feat(cortex): add Intake Blocks MVP for voice/text commands

Adds 4 new intents for intake workflow:
- intake_status: shows completion percentage and section checklist
- intake_navigeer: navigation to specific intake tabs
- risico_query: displays risk assessments with severity indicators
- diagnose_query: shows primary/secondary diagnoses

New components:
- IntakeStatusBlock, RisicoBlock, DiagnoseBlock
- Shared block components (BlockLoading, BlockError, BlockEmpty, BlockSection, BlockItem, BlockFooter)
- useBlockData and useIntakeContext hooks

New API routes:
- GET /api/cortex/intake/status
- GET /api/cortex/intake/risico
- GET /api/cortex/intake/diagnose

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

components/cortex/blocks/zoeken-block.tsx

@@ -19,13 +19,13 @@ import { Label } from '@/components/ui/label';
 import { Search, User } from 'lucide-react';
 
 // Use extracted hooks and components (DRY)
-import { usePatientSearch } from '@/lib/cortex/hooks/use-patient-search';
-import { usePatientSelection } from '@/lib/cortex/hooks/use-patient-selection';
+import { usePatientSearch, usePatientSelection } from '@/lib/cortex/hooks';
 import {
   PatientListItem,
   PatientListEmpty,
   PatientListLoading,
-} from '@/components/cortex/shared/patient-list-item';
+  BlockEmpty,
+} from '@/components/cortex/shared';
 
 interface ZoekenBlockProps {
   prefill?: BlockPrefillData;
@@ -116,10 +116,10 @@ export function ZoekenBlock({ prefill }: ZoekenBlockProps) {
 
         {/* Empty State - waiting for input */}
         {!showResults && (
-          <div className="flex flex-col items-center justify-center py-8 text-slate-400">
-            <User className="h-8 w-8 mb-2 opacity-50" />
-            <p className="text-sm">Typ minimaal 2 karakters om te zoeken</p>
-          </div>
+          <BlockEmpty
+            icon={User}
+            message="Typ minimaal 2 karakters om te zoeken"
+          />
         )}
       </div>
     </BlockContainer>