docs(08-01): complete isActive column and DAO filtering plan

- Create 08-01-SUMMARY.md with execution results and deviation docs
- Update STATE.md: progress 50%, decisions recorded, session updated
- Update ROADMAP.md: phase 8 marked In Progress (1/2 plans complete)
- Mark requirements DEL-02 and DEL-03 complete in REQUIREMENTS.md

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

.planning/ROADMAP.md

@@ -43,7 +43,7 @@ See `milestones/v1.1-ROADMAP.md` for full phase details.
 **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
-**Plans:** 2 plans
+**Plans:** 1/2 plans executed
 Plans:
 - [ ] 08-01-PLAN.md — Data layer: isActive column, schema migration, DAO filters and methods
 - [ ] 08-02-PLAN.md — UI layer: delete button, confirmation dialog, smart delete provider
@@ -86,6 +86,6 @@ Plans:
 | 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 | 0/2 | In Progress | - |
+| 8. Task Delete | 1/2 | In Progress|  | - |
 | 9. Task Creation UX | v1.2 | - | Planned | - |
 | 10. Dead Code Cleanup | v1.2 | - | Planned | - |