chore(qr): add unconditional debug panel and simplify onInit for event binding test

- Add always-visible debug panel to QRScannerDialog to confirm template updates
- Simplify onInit signature and add alert to verify @init event is firing
- Refine error handling in onInit for clarity during debugging

src/components/QRScanner/QRScannerDialog.vue

@@ -201,6 +201,10 @@
       <div v-if="debugMessage" class="bg-yellow-200 text-black p-2 m-2 rounded">
         {{ debugMessage }}
       </div>
+
+      <div class="bg-red-200 text-black p-2 m-2 rounded">
+        DEBUG PANEL: If you see this, the template is updating.
+      </div>
     </div>
   </div>
 </template>
@@ -278,9 +282,9 @@ export default class QRScannerDialog extends Vue {
     }
   }
 
-  async onInit(promise: Promise<void>, attempt = 1): Promise<void> {
-    alert("onInit called, attempt: " + attempt);
-    this.debugMessage = "onInit called, attempt: " + attempt;
+  async onInit(promise: Promise<void>) {
+    alert("onInit called");
+    this.debugMessage = "onInit called";
     let timeoutHit = false;
     const timeout = setTimeout(() => {
       timeoutHit = true;
@@ -304,25 +308,19 @@ export default class QRScannerDialog extends Vue {
       clearTimeout(timeout);
       alert("Promise rejected: " + (error instanceof Error ? error.message : error));
       this.debugMessage = "Promise rejected: " + (error instanceof Error ? error.message : error);
-      if (attempt < 3) {
-        // Retry after a short delay
-        setTimeout(() => this.onInit(promise, attempt + 1), 1500);
-        this.initializationStatus = `Retrying camera initialization (attempt ${attempt + 1})...`;
-        return;
+      if (error instanceof Error) {
+        this.error = error.message;
+        this.cameraStatus = "Error";
+        if (this.onError) {
+          this.onError(error);
+        }
+        logger.error("Error initializing QR scanner:", {
+          error: error.message,
+          stack: error.stack,
+          name: error.name,
+          type: error.constructor.name,
+        });
       }
-      const wrappedError =
-        error instanceof Error ? error : new Error(String(error));
-      this.error = wrappedError.message;
-      this.cameraStatus = "Error";
-      if (this.onError) {
-        this.onError(wrappedError);
-      }
-      logger.error("Error initializing QR scanner:", {
-        error: wrappedError.message,
-        stack: wrappedError.stack,
-        name: wrappedError.name,
-        type: wrappedError.constructor.name,
-      });
     } finally {
       this.isInitializing = false;
     }