feat: update TypeScript config for platform services

- Add useDefineForClassFields for class field initialization
- Remove test-playwright from includes
- Add tsconfig.node.json reference
- Remove redundant node_modules exclude

src/services/PlatformService.ts

@@ -0,0 +1,20 @@
+export interface PlatformService {
+  // File system operations
+  readFile(path: string): Promise<string>;
+  writeFile(path: string, content: string): Promise<void>;
+  deleteFile(path: string): Promise<void>;
+  listFiles(directory: string): Promise<string[]>;
+
+  // Camera operations
+  takePicture(): Promise<string>;
+  pickImage(): Promise<string>;
+
+  // Platform specific features
+  isCapacitor(): boolean;
+  isElectron(): boolean;
+  isPyWebView(): boolean;
+  isWeb(): boolean;
+
+  // Deep linking
+  handleDeepLink(url: string): Promise<void>;
+}