perf: optimize app startup and background lifecycles

package.json

@@ -36,6 +36,7 @@
         "dev:image-workspace:local": "node scripts/run-local-image-workspace-dev.mjs",
         "build": "pnpm run sync:learning-player && pnpm run build:vite && node scripts/bundle-opencode.mjs && node scripts/run-electron-builder.mjs",
         "build:vite": "node --max-old-space-size=6144 ./node_modules/vite/bin/vite.js build",
+        "perf:budget": "node scripts/check-performance-budget.mjs",
         "bundle:opencode": "node scripts/bundle-opencode.mjs",
         "sync:learning-player": "node scripts/sync-learning-player.mjs",
         "lint": "eslint . --fix",
@@ -82,33 +83,24 @@
         "postversion": "node scripts/post-version-push.mjs"
     },
     "dependencies": {
-        "@gsap/react": "^2.1.2",
+        "@napi-rs/canvas": "0.1.100",
         "@monaco-editor/react": "^4.7.0",
         "@playwright/mcp": "0.0.78",
-        "@sinclair/typebox": "^0.34.48",
-        "@types/diff": "^8.0.0",
         "adm-zip": "0.5.16",
-        "chokidar": "^5.0.0",
         "diff": "^9.0.0",
         "electron-store": "^11.0.2",
         "electron-updater": "^6.8.3",
-        "gsap": "^3.15.0",
         "katex": "^0.16.45",
         "koffi": "2.16.3",
-        "lru-cache": "^11.2.6",
         "monaco-editor": "^0.55.1",
         "ms": "^2.1.3",
         "msgpackr": "2.0.5",
         "node-machine-id": "^1.1.12",
         "npm": "11.6.2",
-        "pdfjs-dist": "^5.7.284",
         "posthog-node": "^5.28.0",
         "rehype-katex": "^7.0.1",
-        "remark-frontmatter": "^5.0.0",
         "remark-math": "^6.0.0",
-        "tar": "^6.2.1",
         "ws": "^8.19.0",
-        "xlsx": "^0.18.5",
         "yaml": "2.8.3"
     },
     "devDependencies": {
@@ -150,12 +142,11 @@
         "class-variance-authority": "^0.7.1",
         "clsx": "^2.1.1",
         "discord-api-types": "^0.38.47",
-        "electron": "40.10.6",
+        "electron": "43.4.0",
         "electron-builder": "^26.8.1",
         "eslint": "^10.0.0",
         "eslint-plugin-react-hooks": "^7.0.1",
         "eslint-plugin-react-refresh": "^0.5.0",
-        "framer-motion": "^12.34.2",
         "globals": "^17.3.0",
         "grammy": "^1.42.0",
         "https-proxy-agent": "^9.0.0",
@@ -180,6 +171,7 @@
         "tailwind-merge": "^3.5.0",
         "tailwindcss": "^3.4.19",
         "tailwindcss-animate": "^1.0.7",
+        "tar": "^6.2.1",
         "typescript": "^5.9.3",
         "undici": "8.1.0",
         "use-stick-to-bottom": "^1.1.3",