Fix Vue property conflicts in PlatformServiceMixin implementation

- Remove duplicate property declarations from TopMessage component
- Use (this as any) type assertion for mixin methods
- Resolves 'Data property already defined' warnings
- Fixes 'this.dbQuery is not a function' runtime errors

src/services/platforms/WebPlatformService.ts

@@ -47,14 +47,16 @@ export class WebPlatformService implements PlatformService {
 
   constructor() {
     WebPlatformService.instanceCount++;
-    
+
     // Only warn if multiple instances (which shouldn't happen with singleton)
     if (WebPlatformService.instanceCount > 1) {
-      console.error(`[WebPlatformService] ERROR: Multiple instances created! Count: ${WebPlatformService.instanceCount}`);
+      console.error(
+        `[WebPlatformService] ERROR: Multiple instances created! Count: ${WebPlatformService.instanceCount}`,
+      );
     } else {
       console.log(`[WebPlatformService] Initializing web platform service`);
     }
-    
+
     // Start worker initialization but don't await it in constructor
     this.workerInitPromise = this.initializeWorker();
   }
@@ -74,19 +76,26 @@ export class WebPlatformService implements PlatformService {
       // This is required for Safari compatibility with nested workers
       // It installs a handler that proxies web worker creation through the main thread
       // CRITICAL: Only call initBackend from main thread, not from worker context
-      const isMainThread = typeof window !== 'undefined';
+      const isMainThread = typeof window !== "undefined";
       if (isMainThread) {
         // We're in the main thread - safe to dynamically import and call initBackend
         try {
-          const { initBackend } = await import("absurd-sql/dist/indexeddb-main-thread");
+          const { initBackend } = await import(
+            "absurd-sql/dist/indexeddb-main-thread"
+          );
           initBackend(this.worker);
         } catch (error) {
-          console.error("[WebPlatformService] Failed to import/call initBackend:", error);
+          console.error(
+            "[WebPlatformService] Failed to import/call initBackend:",
+            error,
+          );
           throw error;
         }
       } else {
         // We're in a worker context - skip initBackend call
-        console.log("[WebPlatformService] Skipping initBackend call in worker context");
+        console.log(
+          "[WebPlatformService] Skipping initBackend call in worker context",
+        );
       }
 
       this.worker.onmessage = (event) => {
@@ -120,13 +129,16 @@ export class WebPlatformService implements PlatformService {
     const { id, type } = message;
 
     // Handle absurd-sql internal messages (these are normal, don't log)
-    if (!id && message.type?.startsWith('__absurd:')) {
+    if (!id && message.type?.startsWith("__absurd:")) {
       return; // Internal absurd-sql message, ignore silently
     }
 
     if (!id) {
       // logger.warn("[WebPlatformService] Received message without ID:", message); // DISABLED
-      console.warn("[WebPlatformService] Received message without ID:", message);
+      console.warn(
+        "[WebPlatformService] Received message without ID:",
+        message,
+      );
       return;
     }