feat(logout): implement cache cleanup and service worker unregistration on logout

- Added a new utility, CacheCleanup, to handle clearing caches and unregistering the service worker during user logout.
- Enhanced the LoggingOutPage to utilize CacheCleanup for clearing local session and caches before redirecting to the login page.
- Introduced ModuleErrorBoundary to manage module loading errors, providing user feedback and options to retry or reload the application.
- Updated App component to include global error handlers for improved error management related to module loading issues.

worklenz-frontend/src/utils/cache-cleanup.ts

@@ -0,0 +1,163 @@
+/**
+ * Cache cleanup utilities for logout operations
+ * Handles clearing of various caches to prevent stale data issues
+ */
+
+export class CacheCleanup {
+  /**
+   * Clear all caches including service worker, browser cache, and storage
+   */
+  static async clearAllCaches(): Promise<void> {
+    try {
+      console.log('CacheCleanup: Starting cache clearing process...');
+      
+      // Clear browser caches
+      if ('caches' in window) {
+        const cacheNames = await caches.keys();
+        console.log('CacheCleanup: Found caches:', cacheNames);
+        
+        await Promise.all(
+          cacheNames.map(async cacheName => {
+            const deleted = await caches.delete(cacheName);
+            console.log(`CacheCleanup: Deleted cache "${cacheName}":`, deleted);
+            return deleted;
+          })
+        );
+        console.log('CacheCleanup: Browser caches cleared');
+      } else {
+        console.log('CacheCleanup: Cache API not supported');
+      }
+
+      // Clear service worker cache
+      if ('serviceWorker' in navigator) {
+        const registration = await navigator.serviceWorker.getRegistration();
+        if (registration) {
+          console.log('CacheCleanup: Found service worker registration');
+          
+          // Send logout message to service worker to clear its caches and unregister
+          if (registration.active) {
+            try {
+              console.log('CacheCleanup: Sending LOGOUT message to service worker...');
+              await this.sendMessageToServiceWorker('LOGOUT');
+              console.log('CacheCleanup: LOGOUT message sent successfully');
+            } catch (error) {
+              console.warn('CacheCleanup: Failed to send logout message to service worker:', error);
+              // Fallback: try to clear cache manually
+              try {
+                console.log('CacheCleanup: Trying fallback CLEAR_CACHE message...');
+                await this.sendMessageToServiceWorker('CLEAR_CACHE');
+                console.log('CacheCleanup: CLEAR_CACHE message sent successfully');
+              } catch (fallbackError) {
+                console.warn('CacheCleanup: Failed to clear service worker cache:', fallbackError);
+              }
+            }
+          }
+          
+          // If service worker is still registered, unregister it
+          if (registration.active) {
+            console.log('CacheCleanup: Unregistering service worker...');
+            await registration.unregister();
+            console.log('CacheCleanup: Service worker unregistered');
+          }
+        } else {
+          console.log('CacheCleanup: No service worker registration found');
+        }
+      } else {
+        console.log('CacheCleanup: Service Worker not supported');
+      }
+
+      // Clear localStorage and sessionStorage
+      const localStorageKeys = Object.keys(localStorage);
+      const sessionStorageKeys = Object.keys(sessionStorage);
+      
+      console.log('CacheCleanup: Clearing localStorage keys:', localStorageKeys);
+      console.log('CacheCleanup: Clearing sessionStorage keys:', sessionStorageKeys);
+      
+      localStorage.clear();
+      sessionStorage.clear();
+      console.log('CacheCleanup: Local storage cleared');
+
+      console.log('CacheCleanup: Cache clearing process completed successfully');
+
+    } catch (error) {
+      console.error('CacheCleanup: Error clearing caches:', error);
+      throw error;
+    }
+  }
+
+  /**
+   * Send message to service worker
+   */
+  private static async sendMessageToServiceWorker(type: string, payload?: any): Promise<any> {
+    if (!('serviceWorker' in navigator)) {
+      throw new Error('Service Worker not supported');
+    }
+
+    const registration = await navigator.serviceWorker.getRegistration();
+    if (!registration || !registration.active) {
+      throw new Error('Service Worker not active');
+    }
+
+    return new Promise((resolve, reject) => {
+      const messageChannel = new MessageChannel();
+      
+      messageChannel.port1.onmessage = (event) => {
+        if (event.data.error) {
+          reject(event.data.error);
+        } else {
+          resolve(event.data);
+        }
+      };
+
+      registration.active!.postMessage(
+        { type, payload },
+        [messageChannel.port2]
+      );
+
+      // Timeout after 5 seconds
+      setTimeout(() => {
+        reject(new Error('Service Worker message timeout'));
+      }, 5000);
+    });
+  }
+
+  /**
+   * Force reload the page to ensure fresh state
+   */
+  static forceReload(url: string = '/auth/login'): void {
+    // Use replace to prevent back button issues
+    window.location.replace(url);
+  }
+
+  /**
+   * Clear specific cache types
+   */
+  static async clearSpecificCaches(cacheTypes: string[]): Promise<void> {
+    if (!('caches' in window)) return;
+
+    const cacheNames = await caches.keys();
+    const cachesToDelete = cacheNames.filter(name => 
+      cacheTypes.some(type => name.includes(type))
+    );
+
+    await Promise.all(
+      cachesToDelete.map(cacheName => caches.delete(cacheName))
+    );
+  }
+
+  /**
+   * Clear API cache specifically
+   */
+  static async clearAPICache(): Promise<void> {
+    await this.clearSpecificCaches(['api', 'dynamic']);
+  }
+
+  /**
+   * Clear static asset cache
+   */
+  static async clearStaticCache(): Promise<void> {
+    await this.clearSpecificCaches(['static', 'images']);
+  }
+}
+
+export default CacheCleanup;