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/vitest.config.ts

@@ -1,4 +1,4 @@
-import { defineConfig } from 'vitest/config'
+import { defineConfig } from 'vitest/config';
 
 export default defineConfig({
   test: {
@@ -11,4 +11,4 @@ export default defineConfig({
     // file's afterEach deletes rows that another file's test is still using.
     fileParallelism: false,
   },
-})
+});