feat(20-03): unify member editor + declutter admin members panel

- playwright-cli verified: Members tab shows tappable rows, no retired buttons
- Row tap opens 'Edit member' sheet; per-section saves keep sheet open
- 'Add member' trigger opens 'Add member' sheet in create mode
- Profile save fires 'Profile saved.' toast; sheet stays open (D-05)
- eslint + prettier + typecheck + vitest (275 tests) all pass
- Fix pre-existing prettier drift in docs/*, CLAUDE.md, README.md, api/admin.ts

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',
+          },
         ],
       },
     }),