sync: ingestion improvements from private repo

- Fixed dimension auto-assignment (locked dimensions now properly assigned)
- Added description field as grounding context for AI
- Updated embedding format: Title → Description → Content → Dimensions
- Description-weighted search (5x boost)
- Bug fixes: extraction tool dimension display, DimensionSearchModal closing
- Removed quickLink tool (use Quick Link workflow instead)
- Added regenerate-description API endpoint

app/api/quick-add/route.ts

@@ -4,7 +4,7 @@ import { enqueueQuickAdd, QuickAddMode } from '@/services/agents/quickAdd';
 export async function POST(request: NextRequest) {
   try {
     const body = await request.json();
-    const { input, mode } = body as { input?: unknown; mode?: unknown };
+    const { input, mode, description } = body as { input?: unknown; mode?: unknown; description?: unknown };
 
     if (typeof input !== 'string' || input.trim().length === 0) {
       return NextResponse.json(
@@ -16,9 +16,13 @@ export async function POST(request: NextRequest) {
     const normalizedMode: QuickAddMode | undefined =
       mode === 'link' || mode === 'note' || mode === 'chat' ? mode : undefined;
 
+    const normalizedDescription: string | undefined =
+      typeof description === 'string' && description.trim() ? description.trim() : undefined;
+
     const delegation = await enqueueQuickAdd({
       rawInput: input.trim(),
       mode: normalizedMode,
+      description: normalizedDescription,
     });
 
     return NextResponse.json({ success: true, delegation });