feat(P5C.T4): confetti burst on game win

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/desktop/package.json

@@ -25,6 +25,7 @@
     "@livekit/track-processors": "^0.7.2",
     "@supabase/supabase-js": "^2.46.0",
     "better-sqlite3": "^11.3.0",
+    "canvas-confetti": "^1.9.4",
     "electron-updater": "^6.3.0",
     "i18next": "^23.16.4",
     "libsodium-wrappers-sumo": "0.7.15",
@@ -38,6 +39,7 @@
   },
   "devDependencies": {
     "@types/better-sqlite3": "^7.6.0",
+    "@types/canvas-confetti": "^1.9.0",
     "@types/libsodium-wrappers": "^0.7.14",
     "@types/libsodium-wrappers-sumo": "^0.8.2",
     "@types/react": "^18.3.12",