feat: Add filter persistence with settings integration

.env.example

@@ -16,4 +16,8 @@ ALLOWED_SCRIPT_PATHS="scripts/"
 
 # WebSocket Configuration
 WEBSOCKET_PORT="3001"
-GITHUB_TOKEN=your_github_token_here
+
+# User settings
+GITHUB_TOKEN=
+SAVE_FILTER=false
+FILTERS=

src/app/_components/DownloadedScriptsTab.tsx

@@ -20,6 +20,8 @@ export function DownloadedScriptsTab() {
     sortBy: 'name',
     sortOrder: 'asc',
   });
+  const [saveFiltersEnabled, setSaveFiltersEnabled] = useState(false);
+  const [isLoadingFilters, setIsLoadingFilters] = useState(true);
   const gridRef = useRef<HTMLDivElement>(null);
 
   const { data: scriptCardsData, isLoading: githubLoading, error: githubError, refetch } = api.scripts.getScriptCardsWithCategories.useQuery();
@@ -29,6 +31,62 @@ export function DownloadedScriptsTab() {
     { enabled: !!selectedSlug }
   );
 
+  // Load SAVE_FILTER setting and saved filters on component mount
+  useEffect(() => {
+    const loadSettings = async () => {
+      try {
+        // Load SAVE_FILTER setting
+        const saveFilterResponse = await fetch('/api/settings/save-filter');
+        let saveFilterEnabled = false;
+        if (saveFilterResponse.ok) {
+          const saveFilterData = await saveFilterResponse.json();
+          saveFilterEnabled = saveFilterData.enabled ?? false;
+          setSaveFiltersEnabled(saveFilterEnabled);
+        }
+
+        // Load saved filters if SAVE_FILTER is enabled
+        if (saveFilterEnabled) {
+          const filtersResponse = await fetch('/api/settings/filters');
+          if (filtersResponse.ok) {
+            const filtersData = await filtersResponse.json();
+            if (filtersData.filters) {
+              setFilters(filtersData.filters as FilterState);
+            }
+          }
+        }
+      } catch (error) {
+        console.error('Error loading settings:', error);
+      } finally {
+        setIsLoadingFilters(false);
+      }
+    };
+
+    void loadSettings();
+  }, []);
+
+  // Save filters when they change (if SAVE_FILTER is enabled)
+  useEffect(() => {
+    if (!saveFiltersEnabled || isLoadingFilters) return;
+
+    const saveFilters = async () => {
+      try {
+        await fetch('/api/settings/filters', {
+          method: 'POST',
+          headers: {
+            'Content-Type': 'application/json',
+          },
+          body: JSON.stringify({ filters }),
+        });
+      } catch (error) {
+        console.error('Error saving filters:', error);
+      }
+    };
+
+    // Debounce the save operation
+    const timeoutId = setTimeout(() => void saveFilters(), 500);
+    return () => clearTimeout(timeoutId);
+  }, [filters, saveFiltersEnabled, isLoadingFilters]);
+
   // Extract categories from metadata
   const categories = React.useMemo((): string[] => {
     if (!scriptCardsData?.success || !scriptCardsData.metadata?.categories) return [];
@@ -341,6 +399,8 @@ export function DownloadedScriptsTab() {
             totalScripts={downloadedScripts.length}
             filteredCount={filteredScripts.length}
             updatableCount={filterCounts.updatableCount}
+            saveFiltersEnabled={saveFiltersEnabled}
+            isLoadingFilters={isLoadingFilters}
           />
 
           {/* Scripts Grid */}

src/app/_components/FilterBar.tsx

@@ -18,6 +18,8 @@ interface FilterBarProps {
   totalScripts: number;
   filteredCount: number;
   updatableCount?: number;
+  saveFiltersEnabled?: boolean;
+  isLoadingFilters?: boolean;
 }
 
 const SCRIPT_TYPES = [
@@ -33,6 +35,8 @@ export function FilterBar({
   totalScripts,
   filteredCount,
   updatableCount = 0,
+  saveFiltersEnabled = false,
+  isLoadingFilters = false,
 }: FilterBarProps) {
   const [isTypeDropdownOpen, setIsTypeDropdownOpen] = useState(false);
   const [isSortDropdownOpen, setIsSortDropdownOpen] = useState(false);
@@ -78,6 +82,28 @@ export function FilterBar({
 
   return (
     <div className="mb-6 rounded-lg border border-border bg-card p-4 sm:p-6 shadow-sm">
+      {/* Loading State */}
+      {isLoadingFilters && (
+        <div className="mb-4 flex items-center justify-center py-2">
+          <div className="flex items-center space-x-2 text-sm text-muted-foreground">
+            <div className="h-4 w-4 animate-spin rounded-full border-2 border-primary border-t-transparent"></div>
+            <span>Loading saved filters...</span>
+          </div>
+        </div>
+      )}
+
+      {/* Filter Persistence Status */}
+      {!isLoadingFilters && saveFiltersEnabled && (
+        <div className="mb-4 flex items-center justify-center py-1">
+          <div className="flex items-center space-x-2 text-xs text-green-600">
+            <svg className="h-3 w-3" fill="currentColor" viewBox="0 0 20 20">
+              <path fillRule="evenodd" d="M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z" clipRule="evenodd" />
+            </svg>
+            <span>Filters are being saved automatically</span>
+          </div>
+        </div>
+      )}
+
       {/* Search Bar */}
       <div className="mb-4">
         <div className="relative max-w-md w-full">