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.

src/main.web.ts

@@ -1,10 +1,14 @@
-import { initBackend } from "absurd-sql/dist/indexeddb-main-thread";
 import { initializeApp } from "./main.common";
-import { logger } from "./utils/logger";
+// import { logger } from "./utils/logger"; // DISABLED FOR DEBUGGING
 
 const platform = process.env.VITE_PLATFORM;
 const pwa_enabled = process.env.VITE_PWA_ENABLED === "true";
 
+// Debug: Check SharedArrayBuffer availability
+console.log(`[SharedArrayBuffer] Available: ${typeof SharedArrayBuffer !== 'undefined'}`);
+console.log(`[Browser] User Agent: ${navigator.userAgent}`);
+console.log(`[Headers] Check COOP/COEP in Network tab if SharedArrayBuffer is false`);
+
 // Only import service worker for web builds
 if (pwa_enabled) {
   import("./registerServiceWorker"); // Web PWA support
@@ -12,23 +16,18 @@ if (pwa_enabled) {
 
 const app = initializeApp();
 
-function sqlInit() {
-  // see https://github.com/jlongster/absurd-sql
-  const worker = new Worker(
-    new URL("./registerSQLWorker.js", import.meta.url),
-    {
-      type: "module",
-    },
-  );
-  // This is only required because Safari doesn't support nested
-  // workers. This installs a handler that will proxy creating web
-  // workers through the main thread
-  initBackend(worker);
-}
+// Note: Worker initialization is now handled by WebPlatformService
+// This ensures single-point database access and prevents double migrations
 if (platform === "web" || platform === "development") {
-  sqlInit();
+  // logger.log( // DISABLED
+  //   "[Web] Database initialization will be handled by WebPlatformService",
+  // );
+  console.log(
+    "[Web] Database initialization will be handled by WebPlatformService",
+  );
 } else {
-  logger.warn("[Web] SQL not initialized for platform", { platform });
+  // logger.warn("[Web] SQL not initialized for platform", { platform }); // DISABLED
+  console.warn("[Web] SQL not initialized for platform", { platform });
 }
 
 app.mount("#app");