docs(12-02): complete full i18n template coverage plan — human verification approved

- 12-02-SUMMARY.md: updated Task 3 to approved; 3/3 tasks complete
- STATE.md: session updated, plan advanced, progress 100%, decisions recorded
- ROADMAP.md: phase 12 updated to 2/2 plans complete

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

.planning/phases/12-i18n-bugfixes/12-02-SUMMARY.md

@@ -71,7 +71,7 @@ completed: 2026-04-15
 - **Duration:** ~25 min
 - **Started:** 2026-04-15T13:48:00Z
 - **Completed:** 2026-04-15T14:13:00Z
-- **Tasks:** 2/3 complete (Task 3 = human-verify checkpoint)
+- **Tasks:** 3/3 complete
 - **Files modified:** 15
 
 ## Accomplishments
@@ -87,7 +87,7 @@ Each task was committed atomically:
 
 1. **Task 1: Add missing translation keys to base.html dictionary** - `e8801ec` (feat)
 2. **Task 2: Wire all template strings to i18n store** - `59fc8b1` (feat)
-3. **Task 3: Human verification** - checkpoint (awaiting user)
+3. **Task 3: Human verification — full i18n coverage on all pages** - approved by user (2026-04-15)
 
 ## Files Created/Modified
 - `imptune/templates/base.html` - Extended translations.fr and translations.en with 60+ new keys
@@ -144,8 +144,8 @@ None - no external service configuration required.
 
 ## Next Phase Readiness
 - All template strings are wired; FR/EN toggle will update all visible UI text
-- Human verification checkpoint (Task 3) is pending — user must confirm all strings switch correctly on each page
-- After checkpoint approval, plan 12-02 is complete and phase 12 can proceed to 12-03 (if any) or close
+- Human verification (Task 3) approved 2026-04-15 — user confirmed all strings switch correctly between FR and EN on every page
+- Plan 12-02 is complete; phase 12 can proceed to 12-03 (if any) or close
 
 ---
 *Phase: 12-i18n-bugfixes*