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.

apps/api/tests/fixtures/vapid.ts

@@ -9,7 +9,8 @@
  * and inlined here so tests are deterministic and offline-safe.
  */
 export const TEST_VAPID = {
-  publicKey: 'BIr9cwAc5L5ZBuY6RazVpjZfIzaAAY_dXDvaMOgM8_nGO8HSyr-WsEoxsmvhG9hWJDK-Mn07rjAFnr9S8fa2w48',
+  publicKey:
+    'BIr9cwAc5L5ZBuY6RazVpjZfIzaAAY_dXDvaMOgM8_nGO8HSyr-WsEoxsmvhG9hWJDK-Mn07rjAFnr9S8fa2w48',
   privateKey: 'IjVM8QjjFqDI9_-lhJDmG9yhPpgcrEtKmM-GP1DLiyc',
   subject: 'mailto:test@familysync.test',
-} as const
+} as const;