패키지 버전 업데이트 및 SvelteKit 3, Tailwind CSS 4로 마이그레이션

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tsconfig.json

@@ -1,20 +1,10 @@
 {
-  "extends": "./.svelte-kit/tsconfig.json",
+  "extends": "$app/tsconfig",
   "compilerOptions": {
-    "allowJs": true,
-    "checkJs": true,
-    "esModuleInterop": true,
-    "forceConsistentCasingInFileNames": true,
-    "resolveJsonModule": true,
-    "skipLibCheck": true,
     "sourceMap": true,
     "strict": true,
-    "noUncheckedIndexedAccess": true,
-    "moduleResolution": "bundler"
-  }
-  // Path aliases are handled by https://svelte.dev/docs/kit/configuration#alias
-  // except $lib which is handled by https://svelte.dev/docs/kit/configuration#files
-  //
-  // If you want to overwrite includes/excludes, make sure to copy over the relevant includes/excludes
-  // from the referenced tsconfig.json - TypeScript does not merge them in
+    "noUncheckedIndexedAccess": true
+  },
+  "include": ["src", "vite.config.ts", "tests"],
+  "exclude": ["src/service-worker"]
 }