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/metadata.ts

@@ -0,0 +1,9 @@
+import type { PlatformMetadata } from '@/platform/types';
+
+export const webMetadata: PlatformMetadata = {
+  async getVersion(): Promise<string> {
+    // Return version from env var or package.json
+    return import.meta.env.VITE_APP_VERSION || '0.1.0';
+  },
+  isTauri: false,
+};