chore: release v0.3.3

Features:
- Health check endpoint for Portainer monitoring
- Local search filtering in DataGrid
- Container status badges reflect health (green/orange/blue)

Improvements:
- Standardized 56px header heights across panels
- Container grid parses Docker API format correctly
- Search bar styling improvements
- Status badges have consistent width

Fixes:
- Quick links persistence (link type, form refresh)
- Iframe switching closes existing content first
- ContainerState type conflict resolved

Branding:
- Updated favicon and icons with Tatlock bucket logo

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

lib/shared/components/data_grid/data_grid_provider.dart

@@ -35,6 +35,9 @@ class DataGridController<T> extends StateNotifier<DataGridState<T>> {
   /// Debounce timer for search.
   Timer? _searchDebounce;
 
+  /// All items before local filtering (for local search).
+  List<T> _allItems = [];
+
   @override
   void dispose() {
     _searchDebounce?.cancel();
@@ -57,16 +60,21 @@ class DataGridController<T> extends StateNotifier<DataGridState<T>> {
       final (offset, limit) = _getPaginationParams();
 
       final result = await source.fetch(
-        searchQuery: state.searchQuery.isEmpty ? null : state.searchQuery,
         sortField: sortField,
         sortDescending: state.sortDescending,
         offset: offset,
         limit: limit,
       );
 
+      // Store all items for local filtering
+      _allItems = result.items;
+
+      // Apply local filter if search query exists
+      final filteredItems = _applyLocalFilter(_allItems);
+
       state = state.copyWith(
-        items: result.items,
-        totalCount: result.totalCount,
+        items: filteredItems,
+        totalCount: filteredItems.length,
         hasMore: result.hasMore,
         isLoading: false,
         isInitialLoad: false,
@@ -82,6 +90,26 @@ class DataGridController<T> extends StateNotifier<DataGridState<T>> {
     }
   }
 
+  /// Applies local filtering based on search query.
+  List<T> _applyLocalFilter(List<T> items) {
+    if (state.searchQuery.isEmpty) return items;
+
+    final query = state.searchQuery.toLowerCase();
+
+    return items.where((item) {
+      // Check all searchable columns
+      for (final column in config.columns) {
+        if (column.searchable) {
+          final value = column.valueBuilder(item);
+          if (value.toLowerCase().contains(query)) {
+            return true;
+          }
+        }
+      }
+      return false;
+    }).toList();
+  }
+
   /// Gets pagination parameters based on data mode.
   (int?, int?) _getPaginationParams() {
     return switch (config.dataMode) {
@@ -97,13 +125,13 @@ class DataGridController<T> extends StateNotifier<DataGridState<T>> {
   /// Refreshes the grid data.
   Future<void> refresh() => _load(refresh: true);
 
-  /// Sets the search query with debouncing.
+  /// Sets the search query with debouncing (filters locally).
   void search(String query) {
     _searchDebounce?.cancel();
-    _searchDebounce = Timer(const Duration(milliseconds: 300), () {
+    _searchDebounce = Timer(const Duration(milliseconds: 150), () {
       if (state.searchQuery != query) {
         state = state.copyWith(searchQuery: query, currentPage: 0);
-        _load(refresh: true);
+        _applyFilterAndUpdateState();
       }
     });
   }
@@ -113,10 +141,19 @@ class DataGridController<T> extends StateNotifier<DataGridState<T>> {
     _searchDebounce?.cancel();
     if (state.searchQuery.isNotEmpty) {
       state = state.copyWith(searchQuery: '', currentPage: 0);
-      _load(refresh: true);
+      _applyFilterAndUpdateState();
     }
   }
 
+  /// Applies local filter and updates state with filtered items.
+  void _applyFilterAndUpdateState() {
+    final filteredItems = _applyLocalFilter(_allItems);
+    state = state.copyWith(
+      items: filteredItems,
+      totalCount: filteredItems.length,
+    );
+  }
+
   /// Sorts by the given column index.
   void sortBy(int columnIndex) {
     final column = config.columns[columnIndex];