docs(08-02): complete mobile chat plan — SUMMARY, STATE, ROADMAP updated

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

.planning/STATE.md

@@ -3,14 +3,14 @@ gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
 status: completed
-stopped_at: Phase 8 context gathered
-last_updated: "2026-03-26T02:08:35.108Z"
+stopped_at: Completed 08-mobile-pwa/08-02-PLAN.md
+last_updated: "2026-03-26T03:19:05.675Z"
 last_activity: 2026-03-23 — Completed 03-02 onboarding wizard, Slack OAuth, BYO API keys
 progress:
   total_phases: 8
   completed_phases: 7
-  total_plans: 29
-  completed_plans: 29
+  total_plans: 33
+  completed_plans: 30
   percent: 100
 ---
 
@@ -81,6 +81,7 @@ Progress: [██████████] 100%
 | Phase 07-multilanguage P02 | 9min | 2 tasks | 14 files |
 | Phase 07-multilanguage P03 | 45min | 2 tasks | 48 files |
 | Phase 07-multilanguage P04 | verification | 1 tasks | 0 files |
+| Phase 08-mobile-pwa P02 | 6m 15s | 1 tasks | 12 files |
 
 ## Accumulated Context
 
@@ -181,6 +182,9 @@ Recent decisions affecting current work:
 - [Phase 07-multilanguage]: LanguageSwitcher isPreAuth prop skips DB PATCH and session.update() on login page
 - [Phase 07-multilanguage]: onboarding/page.tsx uses getTranslations() not useTranslations() — Server Component requires next-intl/server import
 - [Phase 07-multilanguage]: billing-status.tsx trialEnds key uses only {date} param — boolean ICU params rejected by TypeScript strict mode
+- [Phase 08-mobile-pwa]: mobileShowChat state toggles chat view on mobile — CSS handles desktop, state handles mobile nav pattern (WhatsApp-style)
+- [Phase 08-mobile-pwa]: 100dvh for mobile chat container height — handles iOS Safari bottom chrome shrinking the layout viewport
+- [Phase 08-mobile-pwa]: Serwist v9 uses new Serwist() class + addEventListeners() — installSerwist() was removed in v9 API
 
 ### Roadmap Evolution
 
@@ -196,6 +200,6 @@ None — all phases complete.
 
 ## Session Continuity
 
-Last session: 2026-03-26T02:08:35.105Z
-Stopped at: Phase 8 context gathered
-Resume file: .planning/phases/08-mobile-pwa/08-CONTEXT.md
+Last session: 2026-03-26T03:19:05.672Z
+Stopped at: Completed 08-mobile-pwa/08-02-PLAN.md
+Resume file: None