style(17): apply prettier formatting to satisfy CI format:check

Reformats 4 phase-17 files (SettingsSheet.tsx, tokens.css, vite.config.ts,
pwa-assets.config.ts) plus 11 pre-existing non-conformant docs/READMEs that
the repo-wide format:check also flags.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/pwa/vite.config.ts

@@ -42,7 +42,12 @@ export default defineConfig({
         icons: [
           { src: '/icon-192.png', sizes: '192x192', type: 'image/png' },
           { src: '/icon-512.png', sizes: '512x512', type: 'image/png' },
-          { src: '/icon-maskable-512.png', sizes: '512x512', type: 'image/png', purpose: 'maskable' },
+          {
+            src: '/icon-maskable-512.png',
+            sizes: '512x512',
+            type: 'image/png',
+            purpose: 'maskable',
+          },
         ],
       },
     }),