roadmap(06): add Phase 6 — UX Polish

phase.add appended the entry after the 999.x backlog (the decimal backlog
convention confused the auto-placement). Moved it into Phase Details before
## Progress, added it to the top checklist + Progress table + execution order,
gave it goal/success-criteria/candidate-scope (promotes backlog 999.2/3/6/7/8/9),
renamed the dir to 06-ux-polish, and bumped STATE to 6 phases (50%).

.planning/ROADMAP.md

@@ -18,6 +18,7 @@ Decimal phases appear between their surrounding integers in numeric order.
 - [x] **Phase 3: Event Write-Back + PWA Install** - Full event CRUD written back to Fastmail, PWA manifest + service worker, guided iOS install flow (completed 2026-06-07)
 - [ ] **Phase 4: Shared Lists + Live Sync** - Named collaborative lists with item CRUD and real-time SSE co-edit sync
 - [ ] **Phase 5: Web Push Notifications** - VAPID push for event reminders, event changes, and list-change alerts
+- [ ] **Phase 6: UX Polish** - All-day visual distinction, event-form date/recurrence behavior, recurring-series edit, and auth-flow smoothing
 
 ## Phase Details
 
@@ -158,10 +159,29 @@ Plans:
 
 **Plans**: TBD
 
+### Phase 6: UX Polish
+
+**Goal**: Smooth the rough edges surfaced during live use — clearer all-day events, saner event-form date/recurrence behavior, recurring-series editing, and auth-flow polish — so the app feels slick for the non-technical Apple member (hard UX constraint).
+**Mode:** mvp
+**Depends on**: Phase 3 (calendar/event-form polish); Phase 4 for any list-related polish
+**Requirements**: TBD
+**Success Criteria** (what must be TRUE):
+
+  1. All-day events are visually distinct from timed events at a glance
+  2. The event form keeps a sane duration when the start moves, all-day edits don't grow the event, and a recurrence can be bounded (repeat-until / count)
+  3. A recurring series can be edited as a whole
+  4. A session that expires mid-use redirects cleanly to sign-in instead of hanging on a generic error
+  5. Unauthenticated cold load shows a neutral "signing you in…" splash — no calendar/"sign-in required" flash before Authelia
+
+**Candidate scope** (promote via `/gsd-review-backlog` at planning): 999.2 (login flash), 999.3 (session-timeout redirect), 999.6 (all-day visual), 999.7 (form end-tracking + all-day-edit off-by-one), 999.8 (recurrence bound), 999.9 (recurring-series edit). 999.4 (reminders) and 999.5 (provider setup) are more feature than polish — decide at planning.
+
+**Plans**: TBD
+**UI hint**: yes
+
 ## Progress
 
 **Execution Order:**
-Phases execute in numeric order: 1 → 2 → 3 → 4 → 5
+Phases execute in numeric order: 1 → 2 → 3 → 4 → 5 → 6
 Note: Phase 4 depends only on Phase 1 and can begin as soon as Phase 1 is complete. It is serialized here to reduce work-in-progress.
 
 | Phase | Plans Complete | Status | Completed |
@@ -171,6 +191,7 @@ Note: Phase 4 depends only on Phase 1 and can begin as soon as Phase 1 is comple
 | 3. Event Write-Back + PWA Install | 12/12 | Complete    | 2026-06-07 |
 | 4. Shared Lists + Live Sync | 0/? | Not started | - |
 | 5. Web Push Notifications | 0/? | Not started | - |
+| 6. UX Polish | 0/? | Not started | - |
 
 ## Backlog
 
@@ -299,3 +320,4 @@ Plans:
 Plans:
 
 - [ ] TBD (promote with /gsd-review-backlog when ready)
+