Phase | Milestone | Plans Complete | Status | Completed |
@@ -41,3 +82,6 @@ See `milestones/v1.1-ROADMAP.md` for full phase details.
 | 5. Calendar Strip | v1.1 | 2/2 | Complete | 2026-03-16 |
 | 6. Task History | v1.1 | 1/1 | Complete | 2026-03-16 |
 | 7. Task Sorting | v1.1 | 2/2 | Complete | 2026-03-16 |
+| 8. Task Delete | v1.2 | - | Planned | - |
+| 9. Task Creation UX | v1.2 | - | Planned | - |
+| 10. Dead Code Cleanup | v1.2 | - | Planned | - |