sync: features from private repo (2025-12-24)

Synced from ra-h private repo:
- Collapsible chat panel (Cmd+\)
- FolderViewOverlay with Kanban/Grid/List views
- Updated agent prompts
- Improved executor and quickAdd services
- New views.ts types

Files kept at OS versions (auth/backend deps):
- SettingsModal, RAHChat, useSSEChat
- Delegation tools and wiseRAHExecutor
- openExternalUrl (no Tauri)

Added stub: supabaseTokenRegistry.ts for compatibility

src/types/views.ts

@@ -0,0 +1,45 @@
+// View system types
+
+export type ViewType = 'focus' | 'list' | 'kanban' | 'grid';
+
+export interface ViewFilter {
+  dimension: string;
+  operator: 'includes' | 'excludes';
+}
+
+export interface ViewSort {
+  field: 'title' | 'created_at' | 'updated_at' | 'edge_count';
+  direction: 'asc' | 'desc';
+}
+
+export interface KanbanColumn {
+  id: string;
+  dimension: string;
+  order: number;
+}
+
+export interface ViewConfig {
+  filters: ViewFilter[];
+  filterLogic: 'and' | 'or';
+  sort: ViewSort;
+  // Kanban-specific
+  columns?: KanbanColumn[];
+}
+
+export interface SavedView {
+  id: number;
+  name: string;
+  type: ViewType;
+  config: ViewConfig;
+  is_default: boolean;
+  created_at: string;
+  updated_at: string;
+}
+
+// Default view configuration
+export const DEFAULT_VIEW_CONFIG: ViewConfig = {
+  filters: [],
+  filterLogic: 'and',
+  sort: { field: 'updated_at', direction: 'desc' },
+  columns: []
+};