feat(server): webdav download and ocr actually works

frontend/src/components/Auth/Login.tsx

@@ -23,6 +23,8 @@ import {
 import { useForm, SubmitHandler } from 'react-hook-form';
 import { useAuth } from '../../contexts/AuthContext';
 import { useNavigate } from 'react-router-dom';
+import { useTheme } from '../../contexts/ThemeContext';
+import { useTheme as useMuiTheme } from '@mui/material/styles';
 
 interface LoginFormData {
   username: string;
@@ -35,6 +37,8 @@ const Login: React.FC = () => {
   const [loading, setLoading] = useState<boolean>(false);
   const { login } = useAuth();
   const navigate = useNavigate();
+  const { mode } = useTheme();
+  const theme = useMuiTheme();
   
   const {
     register,
@@ -63,7 +67,9 @@ const Login: React.FC = () => {
     <Box
       sx={{
         minHeight: '100vh',
-        background: 'linear-gradient(135deg, #667eea 0%, #764ba2 100%)',
+        background: mode === 'light' 
+          ? 'linear-gradient(135deg, #667eea 0%, #764ba2 100%)'
+          : 'linear-gradient(135deg, #1e293b 0%, #334155 50%, #475569 100%)',
         display: 'flex',
         alignItems: 'center',
         justifyContent: 'center',
@@ -102,7 +108,9 @@ const Login: React.FC = () => {
                   color: 'white',
                   fontWeight: 700,
                   mb: 1,
-                  textShadow: '0 4px 6px rgba(0, 0, 0, 0.1)',
+                  textShadow: mode === 'light' 
+                    ? '0 4px 6px rgba(0, 0, 0, 0.1)'
+                    : '0 4px 12px rgba(0, 0, 0, 0.5)',
                 }}
               >
                 Welcome to Readur
@@ -110,7 +118,9 @@ const Login: React.FC = () => {
               <Typography
                 variant="h6"
                 sx={{
-                  color: 'rgba(255, 255, 255, 0.8)',
+                  color: mode === 'light' 
+                    ? 'rgba(255, 255, 255, 0.8)'
+                    : 'rgba(255, 255, 255, 0.9)',
                   fontWeight: 400,
                 }}
               >
@@ -125,9 +135,15 @@ const Login: React.FC = () => {
                 sx={{
                   borderRadius: 4,
                   backdropFilter: 'blur(20px)',
-                  backgroundColor: 'rgba(255, 255, 255, 0.95)',
+                  backgroundColor: mode === 'light' 
-                  border: '1px solid rgba(255, 255, 255, 0.2)',
+                    ? 'rgba(255, 255, 255, 0.95)'
-                  boxShadow: '0 25px 50px -12px rgba(0, 0, 0, 0.25)',
+                    : 'rgba(30, 30, 30, 0.95)',
+                  border: mode === 'light'
+                    ? '1px solid rgba(255, 255, 255, 0.2)'
+                    : '1px solid rgba(255, 255, 255, 0.1)',
+                  boxShadow: mode === 'light'
+                    ? '0 25px 50px -12px rgba(0, 0, 0, 0.25)'
+                    : '0 25px 50px -12px rgba(0, 0, 0, 0.6)',
                 }}
               >
                 <CardContent sx={{ p: 4 }}>
@@ -242,7 +258,9 @@ const Login: React.FC = () => {
               <Typography
                 variant="body2"
                 sx={{
-                  color: 'rgba(255, 255, 255, 0.7)',
+                  color: mode === 'light' 
+                    ? 'rgba(255, 255, 255, 0.7)'
+                    : 'rgba(255, 255, 255, 0.8)',
                 }}
               >
                 © 2026 Readur. Powered by advanced OCR and AI technology.

frontend/src/components/Dashboard/Dashboard.tsx

@@ -322,6 +322,9 @@ const RecentDocuments: React.FC<RecentDocumentsProps> = ({ documents = [] }) =>
                     </Avatar>
                   </ListItemAvatar>
                   <ListItemText
+                    sx={{ 
+                      pr: 8, // Add padding-right to prevent overlap with secondary action
+                    }}
                     primary={
                       <Typography
                         variant="subtitle2"
@@ -330,6 +333,7 @@ const RecentDocuments: React.FC<RecentDocumentsProps> = ({ documents = [] }) =>
                           overflow: 'hidden',
                           textOverflow: 'ellipsis',
                           whiteSpace: 'nowrap',
+                          maxWidth: '100%',
                         }}
                       >
                         {doc.original_filename || doc.filename || 'Unknown Document'}

frontend/src/components/DocumentList.tsx

@@ -137,11 +137,11 @@ function DocumentList({ documents, loading }: DocumentListProps) {
       <ul className="divide-y divide-gray-200">
         {documents.map((document) => (
           <li key={document.id}>
-            <div className="px-4 py-4 flex items-center justify-between">
+            <div className="px-4 py-4 flex items-center gap-4">
-              <div className="flex items-center">
+              <div className="flex items-center min-w-0 flex-1">
                 {getFileIcon(document.mime_type)}
-                <div className="ml-4">
+                <div className="ml-4 min-w-0 flex-1">
-                  <div className="text-sm font-medium text-gray-900">
+                  <div className="text-sm font-medium text-gray-900 truncate">
                     {document.original_filename}
                   </div>
                   <div className="text-sm text-gray-500">
@@ -154,13 +154,15 @@ function DocumentList({ documents, loading }: DocumentListProps) {
                   </div>
                 </div>
               </div>
+              <div className="flex-shrink-0">
                 <button
                   onClick={() => handleDownload(document)}
-                className="ml-4 inline-flex items-center p-2 border border-transparent rounded-full shadow-sm text-white bg-blue-600 hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500"
+                  className="inline-flex items-center p-2 border border-transparent rounded-full shadow-sm text-white bg-blue-600 hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500"
                 >
                   <ArrowDownTrayIcon className="h-4 w-4" />
                 </button>
               </div>
+            </div>
           </li>
         ))}
       </ul>

frontend/src/components/Layout/AppLayout.tsx

@@ -94,7 +94,7 @@ const AppLayout: React.FC<AppLayoutProps> = ({ children }) => {
   };
 
   const handleNotificationClick = (event: React.MouseEvent<HTMLElement>): void => {
-    setNotificationAnchorEl(event.currentTarget);
+    setNotificationAnchorEl(notificationAnchorEl ? null : event.currentTarget);
   };
 
   const handleNotificationClose = (): void => {

frontend/src/components/Upload/UploadZone.tsx

@@ -339,8 +339,21 @@ const UploadZone: React.FC<UploadZoneProps> = ({ onUploadComplete }) => {
                   </ListItemIcon>
                   
                   <ListItemText
+                    sx={{ 
+                      pr: 6, // Add padding-right to prevent overlap with secondary action
+                    }}
                     primary={
-                      <Typography variant="subtitle2" sx={{ fontWeight: 500 }}>
+                      <Typography 
+                        variant="subtitle2" 
+                        sx={{ 
+                          fontWeight: 500,
+                          overflow: 'hidden',
+                          textOverflow: 'ellipsis',
+                          whiteSpace: 'nowrap',
+                          maxWidth: '100%',
+                        }}
+                        title={fileItem.file.name}
+                      >
                         {fileItem.file.name}
                       </Typography>
                     }

frontend/src/pages/DocumentDetailsPage.tsx

@@ -64,6 +64,12 @@ const DocumentDetailsPage: React.FC = () => {
     }
   }, [id]);
 
+  useEffect(() => {
+    if (document && document.has_ocr_text && !ocrData) {
+      fetchOcrText();
+    }
+  }, [document]);
+
   const fetchDocumentDetails = async (): Promise<void> => {
     try {
       setLoading(true);
@@ -395,6 +401,106 @@ const DocumentDetailsPage: React.FC = () => {
             </CardContent>
           </Card>
         </Grid>
+
+        {/* OCR Text Section */}
+        {document.has_ocr_text && (
+          <Grid item xs={12}>
+            <Card>
+              <CardContent>
+                <Typography variant="h6" sx={{ mb: 3, fontWeight: 600 }}>
+                  Extracted Text (OCR)
+                </Typography>
+                
+                {ocrLoading ? (
+                  <Box sx={{ display: 'flex', justifyContent: 'center', alignItems: 'center', py: 4 }}>
+                    <CircularProgress size={24} sx={{ mr: 2 }} />
+                    <Typography variant="body2" color="text.secondary">
+                      Loading OCR text...
+                    </Typography>
+                  </Box>
+                ) : ocrData ? (
+                  <>
+                    {/* OCR Stats */}
+                    <Box sx={{ mb: 3, display: 'flex', gap: 1, flexWrap: 'wrap' }}>
+                      {ocrData.ocr_confidence && (
+                        <Chip 
+                          label={`${Math.round(ocrData.ocr_confidence)}% confidence`} 
+                          color="primary" 
+                          size="small" 
+                        />
+                      )}
+                      {ocrData.ocr_word_count && (
+                        <Chip 
+                          label={`${ocrData.ocr_word_count} words`} 
+                          color="secondary" 
+                          size="small" 
+                        />
+                      )}
+                      {ocrData.ocr_processing_time_ms && (
+                        <Chip 
+                          label={`${ocrData.ocr_processing_time_ms}ms processing`} 
+                          color="info" 
+                          size="small" 
+                        />
+                      )}
+                    </Box>
+
+                    {/* OCR Error Display */}
+                    {ocrData.ocr_error && (
+                      <Alert severity="error" sx={{ mb: 3 }}>
+                        OCR Error: {ocrData.ocr_error}
+                      </Alert>
+                    )}
+
+                    {/* OCR Text Content */}
+                    <Paper
+                      sx={{
+                        p: 3,
+                        backgroundColor: (theme) => theme.palette.mode === 'light' ? 'grey.50' : 'grey.900',
+                        border: '1px solid',
+                        borderColor: 'divider',
+                        maxHeight: 400,
+                        overflow: 'auto',
+                        position: 'relative',
+                      }}
+                    >
+                      {ocrData.ocr_text ? (
+                        <Typography
+                          variant="body2"
+                          sx={{
+                            fontFamily: 'monospace',
+                            whiteSpace: 'pre-wrap',
+                            lineHeight: 1.6,
+                            color: 'text.primary',
+                          }}
+                        >
+                          {ocrData.ocr_text}
+                        </Typography>
+                      ) : (
+                        <Typography variant="body2" color="text.secondary" sx={{ fontStyle: 'italic' }}>
+                          No OCR text available for this document.
+                        </Typography>
+                      )}
+                    </Paper>
+
+                    {/* Processing Info */}
+                    {ocrData.ocr_completed_at && (
+                      <Box sx={{ mt: 2, pt: 2, borderTop: '1px solid', borderColor: 'divider' }}>
+                        <Typography variant="caption" color="text.secondary">
+                          Processing completed: {new Date(ocrData.ocr_completed_at).toLocaleString()}
+                        </Typography>
+                      </Box>
+                    )}
+                  </>
+                ) : (
+                  <Alert severity="info">
+                    OCR text is available but failed to load. Try clicking the "View OCR" button above.
+                  </Alert>
+                )}
+              </CardContent>
+            </Card>
+          </Grid>
+        )}
       </Grid>
 
       {/* OCR Text Dialog */}

frontend/src/pages/DocumentsPage.tsx

@@ -357,11 +357,13 @@ const DocumentsPage: React.FC = () => {
                   display: 'flex',
                   flexDirection: viewMode === 'list' ? 'row' : 'column',
                   transition: 'all 0.2s ease-in-out',
+                  cursor: 'pointer',
                   '&:hover': {
                     transform: 'translateY(-4px)',
                     boxShadow: (theme) => theme.shadows[4],
                   },
                 }}
+                onClick={() => navigate(`/documents/${doc.id}`)}
               >
                 {viewMode === 'grid' && (
                   <Box
@@ -449,7 +451,10 @@ const DocumentsPage: React.FC = () => {
                     
                     <IconButton
                       size="small"
-                      onClick={(e) => handleDocMenuClick(e, doc)}
+                      onClick={(e) => {
+                        e.stopPropagation();
+                        handleDocMenuClick(e, doc);
+                      }}
                     >
                       <MoreIcon />
                     </IconButton>
@@ -461,7 +466,10 @@ const DocumentsPage: React.FC = () => {
                     <Button 
                       size="small" 
                       startIcon={<DownloadIcon />}
-                      onClick={() => handleDownload(doc)}
+                      onClick={(e) => {
+                        e.stopPropagation();
+                        handleDownload(doc);
+                      }}
                       fullWidth
                     >
                       Download

frontend/src/pages/SearchPage.tsx

@@ -1111,7 +1111,7 @@ const SearchPage: React.FC = () => {
                           </Box>
                         )}
                         
-                        <Box sx={{ flexGrow: 1, minWidth: 0 }}>
+                        <Box sx={{ flexGrow: 1, minWidth: 0, pr: 1 }}>
                           <Typography 
                             variant="h6" 
                             sx={{ 

frontend/src/pages/SettingsPage.tsx

@@ -34,10 +34,11 @@ import {
   SelectChangeEvent,
   Chip,
   LinearProgress,
+  CircularProgress,
 } from '@mui/material';
 import { Edit as EditIcon, Delete as DeleteIcon, Add as AddIcon, 
          CloudSync as CloudSyncIcon, Folder as FolderIcon,
-         Assessment as AssessmentIcon } from '@mui/icons-material';
+         Assessment as AssessmentIcon, PlayArrow as PlayArrowIcon } from '@mui/icons-material';
 import { useAuth } from '../contexts/AuthContext';
 import api from '../services/api';
 
@@ -163,6 +164,12 @@ const WebDAVTabContent: React.FC<WebDAVTabContentProps> = ({
   const [estimatingCrawl, setEstimatingCrawl] = useState(false);
   const [newFolder, setNewFolder] = useState('');
   
+  // WebDAV sync state
+  const [syncStatus, setSyncStatus] = useState<any>(null);
+  const [startingSync, setStartingSync] = useState(false);
+  const [cancellingSync, setCancellingSync] = useState(false);
+  const [pollingSyncStatus, setPollingSyncStatus] = useState(false);
+  
   // Local state for input fields to prevent focus loss
   const [localWebdavServerUrl, setLocalWebdavServerUrl] = useState(settings.webdavServerUrl);
   const [localWebdavUsername, setLocalWebdavUsername] = useState(settings.webdavUsername);
@@ -285,6 +292,109 @@ const WebDAVTabContent: React.FC<WebDAVTabContentProps> = ({
     { value: 'generic', label: 'Generic WebDAV' },
   ];
 
+  // WebDAV sync functions
+  const fetchSyncStatus = async () => {
+    try {
+      const response = await api.get('/webdav/sync-status');
+      setSyncStatus(response.data);
+    } catch (error) {
+      console.error('Failed to fetch sync status:', error);
+    }
+  };
+
+  const startManualSync = async () => {
+    setStartingSync(true);
+    try {
+      const response = await api.post('/webdav/start-sync');
+      if (response.data.success) {
+        onShowSnackbar('WebDAV sync started successfully', 'success');
+        setPollingSyncStatus(true);
+        fetchSyncStatus(); // Get initial status
+      } else if (response.data.error === 'sync_already_running') {
+        onShowSnackbar('A WebDAV sync is already in progress', 'warning');
+      } else {
+        onShowSnackbar(response.data.message || 'Failed to start sync', 'error');
+      }
+    } catch (error: any) {
+      console.error('Failed to start sync:', error);
+      onShowSnackbar('Failed to start WebDAV sync', 'error');
+    } finally {
+      setStartingSync(false);
+    }
+  };
+
+  const cancelManualSync = async () => {
+    setCancellingSync(true);
+    try {
+      const response = await api.post('/webdav/cancel-sync');
+      if (response.data.success) {
+        onShowSnackbar('WebDAV sync cancelled successfully', 'info');
+        fetchSyncStatus(); // Update status
+      } else {
+        onShowSnackbar(response.data.message || 'Failed to cancel sync', 'error');
+      }
+    } catch (error: any) {
+      console.error('Failed to cancel sync:', error);
+      onShowSnackbar('Failed to cancel WebDAV sync', 'error');
+    } finally {
+      setCancellingSync(false);
+    }
+  };
+
+  // Poll sync status when enabled
+  useEffect(() => {
+    if (!settings.webdavEnabled) {
+      setSyncStatus(null);
+      setPollingSyncStatus(false);
+      return;
+    }
+
+    // Initial fetch
+    fetchSyncStatus();
+
+    // Set up polling interval
+    const interval = setInterval(() => {
+      fetchSyncStatus();
+    }, 3000); // Poll every 3 seconds
+
+    return () => clearInterval(interval);
+  }, [settings.webdavEnabled]);
+
+  // Stop polling when sync is not running
+  useEffect(() => {
+    if (syncStatus && !syncStatus.is_running && pollingSyncStatus) {
+      setPollingSyncStatus(false);
+    }
+  }, [syncStatus, pollingSyncStatus]);
+
+  // Auto-restart sync when folder list changes (if sync was running)
+  const [previousFolders, setPreviousFolders] = useState<string[]>([]);
+  useEffect(() => {
+    if (previousFolders.length > 0 && 
+        JSON.stringify(previousFolders.sort()) !== JSON.stringify([...settings.webdavWatchFolders].sort()) &&
+        syncStatus?.is_running) {
+      
+      onShowSnackbar('Folder list changed - restarting WebDAV sync', 'info');
+      
+      // Cancel current sync and start a new one
+      const restartSync = async () => {
+        try {
+          await api.post('/webdav/cancel-sync');
+          // Small delay to ensure cancellation is processed
+          setTimeout(() => {
+            startManualSync();
+          }, 1000);
+        } catch (error) {
+          console.error('Failed to restart sync after folder change:', error);
+        }
+      };
+      
+      restartSync();
+    }
+    
+    setPreviousFolders([...settings.webdavWatchFolders]);
+  }, [settings.webdavWatchFolders, syncStatus?.is_running]);
+
   return (
     <Box>
       <Typography variant="h6" sx={{ mb: 3 }}>
@@ -473,7 +583,7 @@ const WebDAVTabContent: React.FC<WebDAVTabContentProps> = ({
       )}
 
       {/* Crawl Estimation */}
-      {settings.webdavEnabled && connectionResult?.success && (
+      {settings.webdavEnabled && settings.webdavServerUrl && settings.webdavUsername && settings.webdavWatchFolders.length > 0 && (
         <Card sx={{ mb: 3 }}>
           <CardContent>
             <Typography variant="subtitle1" sx={{ mb: 2 }}>
@@ -573,6 +683,129 @@ const WebDAVTabContent: React.FC<WebDAVTabContentProps> = ({
           </CardContent>
         </Card>
       )}
+
+      {/* Manual Sync & Status */}
+      {settings.webdavEnabled && settings.webdavServerUrl && settings.webdavUsername && (
+        <Card sx={{ mb: 3 }}>
+          <CardContent>
+            <Typography variant="subtitle1" sx={{ mb: 2 }}>
+              <PlayArrowIcon sx={{ mr: 1, verticalAlign: 'middle' }} />
+              Manual Sync & Status
+            </Typography>
+            <Divider sx={{ mb: 2 }} />
+            
+            <Grid container spacing={3}>
+              {/* Sync Controls */}
+              <Grid item xs={12} md={6}>
+                <Box>
+                  <Typography variant="body2" sx={{ mb: 2, color: 'text.secondary' }}>
+                    Start a manual WebDAV sync to immediately pull new or changed files from your configured folders.
+                  </Typography>
+                  
+                  <Button
+                    variant="contained"
+                    startIcon={startingSync ? <CircularProgress size={16} /> : <PlayArrowIcon />}
+                    onClick={startManualSync}
+                    disabled={startingSync || loading || syncStatus?.is_running}
+                    sx={{ mr: 2 }}
+                  >
+                    {startingSync ? 'Starting...' : syncStatus?.is_running ? 'Sync Running...' : 'Start Sync Now'}
+                  </Button>
+                  
+                  {syncStatus?.is_running && (
+                    <Button
+                      variant="outlined"
+                      color="error"
+                      startIcon={cancellingSync ? <CircularProgress size={16} /> : undefined}
+                      onClick={cancelManualSync}
+                      disabled={cancellingSync || loading}
+                      sx={{ mr: 2 }}
+                    >
+                      {cancellingSync ? 'Cancelling...' : 'Cancel Sync'}
+                    </Button>
+                  )}
+                  
+                  {syncStatus?.is_running && (
+                    <Chip
+                      label="Sync Active"
+                      color="primary"
+                      variant="outlined"
+                      icon={<CircularProgress size={12} />}
+                      sx={{ ml: 1 }}
+                    />
+                  )}
+                </Box>
+              </Grid>
+
+              {/* Sync Status */}
+              <Grid item xs={12} md={6}>
+                {syncStatus && (
+                  <Box>
+                    <Typography variant="subtitle2" sx={{ mb: 1 }}>
+                      Sync Status
+                    </Typography>
+                    
+                    <Grid container spacing={1}>
+                      <Grid item xs={6}>
+                        <Paper sx={{ p: 1.5, textAlign: 'center' }}>
+                          <Typography variant="h6" color="primary">
+                            {syncStatus.files_processed || 0}
+                          </Typography>
+                          <Typography variant="caption" color="text.secondary">
+                            Files Processed
+                          </Typography>
+                        </Paper>
+                      </Grid>
+                      <Grid item xs={6}>
+                        <Paper sx={{ p: 1.5, textAlign: 'center' }}>
+                          <Typography variant="h6" color="secondary">
+                            {syncStatus.files_remaining || 0}
+                          </Typography>
+                          <Typography variant="caption" color="text.secondary">
+                            Files Remaining
+                          </Typography>
+                        </Paper>
+                      </Grid>
+                    </Grid>
+
+                    {syncStatus.current_folder && (
+                      <Alert severity="info" sx={{ mt: 2 }}>
+                        <Typography variant="body2">
+                          <strong>Currently syncing:</strong> {syncStatus.current_folder}
+                        </Typography>
+                      </Alert>
+                    )}
+
+                    {syncStatus.last_sync && (
+                      <Typography variant="caption" color="text.secondary" sx={{ display: 'block', mt: 1 }}>
+                        Last sync: {new Date(syncStatus.last_sync).toLocaleString()}
+                      </Typography>
+                    )}
+
+                    {syncStatus.errors && syncStatus.errors.length > 0 && (
+                      <Alert severity="error" sx={{ mt: 2 }}>
+                        <Typography variant="body2" sx={{ mb: 1 }}>
+                          <strong>Recent Errors:</strong>
+                        </Typography>
+                        {syncStatus.errors.slice(0, 3).map((error: string, index: number) => (
+                          <Typography key={index} variant="caption" sx={{ display: 'block' }}>
+                            • {error}
+                          </Typography>
+                        ))}
+                        {syncStatus.errors.length > 3 && (
+                          <Typography variant="caption" color="text.secondary">
+                            ... and {syncStatus.errors.length - 3} more errors
+                          </Typography>
+                        )}
+                      </Alert>
+                    )}
+                  </Box>
+                )}
+              </Grid>
+            </Grid>
+          </CardContent>
+        </Card>
+      )}
     </Box>
   );
 };

frontend/src/pages/WatchFolderPage.tsx

@@ -18,6 +18,7 @@ import {
   Alert,
   Button,
   IconButton,
+  CircularProgress,
 } from '@mui/material';
 import {
   Refresh as RefreshIcon,
@@ -47,6 +48,7 @@ const WatchFolderPage: React.FC = () => {
   const [loading, setLoading] = useState<boolean>(true);
   const [error, setError] = useState<string | null>(null);
   const [lastRefresh, setLastRefresh] = useState<Date | null>(null);
+  const [requeuingFailed, setRequeuingFailed] = useState<boolean>(false);
 
   // Mock configuration data (would typically come from API)
   const watchConfig: WatchConfig = {
@@ -79,6 +81,26 @@ const WatchFolderPage: React.FC = () => {
     }
   };
 
+  const requeueFailedJobs = async (): Promise<void> => {
+    try {
+      setRequeuingFailed(true);
+      const response = await queueService.requeueFailedItems();
+      const requeued = response.data.requeued_count || 0;
+      
+      if (requeued > 0) {
+        // Show success message
+        setError(null);
+        // Refresh stats to see updated counts
+        await fetchQueueStats();
+      }
+    } catch (err) {
+      console.error('Error requeuing failed jobs:', err);
+      setError('Failed to requeue failed jobs');
+    } finally {
+      setRequeuingFailed(false);
+    }
+  };
+
   const formatFileSize = (bytes: number): string => {
     if (bytes === 0) return '0 Bytes';
     const k = 1024;
@@ -132,9 +154,22 @@ const WatchFolderPage: React.FC = () => {
           startIcon={<RefreshIcon />}
           onClick={fetchQueueStats}
           disabled={loading}
+          sx={{ mr: 2 }}
         >
           Refresh
         </Button>
+        
+        {queueStats && queueStats.failed_count > 0 && (
+          <Button
+            variant="contained"
+            color="warning"
+            startIcon={requeuingFailed ? <CircularProgress size={16} /> : <RefreshIcon />}
+            onClick={requeueFailedJobs}
+            disabled={requeuingFailed || loading}
+          >
+            {requeuingFailed ? 'Requeuing...' : `Retry ${queueStats.failed_count} Failed Jobs`}
+          </Button>
+        )}
       </Box>
 
       {error && (

src/db.rs

@@ -1649,6 +1649,26 @@ impl Database {
         Ok(())
     }
 
+    // Reset any running WebDAV syncs on startup (handles server restart during sync)
+    pub async fn reset_running_webdav_syncs(&self) -> Result<i64> {
+        let result = sqlx::query(
+            r#"UPDATE webdav_sync_state 
+               SET is_running = false, 
+                   current_folder = NULL,
+                   errors = CASE 
+                       WHEN array_length(errors, 1) IS NULL OR array_length(errors, 1) = 0 
+                       THEN ARRAY['Sync interrupted by server restart']
+                       ELSE array_append(errors, 'Sync interrupted by server restart')
+                   END,
+                   updated_at = NOW()
+               WHERE is_running = true"#
+        )
+        .execute(&self.pool)
+        .await?;
+
+        Ok(result.rows_affected() as i64)
+    }
+
     // WebDAV file tracking operations
     pub async fn get_webdav_file_by_path(&self, user_id: Uuid, webdav_path: &str) -> Result<Option<crate::models::WebDAVFile>> {
         let row = sqlx::query(

src/main.rs

@@ -7,7 +7,7 @@ use axum::{
 use sqlx::Row;
 use std::sync::Arc;
 use tower_http::{cors::CorsLayer, services::{ServeDir, ServeFile}};
-use tracing::{info, error};
+use tracing::{info, error, warn};
 
 use readur::{config::Config, db::Database, AppState, *};
 
@@ -116,6 +116,18 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     // Seed system user for watcher
     seed::seed_system_user(&db).await?;
     
+    // Reset any running WebDAV syncs from previous server instance
+    match db.reset_running_webdav_syncs().await {
+        Ok(count) => {
+            if count > 0 {
+                info!("Reset {} orphaned WebDAV sync states from server restart", count);
+            }
+        }
+        Err(e) => {
+            warn!("Failed to reset running WebDAV syncs: {}", e);
+        }
+    }
+    
     let state = AppState { db, config: config.clone() };
     let state = Arc::new(state);
     

src/ocr_tests.rs

@@ -195,21 +195,18 @@ mod tests {
     fn test_image_size_validation() {
         let checker = OcrHealthChecker::new();
         
-        // Assuming we have at least 100MB available
-        let available = checker.check_memory_available();
-        if available > 100 {
         // Small image should pass
         assert!(checker.validate_memory_for_image(640, 480).is_ok());
         
-            // Extremely large image should fail
+        // Test with a ridiculously large image that would require more memory than any system has
-            let result = checker.validate_memory_for_image(50000, 50000);
+        // 100,000 x 100,000 pixels = 10 billion pixels * 4 bytes * 3 buffers = ~120GB
+        let result = checker.validate_memory_for_image(100000, 100000);
         assert!(result.is_err());
         
         if let Err(OcrError::InsufficientMemory { required, available }) = result {
             assert!(required > available);
         } else {
-                panic!("Expected InsufficientMemory error");
+            panic!("Expected InsufficientMemory error, got: {:?}", result);
-            }
         }
     }
 }

src/routes/webdav.rs

@@ -29,6 +29,7 @@ pub fn router() -> Router<Arc<AppState>> {
         .route("/estimate-crawl", post(estimate_webdav_crawl))
         .route("/sync-status", get(get_webdav_sync_status))
         .route("/start-sync", post(start_webdav_sync))
+        .route("/cancel-sync", post(cancel_webdav_sync))
 }
 
 async fn get_user_webdav_config(state: &Arc<AppState>, user_id: uuid::Uuid) -> Result<WebDAVConfig, StatusCode> {
@@ -303,6 +304,25 @@ async fn start_webdav_sync(
 ) -> Result<Json<Value>, StatusCode> {
     info!("Starting WebDAV sync for user: {}", auth_user.user.username);
 
+    // Check if a sync is already running for this user
+    match state.db.get_webdav_sync_state(auth_user.user.id).await {
+        Ok(Some(sync_state)) if sync_state.is_running => {
+            warn!("WebDAV sync already running for user {}", auth_user.user.id);
+            return Ok(Json(serde_json::json!({
+                "success": false,
+                "error": "sync_already_running",
+                "message": "A WebDAV sync is already in progress. Please wait for it to complete before starting a new sync."
+            })));
+        }
+        Ok(_) => {
+            // No sync running or no sync state exists yet - proceed
+        }
+        Err(e) => {
+            error!("Failed to check sync state for user {}: {}", auth_user.user.id, e);
+            return Err(StatusCode::INTERNAL_SERVER_ERROR);
+        }
+    }
+
     // Get user's WebDAV configuration and settings
     let webdav_config = get_user_webdav_config(&state, auth_user.user.id).await?;
     
@@ -378,3 +398,90 @@ async fn start_webdav_sync(
     })))
 }
 
+#[utoipa::path(
+    post,
+    path = "/api/webdav/cancel-sync",
+    tag = "webdav",
+    security(
+        ("bearer_auth" = [])
+    ),
+    responses(
+        (status = 200, description = "Sync cancelled successfully"),
+        (status = 400, description = "No sync running or WebDAV not configured"),
+        (status = 401, description = "Unauthorized"),
+        (status = 500, description = "Internal server error")
+    )
+)]
+async fn cancel_webdav_sync(
+    State(state): State<Arc<AppState>>,
+    auth_user: AuthUser,
+) -> Result<Json<Value>, StatusCode> {
+    info!("Cancelling WebDAV sync for user: {}", auth_user.user.username);
+
+    // Check if a sync is currently running
+    match state.db.get_webdav_sync_state(auth_user.user.id).await {
+        Ok(Some(sync_state)) if sync_state.is_running => {
+            // Mark sync as cancelled
+            let cancelled_state = crate::models::UpdateWebDAVSyncState {
+                last_sync_at: Some(chrono::Utc::now()),
+                sync_cursor: sync_state.sync_cursor,
+                is_running: false,
+                files_processed: sync_state.files_processed,
+                files_remaining: 0,
+                current_folder: None,
+                errors: vec!["Sync cancelled by user".to_string()],
+            };
+            
+            if let Err(e) = state.db.update_webdav_sync_state(auth_user.user.id, &cancelled_state).await {
+                error!("Failed to update sync state for cancellation: {}", e);
+                return Err(StatusCode::INTERNAL_SERVER_ERROR);
+            }
+            
+            info!("WebDAV sync cancelled for user {}", auth_user.user.id);
+            
+            // Send cancellation notification
+            let notification = crate::models::CreateNotification {
+                notification_type: "info".to_string(),
+                title: "WebDAV Sync Cancelled".to_string(),
+                message: "WebDAV sync was cancelled by user request".to_string(),
+                action_url: Some("/settings".to_string()),
+                metadata: Some(serde_json::json!({
+                    "sync_type": "webdav_manual",
+                    "cancelled": true
+                })),
+            };
+            
+            if let Err(e) = state.db.create_notification(auth_user.user.id, &notification).await {
+                error!("Failed to create cancellation notification: {}", e);
+            }
+            
+            Ok(Json(serde_json::json!({
+                "success": true,
+                "message": "WebDAV sync cancelled successfully"
+            })))
+        }
+        Ok(Some(_)) => {
+            // No sync running
+            warn!("Attempted to cancel WebDAV sync for user {} but no sync is running", auth_user.user.id);
+            Ok(Json(serde_json::json!({
+                "success": false,
+                "error": "no_sync_running",
+                "message": "No WebDAV sync is currently running"
+            })))
+        }
+        Ok(None) => {
+            // No sync state exists
+            warn!("No WebDAV sync state found for user {}", auth_user.user.id);
+            Ok(Json(serde_json::json!({
+                "success": false,
+                "error": "no_sync_state",
+                "message": "No WebDAV sync state found"
+            })))
+        }
+        Err(e) => {
+            error!("Failed to get sync state for user {}: {}", auth_user.user.id, e);
+            Err(StatusCode::INTERNAL_SERVER_ERROR)
+        }
+    }
+}
+

src/routes/webdav/webdav_sync.rs

@@ -35,6 +35,51 @@ pub async fn perform_webdav_sync_with_tracking(
         error!("Failed to update sync state: {}", e);
     }
 
+    // Ensure sync state is cleared on any exit path
+    let cleanup_sync_state = |errors: Vec<String>, files_processed: usize| {
+        let state_clone = state.clone();
+        let user_id_clone = user_id;
+        tokio::spawn(async move {
+            let final_state = UpdateWebDAVSyncState {
+                last_sync_at: Some(Utc::now()),
+                sync_cursor: None,
+                is_running: false,
+                files_processed: files_processed as i64,
+                files_remaining: 0,
+                current_folder: None,
+                errors,
+            };
+            
+            if let Err(e) = state_clone.db.update_webdav_sync_state(user_id_clone, &final_state).await {
+                error!("Failed to cleanup sync state: {}", e);
+            }
+        });
+    };
+
+    // Perform sync with proper cleanup
+    let sync_result = perform_sync_internal(state.clone(), user_id, webdav_service, config, enable_background_ocr).await;
+    
+    match &sync_result {
+        Ok(files_processed) => {
+            cleanup_sync_state(Vec::new(), *files_processed);
+        }
+        Err(e) => {
+            let error_msg = format!("Sync failed: {}", e);
+            cleanup_sync_state(vec![error_msg], 0);
+        }
+    }
+    
+    sync_result
+}
+
+async fn perform_sync_internal(
+    state: Arc<AppState>,
+    user_id: uuid::Uuid,
+    webdav_service: WebDAVService,
+    config: WebDAVConfig,
+    enable_background_ocr: bool,
+) -> Result<usize, Box<dyn std::error::Error + Send + Sync>> {
+    
     let mut total_files_processed = 0;
     let mut sync_errors = Vec::new();
     
@@ -267,21 +312,6 @@ pub async fn perform_webdav_sync_with_tracking(
         }
     }
     
-    // Update final sync state
-    let final_state = UpdateWebDAVSyncState {
-        last_sync_at: Some(Utc::now()),
-        sync_cursor: None,
-        is_running: false,
-        files_processed: total_files_processed as i64,
-        files_remaining: 0,
-        current_folder: None,
-        errors: sync_errors,
-    };
-    
-    if let Err(e) = state.db.update_webdav_sync_state(user_id, &final_state).await {
-        error!("Failed to update final sync state: {}", e);
-    }
-    
     info!("WebDAV sync completed for user {}: {} files processed", user_id, total_files_processed);
     Ok(total_files_processed)
 }

src/tests/ocr_tests.rs

@@ -90,7 +90,7 @@ mod tests {
             .await;
         
         assert!(result.is_err());
-        assert!(result.unwrap_err().to_string().contains("Unsupported file type"));
+        assert!(result.unwrap_err().to_string().contains("Unsupported MIME type"));
     }
 
     #[tokio::test]

src/webdav_service.rs

@@ -1,6 +1,6 @@
 use anyhow::{anyhow, Result};
 use chrono::{DateTime, Utc};
-use reqwest::{Client, Method};
+use reqwest::{Client, Method, Url};
 use std::collections::HashSet;
 use std::time::Duration;
 use tokio::time::sleep;
@@ -389,9 +389,19 @@ impl WebDAVService {
     }
 
     async fn download_file_impl(&self, file_path: &str) -> Result<Vec<u8>> {
-        let file_url = format!("{}{}", self.base_webdav_url, file_path);
+        // For Nextcloud/ownCloud, the file_path might already be an absolute WebDAV path
+        // The path comes from href which is already URL-encoded
+        let file_url = if file_path.starts_with("/remote.php/dav/") {
+            // Use the server URL + the full WebDAV path
+            // Don't double-encode - the path from href is already properly encoded
+            format!("{}{}", self.config.server_url.trim_end_matches('/'), file_path)
+        } else {
+            // Traditional approach for other WebDAV servers or relative paths
+            format!("{}{}", self.base_webdav_url, file_path)
+        };
         
         debug!("Downloading file: {}", file_url);
+        debug!("Original file_path: {}", file_path);
 
         let response = self.client
             .get(&file_url)