docs(05-03): complete act()-warning elimination plan

- SUMMARY.md: userEvent v14 migration + vi.useFakeTimers() for ReviewStep
- STATE.md: advanced to completed 05-03, added patterns as decisions
- ROADMAP.md: phase 5 now 4/4 plans complete (Complete status)
- REQUIREMENTS.md: TECH-05 marked complete

.planning/ROADMAP.md

@@ -23,7 +23,7 @@ Full phase details: [.planning/milestones/v1.0-ROADMAP.md](milestones/v1.0-ROADM
 
 **Milestone Goal:** Ship all deferred tech debt and backlog features from v1.0 — scriptTargets filtering, UX consistency fixes, registry-driven backend list, 4 new backends, field validation, and contextual tooltips.
 
-- [ ] **Phase 5: Tech Debt** - Fix all deferred v1.0 issues (scriptTargets filtering, Back button, registry-driven UI, dead export, test warnings)
+- [x] **Phase 5: Tech Debt** - Fix all deferred v1.0 issues (scriptTargets filtering, Back button, registry-driven UI, dead export, test warnings) (completed 2026-03-30)
 - [ ] **Phase 6: New Backends** - Add OneDrive, SFTP, Google Cloud Storage, and Backblaze B2 to the backend registry and wizard
 - [ ] **Phase 7: Validation & UX Polish** - Add field-level format validation and contextual tooltips across all backends
 
@@ -78,6 +78,6 @@ Plans:
 | 2. Generators | v1.0 | 4/4 | Complete | 2026-03-26 |
 | 3. Wizard UI | v1.0 | 5/5 | Complete | 2026-03-27 |
 | 4. Review, Download & Security | v1.0 | 5/5 | Complete | 2026-03-27 |
-| 5. Tech Debt | 3/4 | In Progress|  | - |
+| 5. Tech Debt | 4/4 | Complete   | 2026-03-30 | - |
 | 6. New Backends | v1.1 | 0/TBD | Not started | - |
 | 7. Validation & UX Polish | v1.1 | 0/TBD | Not started | - |