Agenda refactor

lib/services/caldav-sync.ts

@@ -68,9 +68,38 @@ export async function discoverInfomaniakCalendars(
     logger.debug('CalDAV client created, attempting to list directory contents');
     
     // List all calendars using PROPFIND on root
-    const items = await client.getDirectoryContents('/');
+    let items;
-    
+    try {
+      items = await client.getDirectoryContents('/');
       logger.debug(`Successfully retrieved ${items.length} items from CalDAV server`);
+    } catch (dirError: any) {
+      // Log more details about the error
+      const errorDetails: any = {
+        email,
+        error: dirError?.message || String(dirError),
+        status: dirError?.status,
+        statusText: dirError?.statusText,
+      };
+      
+      // Try to extract more details from the error
+      if (dirError?.response) {
+        errorDetails.responseStatus = dirError.response.status;
+        errorDetails.responseStatusText = dirError.response.statusText;
+        errorDetails.responseHeaders = dirError.response.headers;
+      }
+      
+      // Check if it's a 401 error specifically
+      if (dirError?.status === 401 || dirError?.response?.status === 401) {
+        logger.error('CalDAV authentication failed (401 Unauthorized)', {
+          ...errorDetails,
+          hint: 'This usually means: 1) Password is incorrect, 2) Password has changed, 3) 2FA is enabled and requires an app-specific password, 4) Account credentials are invalid',
+        });
+      } else {
+        logger.error('Error listing directory contents', errorDetails);
+      }
+      
+      throw dirError;
+    }
     
     const calendars: CalDAVCalendar[] = [];