fix: resolve issues #194, #195, #196, #197

- #194: Send full date format object instead of just format string to prevent JSON parse errors
- #195: Remove non-functional forgot password link, fix README port 3005 -> 3000
- #196: Use ADMIN_PASSWORD env var in migration, update existing user in create-admin script instead of failing
- #197: Convert camelCase filter keys to snake_case in photo export to match backend PhotoFilterBuilder

frontend/src/components/admin/PhotoExportMenu.tsx

@@ -75,7 +75,20 @@ export const PhotoExportMenu: React.FC<PhotoExportMenuProps> = ({
     if (selectedPhotoIds.length > 0) {
       options.photo_ids = selectedPhotoIds;
     } else if (filters) {
-      options.filter = filters;
+      // Convert camelCase filter keys to snake_case for backend
+      options.filter = {
+        min_rating: filters.minRating,
+        max_rating: filters.maxRating,
+        has_likes: filters.hasLikes,
+        min_likes: filters.minLikes,
+        has_favorites: filters.hasFavorites,
+        min_favorites: filters.minFavorites,
+        has_comments: filters.hasComments,
+        category_id: filters.categoryId,
+        logic: filters.logic,
+        sort: filters.sort,
+        order: filters.order,
+      };
     }
 
     exportMutation.mutate(options);

frontend/src/features/settings/hooks/useSettingsState.ts

@@ -256,11 +256,7 @@ export function useSettingsState() {
     mutationFn: async () => {
       const settingsData: Record<string, unknown> = {};
       Object.entries(generalSettings).forEach(([key, value]) => {
-        if (key === 'date_format' && typeof value === 'object' && value.format) {
-          settingsData[`general_${key}`] = value.format;
-        } else {
-          settingsData[`general_${key}`] = value;
-        }
+        settingsData[`general_${key}`] = value;
       });
       return settingsService.updateSettings(settingsData);
     },

frontend/src/pages/admin/AdminLoginPage.tsx

@@ -200,7 +200,7 @@ export const AdminLoginPage: React.FC = () => {
               </div>
             </div>
 
-            {/* Remember Me & Forgot Password */}
+            {/* Remember Me */}
             <div className="flex items-center justify-between">
               <label className="flex items-center">
                 <input
@@ -209,9 +209,6 @@ export const AdminLoginPage: React.FC = () => {
                 />
                 <span className="ml-2 text-sm text-neutral-700">{t('adminLogin.rememberMe')}</span>
               </label>
-              <a href="#" className="text-sm text-primary-600 hover:text-primary-700">
-                {t('adminLogin.forgotPassword')}
-              </a>
             </div>
 
             {/* reCAPTCHA */}