add list view

backend/internal/handler/resource.go

@@ -129,7 +129,7 @@ func (h *ResourceHandler) List(c *gin.Context) {
 		}
 
 		downloadURL := h.urls.GenerateDownloadURL(r.ID)
-		thumbURL := downloadURL
+		var thumbURL string
 		if thumbnailQuality != "" {
 			if best := h.resources.GetBestVariant(r.ID, thumbnailQuality); best != nil {
 				thumbURL = h.urls.GenerateVariantURL(best.ID)
@@ -209,7 +209,7 @@ func (h *ResourceHandler) Get(c *gin.Context) {
 	}
 
 	downloadURL := h.urls.GenerateDownloadURL(resource.ID)
-	thumbURL := downloadURL
+	var thumbURL string
 	if thumbnailQuality != "" {
 		if best := h.resources.GetBestVariant(resource.ID, thumbnailQuality); best != nil {
 			thumbURL = h.urls.GenerateVariantURL(best.ID)
@@ -399,7 +399,7 @@ func (h *ResourceHandler) ListByParent(c *gin.Context) {
 		}
 
 		downloadURL := h.urls.GenerateDownloadURL(r.ID)
-		thumbURL := downloadURL
+		var thumbURL string
 		if thumbnailQuality != "" {
 			if best := h.resources.GetBestVariant(r.ID, thumbnailQuality); best != nil {
 				thumbURL = h.urls.GenerateVariantURL(best.ID)

mobile/app/folder.tsx

@@ -1,5 +1,5 @@
 import React, { useMemo, useState, useCallback, useEffect } from 'react';
-import { View, FlatList, StyleSheet, TouchableOpacity, Text, Dimensions, Modal, TextInput } from 'react-native';
+import { View, FlatList, StyleSheet, TouchableOpacity, Text, Modal, TextInput } from 'react-native';
 import { useRoute, useNavigation, RouteProp } from '@react-navigation/native';
 import { NativeStackNavigationProp } from '@react-navigation/native-stack';
 import { MaterialIcons } from '@expo/vector-icons';
@@ -12,7 +12,7 @@ import { SelectionPanel } from '../components/SelectionPanel';
 import { ConfirmModal, type ConfirmOption } from '../components/ConfirmModal';
 import { UnifiedFileItem } from '../types';
 import { isFolder } from '../types';
-import { FileThumbnail } from '../components/FileThumbnail';
+import { FileCard } from '../components/FileCard';
 import { fileStore } from '../services/fileStore';
 import { downloadRegistry } from '../services/downloadRegistry';
 import { apiClient } from '../api/client';
@@ -20,9 +20,6 @@ import { ENDPOINTS } from '../constants/api';
 import { useQueryClient } from '@tanstack/react-query';
 import { deleteAsync } from 'expo-file-system/legacy';
 
-const NUM_COLUMNS = 3;
-const SCREEN_WIDTH = Dimensions.get('window').width;
-const ITEM_SIZE = (SCREEN_WIDTH - 16 * 2 - (NUM_COLUMNS - 1) * 6) / NUM_COLUMNS;
 const PAGE_SIZE = 100;
 
 type RootStackParamList = {
@@ -35,44 +32,6 @@ type NavigationProp = NativeStackNavigationProp<RootStackParamList>;
 
 type FolderRouteProp = RouteProp<RootStackParamList, 'Folder'>;
 
-function FolderGridItem({ file, onPress, onLongPress, selected, onFolderPress }: {
-  file: UnifiedFileItem;
-  onPress?: () => void;
-  onLongPress?: () => void;
-  selected?: boolean;
-  onFolderPress?: () => void;
-}) {
-  const folder = isFolder(file);
-
-  return (
-    <TouchableOpacity
-      style={[styles.gridItem, selected && styles.gridItemSelected]}
-      onPress={folder ? onFolderPress : onPress}
-      onLongPress={onLongPress}
-      delayLongPress={400}
-      activeOpacity={0.7}
-    >
-      <FileThumbnail
-        uri={file.url ?? file.localUri}
-        thumbnailUrl={file.thumbnailUrl}
-        mimeType={file.mimeType}
-        fileName={file.name}
-        size={ITEM_SIZE}
-        syncStatus={file.syncStatus}
-        isFolder={file.isFolder}
-      />
-      {selected && (
-        <View style={styles.selectedOverlay}>
-          <View style={styles.checkCircle}>
-            <MaterialIcons name="check" size={18} color="#fff" />
-          </View>
-        </View>
-      )}
-      <Text style={styles.fileName} numberOfLines={1}>{file.name}</Text>
-    </TouchableOpacity>
-  );
-}
-
 export function FolderScreen() {
   const route = useRoute<FolderRouteProp>();
   const navigation = useNavigation<NavigationProp>();
@@ -280,12 +239,11 @@ export function FolderScreen() {
           ) : null
         }
         renderItem={({ item: file }) => (
-          <FolderGridItem
+          <FileCard
             file={file}
             selected={selectedIds.has(file.id)}
-            onPress={() => handleItemPress(file)}
+            onPress={handleItemPress}
-            onLongPress={() => handleItemLongPress(file)}
+            onLongPress={handleItemLongPress}
-            onFolderPress={() => navigation.push('Folder', { folderId: file.id, folderName: file.name })}
           />
         )}
       />
@@ -387,6 +345,7 @@ const styles = StyleSheet.create({
   },
   list: {
     padding: 15,
+    paddingBottom: 80,
   },
   empty: {
     paddingVertical: 60,
@@ -397,36 +356,6 @@ const styles = StyleSheet.create({
     fontSize: 16,
     color: '#999',
   },
-  gridItem: {
-    width: ITEM_SIZE,
-  },
-  gridItemSelected: {
-    opacity: 0.85,
-  },
-  selectedOverlay: {
-    position: 'absolute',
-    top: 0,
-    left: 0,
-    right: 0,
-    bottom: 18,
-    justifyContent: 'flex-start',
-    alignItems: 'flex-end',
-    padding: 4,
-  },
-  checkCircle: {
-    width: 24,
-    height: 24,
-    borderRadius: 12,
-    backgroundColor: '#1976D2',
-    justifyContent: 'center',
-    alignItems: 'center',
-  },
-  fileName: {
-    fontSize: 11,
-    color: '#666',
-    marginTop: 4,
-    textAlign: 'center',
-  },
   selectionBar: {
     backgroundColor: '#fff',
     borderTopWidth: 1,

mobile/app/index.tsx

@@ -1,16 +1,14 @@
 import React, { useState, useMemo, useEffect, useCallback, useRef } from 'react';
-import { View, FlatList, StyleSheet, TouchableOpacity, Text, Dimensions, KeyboardAvoidingView, Platform, Keyboard, Alert, Modal, TextInput, ActivityIndicator } from 'react-native';
+import { View, FlatList, StyleSheet, TouchableOpacity, Text, KeyboardAvoidingView, Platform, Keyboard, Modal, TextInput, ActivityIndicator } from 'react-native';
 import { useNavigation } from '@react-navigation/native';
 import { useSafeAreaInsets } from 'react-native-safe-area-context';
 import { NativeStackNavigationProp } from '@react-navigation/native-stack';
 import { MaterialIcons } from '@expo/vector-icons';
-import { Gesture, GestureDetector } from 'react-native-gesture-handler';
-import Animated, { runOnJS, useSharedValue, useAnimatedStyle, withSpring } from 'react-native-reanimated';
 import { useAddTags, useMoveResources, useFolders, useFiles, useFreeLocalSpace, useCreateFolder } from '../hooks/useFiles';
 import { SelectionPanel } from '../components/SelectionPanel';
 import { UnifiedFileItem, isFolder } from '../types';
-import { SearchBar, SearchFilters, MediaFilter } from '../components/SearchBar';
+import { SearchBar, SearchFilters, SortState } from '../components/SearchBar';
-import { FileThumbnail } from '../components/FileThumbnail';
+import { FileCard } from '../components/FileCard';
 import { SettingsModal } from '../components/SettingsModal';
 import { ConfirmModal, type ConfirmOption } from '../components/ConfirmModal';
 import { UploadModal } from '../components/UploadModal';
@@ -29,9 +27,7 @@ import { useLocalFiles } from '../hooks/useLocalFiles';
 import { deleteAsync } from 'expo-file-system/legacy';
 import { useDebounce } from '../hooks/useDebounce';
 
-const SCREEN_WIDTH = Dimensions.get('window').width;
+const PAGE_SIZE = 100;
-const PADDING_H = 15;
-const ITEM_GAP = 6;
 
 type RootStackParamList = {
   Home: undefined;
@@ -52,37 +48,6 @@ function parseBackendDate(dateStr: string): Date | null {
   return new Date(Number(match[1]), Number(match[2]) - 1, Number(match[3]), Number(match[4]), Number(match[5]), Number(match[6]));
 }
 
-const FileGridItem = React.memo(function FileGridItem({ file, size, onPress, onLongPress, selected }: { file: UnifiedFileItem; size: number; onPress?: (f: UnifiedFileItem) => void; onLongPress?: (f: UnifiedFileItem) => void; selected?: boolean }) {
-  return (
-    <TouchableOpacity
-      style={[styles.gridItem, { width: size }, selected && styles.gridItemSelected]}
-      onPress={() => onPress?.(file)}
-      onLongPress={() => onLongPress?.(file)}
-      delayLongPress={400}
-      activeOpacity={0.7}
-    >
-      <FileThumbnail
-        uri={file.url ?? file.localUri}
-        thumbnailUrl={file.thumbnailUrl}
-        mimeType={file.mimeType}
-        fileName={file.name}
-        size={size}
-        syncStatus={file.syncStatus}
-        isFolder={file.isFolder}
-        isUploading={file.isUploading}
-        uploadProgress={file.uploadProgress}
-      />
-      {selected && (
-        <View style={styles.selectedOverlay}>
-          <View style={styles.checkCircle}>
-            <MaterialIcons name="check" size={18} color="#fff" />
-          </View>
-        </View>
-      )}
-    </TouchableOpacity>
-  );
-});
-
 function matchesQuery(file: UnifiedFileItem, query: string, filters: SearchFilters): boolean {
   if (!query) return true;
   const q = query.toLowerCase();
@@ -95,7 +60,19 @@ function matchesQuery(file: UnifiedFileItem, query: string, filters: SearchFilte
   return false;
 }
 
-const PAGE_SIZE = 100;
+function compareBySort(a: UnifiedFileItem, b: UnifiedFileItem, sort: SortState): number {
+  let cmp = 0;
+  if (sort.key === 'name') {
+    cmp = a.name.toLowerCase().localeCompare(b.name.toLowerCase());
+  } else if (sort.key === 'size') {
+    cmp = (a.size ?? 0) - (b.size ?? 0);
+  } else {
+    const da = parseBackendDate(a.createdAt);
+    const db = parseBackendDate(b.createdAt);
+    cmp = (da?.getTime() ?? 0) - (db?.getTime() ?? 0);
+  }
+  return sort.direction === 'asc' ? cmp : -cmp;
+}
 
 export function HomeScreen() {
   const navigation = useNavigation<NavigationProp>();
@@ -108,10 +85,9 @@ export function HomeScreen() {
   const [searchQuery, setSearchQuery] = useState('');
   const debouncedSearch = useDebounce(searchQuery, 250);
   const [filters, setFilters] = useState<SearchFilters>({ name: true, ocrText: true });
-  const [mediaFilter, setMediaFilter] = useState<MediaFilter>('documents');
+  const [sort, setSort] = useState<SortState>({ key: 'date', direction: 'desc' });
   const [keyboardOpen, setKeyboardOpen] = useState(false);
   const [selectedIds, setSelectedIds] = useState<Set<string>>(new Set());
-  const [numColumns, setNumColumns] = useState(3);
   const [tagModalVisible, setTagModalVisible] = useState(false);
   const [tagModalMode, setTagModalMode] = useState<'tag' | 'folder'>('tag');
   const [tagInput, setTagInput] = useState('');
@@ -130,14 +106,6 @@ export function HomeScreen() {
   const { tasks: uploadTasks } = useUploadQueue();
   useAutoSync();
 
-  const pinchScale = useSharedValue(1);
-
-  const gridAnimatedStyle = useAnimatedStyle(() => ({
-    transform: [{ scale: pinchScale.value }],
-  }));
-
-  const itemSize = (SCREEN_WIDTH - PADDING_H * 2 - (numColumns - 1) * ITEM_GAP) / numColumns;
-
   const loadMore = useCallback(() => {
     if (isFetching) return;
     const total = data?.meta?.total ?? 0;
@@ -150,7 +118,7 @@ export function HomeScreen() {
   const totalFiles = data?.meta?.total ?? 0;
   const loadedFiles = data?.data?.length ?? 0;
   const hasMore = loadedFiles > 0 && loadedFiles < totalFiles;
-  const isFiltering = mediaFilter !== 'all' || !!debouncedSearch.trim();
+  const isFiltering = !!debouncedSearch.trim();
 
   useEffect(() => {
     const show = Keyboard.addListener('keyboardDidShow', () => setKeyboardOpen(true));
@@ -201,20 +169,6 @@ export function HomeScreen() {
     [files, debouncedSearch, filters]
   );
 
-  const mediaFilteredFiles = useMemo(() => {
-    if (mediaFilter === 'all') return filteredFiles;
-
-    const PHOTOS_VIDEOS = ['image/','video/'];
-    const DOCUMENTS = ['application/','text/'];
-
-    return filteredFiles.filter((f) => {
-      const mt = (f.mimeType ?? '').toLowerCase();
-      if (mediaFilter === 'documents') return DOCUMENTS.some(docType => mt.startsWith(docType)) || PHOTOS_VIDEOS.every(docType => !mt.startsWith(docType));
-      if (mediaFilter === 'photos-videos') return PHOTOS_VIDEOS.some(docType => mt.startsWith(docType));
-      return true;
-    });
-  }, [filteredFiles, mediaFilter]);
-
   const uploadGhostItems = useMemo(() => {
     return uploadTasks
       .filter((t) => t.status === 'pending' || t.status === 'uploading')
@@ -238,17 +192,14 @@ export function HomeScreen() {
 
   const sortedFiles = useMemo(() => {
     const uploadedExistingIds = new Set(
-      mediaFilteredFiles.map((f) => f.localUri).filter(Boolean)
+      filteredFiles.map((f) => f.localUri).filter(Boolean)
     );
     const ghosts = uploadGhostItems.filter(
       (g) => g.localUri && !uploadedExistingIds.has(g.localUri)
     );
-    return [...ghosts, ...mediaFilteredFiles].sort((a, b) => {
+    const sorted = [...filteredFiles].sort((a, b) => compareBySort(a, b, sort));
-      const da = parseBackendDate(a.createdAt);
+    return [...ghosts, ...sorted];
-      const db = parseBackendDate(b.createdAt);
+  }, [filteredFiles, uploadGhostItems, sort]);
-      return (db?.getTime() ?? 0) - (da?.getTime() ?? 0);
-    });
-  }, [mediaFilteredFiles, uploadGhostItems]);
 
   const displayedCount = sortedFiles.length;
 
@@ -258,29 +209,6 @@ export function HomeScreen() {
     return map;
   }, [sortedFiles]);
 
-  const handlePinchEnd = useCallback((scale: number) => {
-    if (scale > 1.2) {
-      setNumColumns(prev => Math.max(2, prev - 1));
-    } else if (scale < 0.8) {
-      setNumColumns(prev => Math.min(6, prev + 1));
-    }
-  }, []);
-
-  const pinchGesture = useMemo(() =>
-    Gesture.Pinch()
-      .onBegin(() => {
-        pinchScale.value = 1;
-      })
-      .onChange((event) => {
-        pinchScale.value = event.scale;
-      })
-      .onEnd((event) => {
-        pinchScale.value = withSpring(1);
-        runOnJS(handlePinchEnd)(event.scale);
-      }),
-    []
-  );
-
   const toggleSelection = useCallback((id: string) => {
     setSelectedIds((prev) => {
       const next = new Set(prev);
@@ -456,14 +384,13 @@ export function HomeScreen() {
   }, [selectionMode, toggleSelection]);
 
   const renderItem = useCallback(({ item }: { item: UnifiedFileItem }) => (
-    <FileGridItem
+    <FileCard
       file={item}
-      size={itemSize}
       selected={selectedIds.has(item.id)}
       onPress={handleItemPress}
       onLongPress={handleItemLongPress}
     />
-  ), [itemSize, selectedIds, handleItemPress, handleItemLongPress]);
+  ), [selectedIds, handleItemPress, handleItemLongPress]);
 
   if (isLoading) {
     return (
@@ -535,45 +462,40 @@ export function HomeScreen() {
           )}
         </View>
       )}
-      <GestureDetector gesture={pinchGesture}>
+      <View style={styles.listWrapper}>
-        <Animated.View style={[styles.listWrapper, gridAnimatedStyle]}>
+        <FlatList
-          <FlatList
+          data={sortedFiles}
-            key={numColumns}
+          keyExtractor={(item) => item.id}
-            data={sortedFiles}
+          contentContainerStyle={styles.list}
-            keyExtractor={(item) => item.id}
+          keyboardShouldPersistTaps="handled"
-            numColumns={numColumns}
+          keyboardDismissMode="on-drag"
-            columnWrapperStyle={{ gap: ITEM_GAP }}
+          onEndReached={loadMore}
-            contentContainerStyle={styles.list}
+          onEndReachedThreshold={0.5}
-            keyboardShouldPersistTaps="handled"
+          ListFooterComponent={
-            keyboardDismissMode="on-drag"
+            hasMore ? (
-            onEndReached={loadMore}
+              <TouchableOpacity style={styles.loadMoreBtn} onPress={loadMore} disabled={isFetching}>
-            onEndReachedThreshold={0.5}
+                {isFetching ? (
-            ListFooterComponent={
+                  <ActivityIndicator size="small" color="#1976D2" />
-              hasMore ? (
+                ) : (
-                <TouchableOpacity style={styles.loadMoreBtn} onPress={loadMore} disabled={isFetching}>
+                  <Text style={styles.loadMoreText}>
-                  {isFetching ? (
+                    Charger plus ({displayedCount}{!isFiltering && `/${totalFiles}`})
-                    <ActivityIndicator size="small" color="#1976D2" />
+                  </Text>
-                  ) : (
+                )}
-                    <Text style={styles.loadMoreText}>
+              </TouchableOpacity>
-                      Charger plus ({displayedCount}{!isFiltering && `/${totalFiles}`})
+            ) : displayedCount > 0 ? (
-                    </Text>
+              <Text style={styles.loadedAllText}>{displayedCount} fichier{displayedCount > 1 ? 's' : ''}</Text>
-                  )}
+            ) : null
-                </TouchableOpacity>
+          }
-              ) : displayedCount > 0 ? (
+          ListEmptyComponent={
-                <Text style={styles.loadedAllText}>{displayedCount} fichier{displayedCount > 1 ? 's' : ''}</Text>
+            <View style={styles.empty}>
-              ) : null
+              <Text style={styles.emptyText}>
-            }
+                {debouncedSearch ? 'Aucun résultat' : 'Aucun fichier'}
-            ListEmptyComponent={
+              </Text>
-              <View style={styles.empty}>
+            </View>
-                <Text style={styles.emptyText}>
+          }
-                  {debouncedSearch ? 'Aucun résultat' : 'Aucun fichier'}
+          renderItem={renderItem}
-                </Text>
+        />
-              </View>
+      </View>
-            }
-            renderItem={renderItem}
-          />
-        </Animated.View>
-      </GestureDetector>
 
       {!selectionMode && (
         <SearchBar
@@ -582,8 +504,8 @@ export function HomeScreen() {
           onClear={() => setSearchQuery('')}
           filters={filters}
           onFiltersChange={setFilters}
-          mediaFilter={mediaFilter}
+          sort={sort}
-          onMediaFilterChange={setMediaFilter}
+          onSortChange={setSort}
           bottomPadding={keyboardOpen ? insets.bottom+8 : 0}
         />
       )}
@@ -785,7 +707,8 @@ const styles = StyleSheet.create({
     flex: 1,
   },
   list: {
-    padding: PADDING_H,
+    paddingHorizontal: 15,
+    paddingTop: 10,
     paddingBottom: 80,
   },
   empty: {
@@ -796,30 +719,6 @@ const styles = StyleSheet.create({
     fontSize: 16,
     color: '#999',
   },
-  gridItem: {
-    marginBottom: ITEM_GAP,
-  },
-  gridItemSelected: {
-    opacity: 0.85,
-  },
-  selectedOverlay: {
-    position: 'absolute',
-    top: 0,
-    left: 0,
-    right: 0,
-    bottom: 0,
-    justifyContent: 'flex-start',
-    alignItems: 'flex-end',
-    padding: 4,
-  },
-  checkCircle: {
-    width: 24,
-    height: 24,
-    borderRadius: 12,
-    backgroundColor: '#1976D2',
-    justifyContent: 'center',
-    alignItems: 'center',
-  },
   bottomNav: {
     flexDirection: 'row',
     justifyContent: 'space-around',

mobile/components/FileCard.tsx

@@ -1,12 +1,19 @@
 import React from 'react';
 import { View, Text, StyleSheet, TouchableOpacity, ActivityIndicator } from 'react-native';
 import { Image } from 'expo-image';
+import { MaterialIcons } from '@expo/vector-icons';
 import { FileItem } from '../types';
 import { TagChip } from './TagChip';
+import { SyncStatusBadge } from './SyncStatusBadge';
+import type { ComponentProps } from 'react';
+
+type IconName = ComponentProps<typeof MaterialIcons>['name'];
 
 interface FileCardProps {
   file: FileItem;
   onPress?: (file: FileItem) => void;
+  onLongPress?: (file: FileItem) => void;
+  selected?: boolean;
 }
 
 function formatSize(bytes: number) {
@@ -15,34 +22,112 @@ function formatSize(bytes: number) {
   return `${(bytes / (1024 * 1024)).toFixed(1)} MB`;
 }
 
-export function FileCard({ file, onPress }: FileCardProps) {
+function getFileInfo(mimeType: string, fileName: string): { icon: IconName; color: string; bg: string } {
-  const imageUri = file.thumbnailUrl || (file.url && file.mimeType?.startsWith('image/') ? file.url : undefined);
+  if (mimeType.startsWith('image/')) return { icon: 'image', color: '#4CAF50', bg: '#E8F5E9' };
+  if (mimeType === 'application/pdf') return { icon: 'picture-as-pdf', color: '#E53935', bg: '#FFEBEE' };
+  if (mimeType.includes('word') || mimeType.includes('document')) return { icon: 'description', color: '#1565C0', bg: '#E3F2FD' };
+  if (mimeType.includes('spreadsheet') || mimeType.includes('excel') || mimeType.includes('csv')) return { icon: 'table-chart', color: '#2E7D32', bg: '#E8F5E9' };
+  if (mimeType.includes('presentation') || mimeType.includes('powerpoint')) return { icon: 'slideshow', color: '#E65100', bg: '#FFF3E0' };
+  if (mimeType.startsWith('text/')) return { icon: 'article', color: '#546E7A', bg: '#ECEFF1' };
+  if (mimeType.startsWith('video/')) return { icon: 'movie', color: '#6A1B9A', bg: '#F3E5F5' };
+  if (mimeType.startsWith('audio/')) return { icon: 'audiotrack', color: '#AD1457', bg: '#FCE4EC' };
+  if (mimeType.includes('zip') || mimeType.includes('compressed') || mimeType.includes('rar') || mimeType.includes('tar')) return { icon: 'folder-zip', color: '#6D4C41', bg: '#EFEBE9' };
+  if (mimeType.includes('json') || mimeType.includes('xml')) return { icon: 'code', color: '#37474F', bg: '#ECEFF1' };
+  return { icon: 'insert-drive-file', color: '#757575', bg: '#F5F5F5' };
+}
+
+function getExtension(fileName: string): string {
+  const ext = fileName.split('.').pop();
+  return ext ? ext.toUpperCase() : '';
+}
+
+export function FileCard({ file, onPress, onLongPress, selected }: FileCardProps) {
+  const info = getFileInfo(file.mimeType, file.name);
+  const ext = getExtension(file.name);
+
+  const imageUri = file.thumbnailUrl || file.thumbnailLocal || (file.url && file.mimeType?.startsWith('image/') ? file.url : undefined) || (file.localUri && file.mimeType?.startsWith('image/') ? file.localUri : undefined);
+  const isFolder = file.isFolder;
+  const isUploading = file.isUploading;
 
   return (
-    <TouchableOpacity style={styles.container} onPress={() => onPress?.(file)}>
+    <TouchableOpacity
-      {imageUri && (
+      style={[styles.container, selected && styles.containerSelected]}
-        <View style={styles.imageContainer}>
+      onPress={() => onPress?.(file)}
-          <Image source={{ uri: imageUri }} style={styles.image} contentFit="cover" cachePolicy="memory-disk" transition={200} />
+      onLongPress={() => onLongPress?.(file)}
-        </View>
+      delayLongPress={400}
-      )}
+      activeOpacity={0.7}
+    >
+      <View style={styles.thumbnailWrap}>
+        {isFolder ? (
+          <View style={[styles.thumbnail, styles.placeholder, { backgroundColor: '#FFF3E0' }]}>
+            <MaterialIcons name="folder" size={30} color="#F57C00" />
+          </View>
+        ) : imageUri ? (
+          <Image
+            source={{ uri: imageUri }}
+            style={styles.thumbnail}
+            contentFit="cover"
+            cachePolicy="memory-disk"
+            transition={200}
+          />
+        ) : (
+          <View style={[styles.thumbnail, styles.placeholder, { backgroundColor: info.bg }]}>
+            {isUploading ? (
+              <ActivityIndicator size="small" color="#1976D2" />
+            ) : (
+              <>
+                <MaterialIcons name={info.icon} size={26} color={info.color} />
+                {ext.length <= 4 && <Text style={[styles.ext, { color: info.color }]}>{ext}</Text>}
+              </>
+            )}
+          </View>
+        )}
 
-      <View style={styles.header}>
+        {selected && (
-        <Text style={styles.name} numberOfLines={1}>
+          <View style={styles.selectedOverlay}>
-          {file.name}
+            <View style={styles.checkCircle}>
-        </Text>
+              <MaterialIcons name="check" size={16} color="#fff" />
-        <Text style={styles.size}>{formatSize(file.size)}</Text>
+            </View>
+          </View>
+        )}
+
+        {file.syncStatus && !isUploading && (
+          <View style={styles.badge}>
+            <SyncStatusBadge status={file.syncStatus} size={16} />
+          </View>
+        )}
       </View>
 
-      {file.ocrText && (
+      <View style={styles.body}>
-        <Text style={styles.preview} numberOfLines={2}>
+        <View style={styles.header}>
-          {file.ocrText}
+          <Text style={styles.name} numberOfLines={1}>
-        </Text>
+            {file.name}
-      )}
+          </Text>
+          {!isFolder && file.size > 0 && (
+            <Text style={styles.size}>{formatSize(file.size)}</Text>
+          )}
+        </View>
 
-      <View style={styles.tags}>
+        {isUploading ? (
-        {file.tags.map((tag) => (
+          <View style={styles.uploadRow}>
-          <TagChip key={tag.id} name={tag.tag_name} />
+            <MaterialIcons name="cloud-upload" size={14} color="#1976D2" />
-        ))}
+            <Text style={styles.uploadText}>
+              Upload {(file.uploadProgress ?? 0)}%
+            </Text>
+          </View>
+        ) : file.ocrText ? (
+          <Text style={styles.preview} numberOfLines={2}>
+            {file.ocrText}
+          </Text>
+        ) : null}
+
+        {file.tags && file.tags.length > 0 && (
+          <View style={styles.tags}>
+            {file.tags.slice(0, 3).map((tag) => (
+              <TagChip key={tag.id} name={tag.tag_name} />
+            ))}
+          </View>
+        )}
       </View>
     </TouchableOpacity>
   );
@@ -50,49 +135,104 @@ export function FileCard({ file, onPress }: FileCardProps) {
 
 const styles = StyleSheet.create({
   container: {
+    flexDirection: 'row',
     backgroundColor: '#fff',
-    borderRadius: 8,
+    borderRadius: 10,
-    padding: 12,
+    padding: 10,
     marginBottom: 8,
+    gap: 12,
     shadowColor: '#000',
     shadowOffset: { width: 0, height: 1 },
     shadowOpacity: 0.05,
     shadowRadius: 4,
-    elevation: 2,
+    elevation: 1,
   },
-  imageContainer: {
+  containerSelected: {
-    marginBottom: 8,
+    opacity: 0.85,
-    borderRadius: 4,
+    borderWidth: 1.5,
+    borderColor: '#1976D2',
+  },
+  thumbnailWrap: {
+    width: 64,
+    height: 64,
+    borderRadius: 8,
     overflow: 'hidden',
   },
-  image: {
+  thumbnail: {
-    width: '100%',
+    width: 64,
-    height: 120,
+    height: 64,
-    borderRadius: 4,
+    borderRadius: 8,
+  },
+  placeholder: {
+    justifyContent: 'center',
+    alignItems: 'center',
+    gap: 1,
+  },
+  ext: {
+    fontSize: 9,
+    fontWeight: '700',
+  },
+  selectedOverlay: {
+    position: 'absolute',
+    top: 0,
+    left: 0,
+    right: 0,
+    bottom: 0,
+    justifyContent: 'flex-start',
+    alignItems: 'flex-end',
+    padding: 4,
+  },
+  checkCircle: {
+    width: 22,
+    height: 22,
+    borderRadius: 11,
+    backgroundColor: '#1976D2',
+    justifyContent: 'center',
+    alignItems: 'center',
+  },
+  badge: {
+    position: 'absolute',
+    bottom: 4,
+    left: 4,
+  },
+  body: {
+    flex: 1,
+    justifyContent: 'center',
   },
   header: {
     flexDirection: 'row',
     justifyContent: 'space-between',
     alignItems: 'center',
     marginBottom: 4,
+    gap: 8,
   },
   name: {
-    fontSize: 16,
+    fontSize: 15,
     fontWeight: '600',
     color: '#333',
     flex: 1,
-    marginRight: 8,
   },
   size: {
-    fontSize: 13,
+    fontSize: 12,
     color: '#999',
   },
   preview: {
     fontSize: 13,
     color: '#666',
-    marginBottom: 8,
+    marginBottom: 6,
     lineHeight: 18,
   },
+  uploadRow: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    gap: 6,
+    marginBottom: 6,
+  },
+  uploadText: {
+    fontSize: 13,
+    color: '#1976D2',
+    fontWeight: '500',
+  },
   tags: {
     flexDirection: 'row',
     flexWrap: 'wrap',

mobile/components/FileThumbnail.tsx

@@ -23,6 +23,8 @@ function getFileInfo(mimeType: string, fileName: string): FileTypeInfo {
   if (mimeType.startsWith('text/')) return { icon: 'article', color: '#546E7A', bg: '#ECEFF1' };
   if (mimeType.startsWith('video/')) return { icon: 'movie', color: '#6A1B9A', bg: '#F3E5F5' };
   if (mimeType.startsWith('audio/')) return { icon: 'audiotrack', color: '#AD1457', bg: '#FCE4EC' };
+  if (mimeType.includes('zip') || mimeType.includes('compressed') || mimeType.includes('rar') || mimeType.includes('tar')) return { icon: 'folder-zip', color: '#6D4C41', bg: '#EFEBE9' };
+  if (mimeType.includes('json') || mimeType.includes('xml')) return { icon: 'code', color: '#37474F', bg: '#ECEFF1' };
   return { icon: 'insert-drive-file', color: '#757575', bg: '#F5F5F5' };
 }
 
@@ -34,6 +36,7 @@ function getExtension(fileName: string): string {
 interface FileThumbnailProps {
   uri?: string;
   thumbnailUrl?: string;
+  thumbnailLocal?: string;
   mimeType: string;
   fileName: string;
   size: number;
@@ -44,7 +47,7 @@ interface FileThumbnailProps {
   uploadProgress?: number;
 }
 
-export const FileThumbnail = React.memo(function FileThumbnail({ uri, thumbnailUrl, mimeType, fileName, size, isLoading, syncStatus, isFolder, isUploading, uploadProgress }: FileThumbnailProps) {
+export const FileThumbnail = React.memo(function FileThumbnail({ uri, thumbnailUrl, thumbnailLocal, mimeType, fileName, size, isLoading, syncStatus, isFolder, isUploading, uploadProgress }: FileThumbnailProps) {
   const info = getFileInfo(mimeType, fileName);
   const ext = getExtension(fileName);
 
@@ -64,7 +67,7 @@ export const FileThumbnail = React.memo(function FileThumbnail({ uri, thumbnailU
     );
   }
 
-  const imageUri = thumbnailUrl || (uri && mimeType.startsWith('image/') ? uri : undefined);
+  const imageUri = thumbnailUrl || thumbnailLocal || (uri && mimeType.startsWith('image/') ? uri : undefined);
 
   if (imageUri) {
     return (

mobile/components/SearchBar.tsx

@@ -10,7 +10,13 @@ export interface SearchFilters {
   ocrText: boolean;
 }
 
-export type MediaFilter = 'all' | 'documents' | 'photos-videos';
+export type SortKey = 'date' | 'name' | 'size';
+export type SortDirection = 'asc' | 'desc';
+
+export interface SortState {
+  key: SortKey;
+  direction: SortDirection;
+}
 
 interface SearchBarProps {
   query: string;
@@ -18,8 +24,8 @@ interface SearchBarProps {
   onClear: () => void;
   filters: SearchFilters;
   onFiltersChange: (f: SearchFilters) => void;
-  mediaFilter: MediaFilter;
+  sort: SortState;
-  onMediaFilterChange: (f: MediaFilter) => void;
+  onSortChange: (s: SortState) => void;
   bottomPadding?: number;
 }
 
@@ -28,31 +34,19 @@ const FILTER_OPTIONS: { key: keyof SearchFilters; label: string; icon: IconName
   { key: 'ocrText', label: 'Texte OCR', icon: 'document-scanner' },
 ];
 
-const MEDIA_OPTIONS: { key: MediaFilter; label: string; icon: IconName }[] = [
+const SORT_OPTIONS: { key: SortKey; label: string; icon: IconName }[] = [
-  { key: 'all', label: 'Tous', icon: 'filter-none' },
+  { key: 'date', label: 'Date', icon: 'schedule' },
-  { key: 'documents', label: 'Documents', icon: 'description' },
+  { key: 'name', label: 'Nom', icon: 'sort-by-alpha' },
-  { key: 'photos-videos', label: 'Photos', icon: 'photo-library' },
+  { key: 'size', label: 'Taille', icon: 'data-usage' },
 ];
 
-const MEDIA_ICONS: Record<MediaFilter, IconName> = {
+const SORT_LABELS: Record<SortKey, string> = {
-  all: 'filter-none',
+  date: 'Date',
-  documents: 'description',
+  name: 'Nom',
-  'photos-videos': 'photo-library',
+  size: 'Taille',
 };
 
-const MEDIA_LABELS: Record<MediaFilter, string> = {
+export function SearchBar({ query, onQueryChange, onClear, filters, onFiltersChange, sort, onSortChange, bottomPadding = 0 }: SearchBarProps) {
-  all: 'Tous',
-  documents: 'Documents',
-  'photos-videos': 'Photos',
-};
-
-function cycleMediaFilter(current: MediaFilter): MediaFilter {
-  if (current === 'all') return 'documents';
-  if (current === 'documents') return 'photos-videos';
-  return 'all';
-}
-
-export function SearchBar({ query, onQueryChange, onClear, filters, onFiltersChange, mediaFilter, onMediaFilterChange, bottomPadding = 0 }: SearchBarProps) {
   const animatedHeight = useRef(new Animated.Value(0)).current;
   const [panelOpen, setPanelOpen] = React.useState(false);
 
@@ -67,14 +61,22 @@ export function SearchBar({ query, onQueryChange, onClear, filters, onFiltersCha
 
   const panelMaxHeight = animatedHeight.interpolate({
     inputRange: [0, 1],
-    outputRange: [0, 120],
+    outputRange: [0, 260],
   });
 
   const toggleFilter = (key: keyof SearchFilters) => {
     onFiltersChange({ ...filters, [key]: !filters[key] });
   };
 
-  const hasActiveFilter = filters.name || filters.ocrText;
+  const selectSort = (key: SortKey) => {
+    if (sort.key === key) {
+      onSortChange({ key, direction: sort.direction === 'asc' ? 'desc' : 'asc' });
+    } else {
+      onSortChange({ key, direction: 'desc' });
+    }
+  };
+
+  const hasActiveFilter = filters.name || filters.ocrText || sort.key !== 'date';
 
   return (
     <View style={[styles.wrapper, { paddingBottom: bottomPadding }]}>
@@ -107,20 +109,10 @@ export function SearchBar({ query, onQueryChange, onClear, filters, onFiltersCha
             color={hasActiveFilter ? '#fff' : '#1976D2'}
           />
         </TouchableOpacity>
-
-        <TouchableOpacity
-          style={[styles.iconBtn, mediaFilter !== 'all' && styles.iconBtnActive]}
-          onPress={() => onMediaFilterChange(cycleMediaFilter(mediaFilter))}
-        >
-          <MaterialIcons
-            name={MEDIA_ICONS[mediaFilter]}
-            size={22}
-            color={mediaFilter !== 'all' ? '#fff' : '#1976D2'}
-          />
-        </TouchableOpacity>
       </View>
 
       <Animated.View style={[styles.filterPanel, { maxHeight: panelMaxHeight, opacity: animatedHeight }]}>
+        <Text style={styles.sectionLabel}>Rechercher dans</Text>
         {FILTER_OPTIONS.map((opt) => (
           <TouchableOpacity
             key={opt.key}
@@ -137,23 +129,33 @@ export function SearchBar({ query, onQueryChange, onClear, filters, onFiltersCha
             </Text>
           </TouchableOpacity>
         ))}
-        <View style={styles.mediaDivider} />
+
-        {MEDIA_OPTIONS.map((opt) => (
+        <Text style={styles.sectionLabel}>Trier par</Text>
-          <TouchableOpacity
+        {SORT_OPTIONS.map((opt) => {
-            key={opt.key}
+          const active = sort.key === opt.key;
-            style={[styles.filterChip, mediaFilter === opt.key && styles.filterChipActive]}
+          return (
-            onPress={() => onMediaFilterChange(opt.key)}
+            <TouchableOpacity
-          >
+              key={opt.key}
-            <MaterialIcons
+              style={[styles.filterChip, active && styles.filterChipActive]}
-              name={opt.icon}
+              onPress={() => selectSort(opt.key)}
-              size={16}
+            >
-              color={mediaFilter === opt.key ? '#fff' : '#1976D2'}
+              <MaterialIcons
-            />
+                name={active && sort.direction === 'desc' ? 'arrow-downward' : active && sort.direction === 'asc' ? 'arrow-upward' : opt.icon}
-            <Text style={[styles.filterChipText, mediaFilter === opt.key && styles.filterChipTextActive]}>
+                size={16}
-              {opt.label}
+                color={active ? '#fff' : '#1976D2'}
-            </Text>
+              />
-          </TouchableOpacity>
+              <Text style={[styles.filterChipText, active && styles.filterChipTextActive]}>
-        ))}
+                {opt.label}
+              </Text>
+            </TouchableOpacity>
+          );
+        })}
+
+        {sort.key !== 'date' && (
+          <Text style={styles.sortHint}>
+            Tri : {SORT_LABELS[sort.key]} ({sort.direction === 'asc' ? 'A → Z' : 'Z → A'})
+          </Text>
+        )}
       </Animated.View>
     </View>
   );
@@ -208,16 +210,20 @@ const styles = StyleSheet.create({
   filterPanel: {
     flexDirection: 'row',
     flexWrap: 'wrap',
+    alignItems: 'center',
     paddingHorizontal: 12,
     paddingBottom: 10,
     gap: 8,
     overflow: 'hidden',
   },
-  mediaDivider: {
+  sectionLabel: {
     width: '100%',
-    height: 1,
+    fontSize: 12,
-    backgroundColor: '#e0e0e0',
+    fontWeight: '700',
-    marginVertical: 4,
+    color: '#666',
+    marginTop: 4,
+    textTransform: 'uppercase',
+    letterSpacing: 0.5,
   },
   filterChip: {
     flexDirection: 'row',
@@ -239,4 +245,9 @@ const styles = StyleSheet.create({
   filterChipTextActive: {
     color: '#fff',
   },
+  sortHint: {
+    width: '100%',
+    fontSize: 12,
+    color: '#999',
+  },
 });

mobile/hooks/useFiles.ts

@@ -25,6 +25,7 @@ function recordToUnifiedItem(record: ReturnType<typeof fileStore.getById>): Unif
     parentResourceId: record.parentResourceId ?? undefined,
     ownerId: record.ownerId ?? undefined,
     thumbnailUrl: record.thumbnailUrl ?? undefined,
+    thumbnailLocal: record.thumbnailLocal ?? undefined,
     isDeviceFile: record.source === 'local' && !record.backendId,
   };
 }

mobile/hooks/useLocalFiles.ts

@@ -1,29 +1,56 @@
 import { useMemo, useEffect, useRef } from 'react';
+import { useQueryClient } from '@tanstack/react-query';
 import { useDeviceFiles } from './useDeviceFiles';
 import { fileStore } from '../services/fileStore';
+import { generateLocalThumbnail } from '../services/thumbnail';
 import { UnifiedFileItem } from '../types';
 
 export function useLocalFiles() {
   const { files: deviceFiles, isLoading: deviceLoading, hasPermission, requestPermission, rescan, pickAndScanRecursive, folders, refreshFolders, discovered, discoverMediaAlbums } = useDeviceFiles();
+  const queryClient = useQueryClient();
   const lastDeviceCount = useRef(0);
+  const thumbnailQueue = useRef<Set<string>>(new Set());
 
   useEffect(() => {
     if (deviceFiles.length === 0) return;
     if (deviceFiles.length === lastDeviceCount.current) return;
     lastDeviceCount.current = deviceFiles.length;
 
-    fileStore.mergeFromDevice(
+    const toMerge = deviceFiles.map((df) => ({
-      deviceFiles.map((df) => ({
+      id: df.id,
-        id: df.id,
+      uri: df.uri,
-        uri: df.uri,
+      name: df.name,
-        name: df.name,
+      mimeType: df.mimeType,
-        mimeType: df.mimeType,
+      size: df.size,
-        size: df.size,
+      createdAt: df.createdAt,
-        createdAt: df.createdAt,
+      folderId: df.folderId,
-        folderId: df.folderId,
+    }));
-      })),
+
-    );
+    fileStore.mergeFromDevice(toMerge);
-  }, [deviceFiles]);
+
+    const jobs: Promise<void>[] = [];
+    for (const df of toMerge) {
+      if (thumbnailQueue.current.has(df.id)) continue;
+      const mime = (df.mimeType ?? '').toLowerCase();
+      if (!mime.startsWith('image/')) continue;
+      if (fileStore.getById(df.id)?.thumbnailLocal) continue;
+      thumbnailQueue.current.add(df.id);
+      jobs.push(
+        generateLocalThumbnail(df.uri, df.mimeType).then((thumb) => {
+          try {
+            if (thumb) fileStore.setThumbnailLocal(df.id, thumb);
+          } catch {}
+        }).finally(() => {
+          thumbnailQueue.current.delete(df.id);
+        }),
+      );
+    }
+    if (jobs.length > 0) {
+      Promise.all(jobs).finally(() => {
+        queryClient.invalidateQueries({ queryKey: ['resources'] });
+      });
+    }
+  }, [deviceFiles, queryClient]);
 
   const localFiles = useMemo(() => {
     const registryEntries = fileStore.getAllLocal();
@@ -40,6 +67,8 @@ export function useLocalFiles() {
         source: entry.source as UnifiedFileItem['source'],
         syncStatus: entry.syncStatus as UnifiedFileItem['syncStatus'],
         localUri: entry.localUri ?? undefined,
+        thumbnailUrl: entry.thumbnailUrl ?? undefined,
+        thumbnailLocal: entry.thumbnailLocal ?? undefined,
         tags: entry.tags ?? [],
         isFolder: entry.isFolder === 1,
         parentResourceId: entry.parentResourceId ?? undefined,

mobile/hooks/useSearch.ts

@@ -21,6 +21,7 @@ function recordToUnifiedItem(record: ReturnType<typeof fileStore.getById>): Unif
     parentResourceId: record.parentResourceId ?? undefined,
     ownerId: record.ownerId ?? undefined,
     thumbnailUrl: record.thumbnailUrl ?? undefined,
+    thumbnailLocal: record.thumbnailLocal ?? undefined,
     isDeviceFile: record.source === 'local' && !record.backendId,
   };
 }

mobile/package-lock.json

@@ -22,6 +22,7 @@
         "expo-document-picker": "~57.0.1",
         "expo-file-system": "~57.0.1",
         "expo-image": "~57.0.1",
+        "expo-image-manipulator": "~57.0.14",
         "expo-image-picker": "~57.0.6",
         "expo-media-library": "~57.0.3",
         "expo-print": "~57.0.1",
@@ -4385,6 +4386,18 @@
         "expo": "*"
       }
     },
+    "node_modules/expo-image-manipulator": {
+      "version": "57.0.14",
+      "resolved": "https://registry.npmjs.org/expo-image-manipulator/-/expo-image-manipulator-57.0.14.tgz",
+      "integrity": "sha512-ObL2DZG53M26xvtbMa5kc9VQtIx7FngvqCgPsdX2Ws/TejHQTxG53z3yPpuT07PNiDMXhzZwwCvw9+fQojarag==",
+      "license": "MIT",
+      "dependencies": {
+        "expo-image-loader": "~57.0.1"
+      },
+      "peerDependencies": {
+        "expo": "*"
+      }
+    },
     "node_modules/expo-image-picker": {
       "version": "57.0.6",
       "resolved": "https://registry.npmjs.org/expo-image-picker/-/expo-image-picker-57.0.6.tgz",

mobile/package.json

@@ -17,6 +17,7 @@
     "expo-document-picker": "~57.0.1",
     "expo-file-system": "~57.0.1",
     "expo-image": "~57.0.1",
+    "expo-image-manipulator": "~57.0.14",
     "expo-image-picker": "~57.0.6",
     "expo-media-library": "~57.0.3",
     "expo-print": "~57.0.1",

mobile/services/fileStore/index.ts

@@ -6,7 +6,7 @@ import type { Tag, PendingAction, PendingActionType, PendingActionStatus } from
 
 const DB_NAME = 'vaultdrop-v3.db';
 const SCHEMA_VERSION_KEY = 'schema_version';
-const SCHEMA_VERSION = 4;
+const SCHEMA_VERSION = 5;
 
 let _db: ReturnType<typeof drizzle> | null = null;
 let _sqliteDb: SQLite.SQLiteDatabase | null = null;
@@ -65,6 +65,7 @@ function createSchema(db: SQLite.SQLiteDatabase) {
       is_folder INTEGER NOT NULL DEFAULT 0,
       ocr_text TEXT,
       thumbnail_url TEXT,
+      thumbnail_local TEXT,
       owner_id TEXT,
       created_at TEXT NOT NULL,
       updated_at TEXT NOT NULL,
@@ -165,6 +166,7 @@ export type FileRecord = {
   isFolder: number;
   ocrText: string | null;
   thumbnailUrl: string | null;
+  thumbnailLocal?: string | null;
   ownerId: string | null;
   createdAt: string;
   updatedAt: string;
@@ -185,6 +187,7 @@ type FileRow = {
   isFolder: number;
   ocrText: string | null;
   thumbnailUrl: string | null;
+  thumbnailLocal: string | null;
   ownerId: string | null;
   createdAt: string;
   updatedAt: string;
@@ -205,6 +208,7 @@ function rowToRecord(row: FileRow, tags?: Tag[]): FileRecord {
     isFolder: row.isFolder,
     ocrText: row.ocrText,
     thumbnailUrl: row.thumbnailUrl,
+    thumbnailLocal: row.thumbnailLocal,
     ownerId: row.ownerId,
     createdAt: row.createdAt,
     updatedAt: row.updatedAt,
@@ -247,6 +251,7 @@ function upsertRow(file: FileRecord) {
     isFolder: file.isFolder,
     ocrText: file.ocrText,
     thumbnailUrl: file.thumbnailUrl,
+    thumbnailLocal: file.thumbnailLocal ?? null,
     ownerId: file.ownerId,
     createdAt: file.createdAt,
     updatedAt: file.updatedAt,
@@ -265,6 +270,7 @@ function upsertRow(file: FileRecord) {
       isFolder: file.isFolder,
       ocrText: file.ocrText,
       thumbnailUrl: file.thumbnailUrl,
+      thumbnailLocal: file.thumbnailLocal ?? null,
       ownerId: file.ownerId,
       updatedAt: file.updatedAt,
       lastSyncedAt: file.lastSyncedAt,
@@ -450,6 +456,7 @@ export const fileStore = {
           isFolder: bf.isFolder ? 1 : 0,
           ocrText: bf.ocrText ?? null,
           thumbnailUrl: bf.thumbnailUrl ?? null,
+          thumbnailLocal: existing?.thumbnailLocal ?? null,
           ownerId: bf.ownerId ?? null,
           createdAt: bf.createdAt,
           updatedAt: bf.updatedAt ?? now,
@@ -492,6 +499,7 @@ export const fileStore = {
           isFolder: 0,
           ocrText: null,
           thumbnailUrl: null,
+          thumbnailLocal: null,
           ownerId: null,
           createdAt: df.createdAt,
           updatedAt: now,
@@ -509,6 +517,7 @@ export const fileStore = {
     if (updates.localUri !== undefined) setFields.localUri = updates.localUri;
     if (updates.source !== undefined) setFields.source = updates.source;
     if (updates.thumbnailUrl !== undefined) setFields.thumbnailUrl = updates.thumbnailUrl;
+    if (updates.thumbnailLocal !== undefined) setFields.thumbnailLocal = updates.thumbnailLocal;
     if (updates.ocrText !== undefined) setFields.ocrText = updates.ocrText;
     if (updates.parentResourceId !== undefined) setFields.parentResourceId = updates.parentResourceId;
     if (updates.name !== undefined) setFields.name = updates.name;
@@ -532,6 +541,12 @@ export const fileStore = {
       .where(eq(files.backendId, backendId)).run();
   },
 
+  setThumbnailLocal(id: string, thumbnailLocal: string) {
+    const d = getDb();
+    d.update(files).set({ thumbnailLocal, updatedAt: new Date().toISOString() })
+      .where(eq(files.id, id)).run();
+  },
+
   markDeleted(id: string) {
     const d = getDb();
     d.insert(deletedFiles).values({ id, deletedAt: new Date().toISOString() })

mobile/services/fileStore/schema.ts

@@ -15,6 +15,7 @@ export const files = sqliteTable(
     isFolder: integer('is_folder').notNull().default(0),
     ocrText: text('ocr_text'),
     thumbnailUrl: text('thumbnail_url'),
+    thumbnailLocal: text('thumbnail_local'),
     ownerId: text('owner_id'),
     createdAt: text('created_at').notNull(),
     updatedAt: text('updated_at').notNull(),

mobile/services/thumbnail.ts

@@ -0,0 +1,25 @@
+import { manipulateAsync, SaveFormat } from 'expo-image-manipulator';
+
+const THUMB_SIZE = 128;
+
+function isGeneratableImage(mimeType: string): boolean {
+  return (mimeType ?? '').toLowerCase().startsWith('image/');
+}
+
+export async function generateLocalThumbnail(
+  uri: string | undefined,
+  mimeType: string,
+): Promise<string | null> {
+  if (!uri || !isGeneratableImage(mimeType)) return null;
+  try {
+    const result = await manipulateAsync(
+      uri,
+      [{ resize: { width: THUMB_SIZE } }],
+      { format: SaveFormat.JPEG, compress: 0.7, base64: true },
+    );
+    if (!result.base64) return null;
+    return `data:image/jpeg;base64,${result.base64}`;
+  } catch {
+    return null;
+  }
+}

mobile/types/index.ts

@@ -26,6 +26,7 @@ export interface UnifiedFileItem {
   ownerId?: string;
   url?: string;
   thumbnailUrl?: string;
+  thumbnailLocal?: string;
   variants?: Variant[];
   isDeviceFile?: boolean;
   isUploading?: boolean;