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.dart

@@ -103,9 +103,19 @@ class DataGrid<T> extends ConsumerWidget {
     DataGridState<T> state,
     DataGridController<T> controller,
   ) {
-    return Padding(
-      padding: const EdgeInsets.all(16),
+    final colorScheme = Theme.of(context).colorScheme;
+
+    return Container(
+      height: 56,
+      padding: const EdgeInsets.symmetric(horizontal: 16),
+      decoration: BoxDecoration(
+        color: colorScheme.surfaceContainerHighest,
+        border: Border(
+          bottom: BorderSide(color: colorScheme.outlineVariant),
+        ),
+      ),
       child: Row(
+        crossAxisAlignment: CrossAxisAlignment.center,
         children: [
           if (config.enableSearch)
             DataGridSearchBar(