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/services/agents/quickAdd.ts

@@ -210,7 +210,6 @@ async function handleNoteQuickAdd(rawInput: string, task: string): Promise<strin
     body: JSON.stringify({
       title,
       content,
-      dimensions: [],
       metadata: {
         source: 'quick-add-note',
         refined_at: new Date().toISOString(),
@@ -307,7 +306,6 @@ async function handleChatTranscriptQuickAdd(rawInput: string, task: string): Pro
       title,
       content,
       chunk: transcript,
-      dimensions: [],
       metadata,
     }),
   });