Refactor Tauri Integration to Use Platform Context

- Replaced direct Tauri API calls with a unified platform context across multiple components, enhancing code maintainability and readability.
- Removed the deprecated tauri.ts file, consolidating platform-related logic into the new PlatformContext.
- Updated components such as App, AudioPlayer, and ServerSettings to utilize the new platform context for lifecycle management and server interactions.
- Improved platform detection and handling for audio playback and system audio capture functionalities.
- Ensured consistent error handling and user feedback across the application when interacting with platform-specific features.

web/src/platform/lifecycle.ts

@@ -0,0 +1,27 @@
+import type { PlatformLifecycle } from '@/platform/types';
+
+class WebLifecycle implements PlatformLifecycle {
+  onServerReady?: () => void;
+
+  async startServer(_remote = false): Promise<string> {
+    // Web assumes server is running externally
+    // Return a default URL - this should be configured via env vars
+    const serverUrl = import.meta.env.VITE_SERVER_URL || 'http://localhost:17493';
+    this.onServerReady?.();
+    return serverUrl;
+  }
+
+  async stopServer(): Promise<void> {
+    // No-op for web - server is managed externally
+  }
+
+  async setKeepServerRunning(_keep: boolean): Promise<void> {
+    // No-op for web
+  }
+
+  async setupWindowCloseHandler(): Promise<void> {
+    // No-op for web - no window close handling needed
+  }
+}
+
+export const webLifecycle = new WebLifecycle();