feat(17-02): generate full icon/favicon set from logo.svg (Task 2)

- Run @vite-pwa/assets-generator minimal2023Preset against public/logo.svg
- Produce: favicon.ico (861 B, non-trivial), favicon.svg, icon-192.png (1617 B),
  icon-512.png (4221 B), icon-maskable-512.png (3353 B, 512x512 distinct maskable
  with safe-zone padding), apple-touch-icon.png (1110 B, 180x180)
- Replace 3 placeholder stubs with real generated assets
- Update pwa:icons script to include post-generation canonical rename step
- Add generator intermediate output filenames to .gitignore

apps/pwa/package.json

@@ -13,7 +13,7 @@
     "test:e2e": "playwright test",
     "test:e2e:ui": "playwright test --ui",
     "test:e2e:headed": "playwright test --headed",
-    "pwa:icons": "pwa-assets-generator generate"
+    "pwa:icons": "pwa-assets-generator --config pwa-assets.config.ts && cp public/pwa-192x192.png public/icon-192.png && cp public/pwa-512x512.png public/icon-512.png && cp public/maskable-icon-512x512.png public/icon-maskable-512.png && cp public/apple-touch-icon-180x180.png public/apple-touch-icon.png && cp public/logo.svg public/favicon.svg"
   },
   "dependencies": {
     "@dnd-kit/core": "^6.3.1",