Fix worker-only database architecture and Vue Proxy serialization

- Implement worker-only database access to eliminate double migrations
- Add parameter serialization in usePlatformService to prevent Capacitor "object could not be cloned" errors
- Fix infinite logging loop with circuit breaker in databaseUtil
- Use dynamic imports in WebPlatformService to prevent worker thread errors
- Add higher-level database methods (getContacts, getSettings) to composable
- Eliminate Vue Proxy objects through JSON serialization and Object.freeze protection

Resolves Proxy(Array) serialization failures and worker context conflicts across Web/Capacitor/Electron platforms.

vite.config.web.mts

@@ -8,6 +8,13 @@ export default defineConfig(async () => {
   const appConfig = await loadAppConfig();
 
   return mergeConfig(baseConfig, {
+    server: {
+      headers: {
+        // Enable SharedArrayBuffer for absurd-sql
+        'Cross-Origin-Opener-Policy': 'same-origin',
+        'Cross-Origin-Embedder-Policy': 'require-corp'
+      }
+    },
     plugins: [
       VitePWA({
         registerType: 'autoUpdate',