fix(e2e): resolve test failures and improve encryption UX

- Fix snackbar selector in supersync edge cases test
- Add polling for plugin navigation stability
- Show error snackbar and status icon on decryption failure
- All 5 failing tests now passing consistently

e2e/tests/plugins/plugin-lifecycle.spec.ts

@@ -154,7 +154,13 @@ test.describe('Plugin Lifecycle', () => {
 
     // Verify we navigated to the plugin page
     await expect(page).toHaveURL(/\/plugins\/api-test-plugin\/index/, { timeout: 10000 });
-    await expect(page.locator('iframe')).toBeVisible({ timeout: 10000 });
+
+    // Wait for Angular component initialization after navigation
+    await expect(async () => {
+      const iframe = page.locator('iframe');
+      await expect(iframe).toBeAttached({ timeout: 2000 });
+      await expect(iframe).toBeVisible({ timeout: 2000 });
+    }).toPass({ timeout: 10000, intervals: [500, 1000] });
 
     // Go back to work view
     await page.goto('/#/tag/TODAY');

e2e/tests/sync/supersync-edge-cases.spec.ts

@@ -636,7 +636,9 @@ test.describe('@supersync SuperSync Edge Cases', () => {
       // 4. Client A clicks Undo (snackbar should be visible)
       // The snackbar appears for 5 seconds with an "Undo" action
       // Use snack-custom .action selector (app uses custom snackbar component)
-      const undoButton = clientA.page.locator('snack-custom button.action');
+      const undoButton = clientA.page.locator(
+        'snack-custom button.action, .mat-mdc-snack-bar-container button',
+      );
       await undoButton.waitFor({ state: 'visible', timeout: 5000 });
       await undoButton.click();
 

src/app/imex/sync/sync-wrapper.service.ts

@@ -530,6 +530,17 @@ export class SyncWrapperService {
   }
 
   private _handleDecryptionError(): void {
+    // Set ERROR status so sync button shows error icon
+    this._providerManager.setSyncStatus('ERROR');
+
+    // Show snackbar (consistent with other error handlers)
+    this._snackService.open({
+      msg: T.F.SYNC.S.DECRYPTION_FAILED,
+      type: 'ERROR',
+      config: { duration: 10000 }, // Longer duration for critical errors
+    });
+
+    // Open dialog for password correction
     this._matDialog
       .open(DialogHandleDecryptErrorComponent, {
         disableClose: true,
@@ -543,6 +554,10 @@ export class SyncWrapperService {
         if (isForceUpload) {
           this.forceUpload();
         }
+        // Reset status if user cancelled without taking action
+        if (!isReSync && !isForceUpload) {
+          this._providerManager.setSyncStatus('UNKNOWN_OR_CHANGED');
+        }
       });
   }