Fix uninstall implementation to use 3-dot menu pattern

Updated AppCatalogPage.uninstallApp() to follow the proven pattern from
foundry-sample-detection-translation:

1. Search and navigate to app's catalog page
2. Check if app is actually installed before attempting uninstall
3. Click "Open menu" button (3-dot menu)
4. Click "Uninstall app" menuitem
5. Confirm uninstallation in modal
6. Wait for success message

This fixes the "Could not find Uninstall button" warning by correctly
navigating through the Foundry UI's menu structure.

Author: mraible

e2e/src/pages/AppCatalogPage.ts

@@ -283,21 +283,46 @@ export class AppCatalogPage extends BasePage {
   async uninstallApp(appName: string): Promise<void> {
     this.logger.step(`Uninstall app '${appName}'`);
 
-    const uninstallButton = this.page.getByRole('button', { name: 'Uninstall' }).first();
+    try {
+      // Search for and navigate to the app's catalog page
+      await this.searchAndNavigateToApp(appName);
 
-    if (await this.elementExists(uninstallButton, 3000)) {
-      await this.smartClick(uninstallButton, 'Uninstall button');
+      // Check if app is actually installed
+      const installedStatus = this.page.getByTestId('status-text').filter({ hasText: /^Installed$/i });
+      const isInstalled = await this.elementExists(installedStatus, 3000);
 
-      // Confirm uninstallation if prompted
-      const confirmButton = this.page.getByRole('button', { name: 'Confirm' });
-      if (await this.elementExists(confirmButton, 2000)) {
-        await this.smartClick(confirmButton, 'Confirm button');
+      if (!isInstalled) {
+        this.logger.info(`App '${appName}' is already uninstalled`);
+        return;
       }
 
-      await this.waiter.delay(2000);
+      // Click the 3-dot menu button
+      const openMenuButton = this.page.getByRole('button', { name: 'Open menu' });
+      await this.waiter.waitForVisible(openMenuButton, { description: 'Open menu button' });
+      await this.smartClick(openMenuButton, 'Open menu button');
+
+      // Click "Uninstall app" menuitem
+      const uninstallMenuItem = this.page.getByRole('menuitem', { name: 'Uninstall app' });
+      await this.waiter.waitForVisible(uninstallMenuItem, { description: 'Uninstall app menuitem' });
+      await this.smartClick(uninstallMenuItem, 'Uninstall app menuitem');
+
+      // Confirm uninstallation in modal
+      const uninstallButton = this.page.getByRole('button', { name: 'Uninstall' });
+      await this.waiter.waitForVisible(uninstallButton, { description: 'Uninstall confirmation button' });
+      await this.smartClick(uninstallButton, 'Uninstall button');
+
+      // Wait for success message
+      const successMessage = this.page.getByText(/has been uninstalled/i);
+      await this.waiter.waitForVisible(successMessage, {
+        description: 'Uninstall success message',
+        timeout: 10000
+      });
+
       this.logger.success(`App '${appName}' uninstalled successfully`);
-    } else {
-      this.logger.warn(`Could not find Uninstall button for '${appName}'`);
+
+    } catch (error) {
+      this.logger.warn(`Failed to uninstall app '${appName}': ${error.message}`);
+      throw error;
     }
   }
 }