feat: add Control Room with containers and stacks management

- Add Control Room page with stacks sidebar and containers list
- Implement container actions (start/stop/restart) with snackbars
- Add container logs viewer dialog
- Add search/filter for both stacks and containers lists
- Add external links for Portainer and Netdata (url_launcher)
- Add VS Code launch configuration for Flutter web debugging

🤖 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_exports.dart

@@ -0,0 +1,85 @@
+/// DataGrid component for displaying tabular data.
+///
+/// This library provides a configurable, feature-rich data grid widget
+/// for Flutter applications using Riverpod for state management.
+///
+/// Features:
+/// - Sortable columns
+/// - Row selection (single and bulk)
+/// - Per-row and bulk actions with confirmations
+/// - Search/filtering
+/// - Pagination or infinite scroll
+/// - Custom cell rendering
+/// - Empty, loading, and error states
+/// - Responsive column widths
+///
+/// Example:
+/// ```dart
+/// // Define your data source
+/// final usersSource = InMemoryDataSource<User>(
+///   items: users,
+///   searchMatcher: (user, query) =>
+///     user.name.toLowerCase().contains(query.toLowerCase()),
+/// );
+///
+/// // Define grid configuration
+/// final usersConfig = DataGridConfig<User>(
+///   columns: [
+///     DataGridColumn(
+///       header: 'Name',
+///       valueBuilder: (u) => u.name,
+///       sortable: true,
+///       searchable: true,
+///     ),
+///     DataGridColumn(
+///       header: 'Email',
+///       valueBuilder: (u) => u.email,
+///     ),
+///     DataGridColumn(
+///       header: 'Status',
+///       valueBuilder: (u) => u.status,
+///       cellBuilder: (context, u) => StatusBadge(status: u.status),
+///     ),
+///   ],
+///   actions: [
+///     DataGridAction(
+///       icon: Icons.edit,
+///       label: 'Edit',
+///       onTap: (user) async => editUser(user),
+///     ),
+///     DataGridAction(
+///       icon: Icons.delete,
+///       label: 'Delete',
+///       onTap: (user) async => deleteUser(user),
+///       destructive: true,
+///       requiresConfirmation: true,
+///     ),
+///   ],
+///   rowsSelectable: true,
+///   enableSearch: true,
+/// );
+///
+/// // Create the provider
+/// final usersGridProvider = dataGridProvider<User>(
+///   source: usersSource,
+///   config: usersConfig,
+///   idSelector: (u) => u.id,
+/// );
+///
+/// // Use in widget
+/// DataGrid<User>(
+///   provider: usersGridProvider,
+///   config: usersConfig,
+///   idSelector: (u) => u.id,
+/// )
+/// ```
+library;
+
+export 'data_grid.dart';
+export 'data_grid_action.dart';
+export 'data_grid_column.dart';
+export 'data_grid_config.dart';
+export 'data_grid_provider.dart';
+export 'data_grid_source.dart';
+export 'data_grid_state.dart';
+export 'widgets/data_grid_empty_state.dart';