style(13-03): apply Prettier formatting across repo

Mechanical reformat — no logic changes. 398 files changed, 19125
insertions(+), 16457 deletions(-). Prettier 3.8.4 with .prettierrc
(singleQuote:true, semi:true, tabWidth:2, trailingComma:all,
printWidth:100). Isolated per D-13-08 for reviewability.

.planning/phases/07-mobile-test-harness/07-REVIEW-FIX.md

@@ -16,11 +16,13 @@ status: partial
 **Iteration:** 1
 
 **Summary:**
+
 - Findings in scope (fix_scope=all): 12 open/actionable + info; CR-01/BL-01/BL-02 already resolved (left intact)
 - Fixed: 6 (WR-01, WR-02, WR-05, WR-06, WR-07 — and WR-02/WR-01 share one commit)
 - Skipped: 6 (WR-03, WR-04, IN-01..IN-05) — by-design / positive notes, no net-positive edit available
 
 **Verification evidence (all fixes):**
+
 - Full E2E suite (both profiles, iphone/WebKit + pixel/Chromium): **58 passed** (29.4s), suite exit 0.
 - `pnpm --filter @familysync/pwa typecheck` (both `tsconfig.json` and `tsconfig.e2e.json`): **exit 0**.
 - SW test (WR-07) confirmed passing on BOTH iphone(WebKit) and pixel(Chromium) — re-run in isolation: 2 passed.