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>

lib/cortex/entity-extractor.ts

@@ -123,6 +123,14 @@ export function extractEntities(
       return extractCancelAppointmentEntities(trimmedInput, input, referenceDate);
     case 'reschedule_appointment':
       return extractRescheduleAppointmentEntities(trimmedInput, input, referenceDate);
+    // Intake intents (MVP)
+    case 'intake_navigeer':
+      return extractIntakeNavigeerEntities(trimmedInput);
+    case 'intake_status':
+    case 'risico_query':
+    case 'diagnose_query':
+      // These intents use patient context from store, no entity extraction needed
+      return entities;
     default:
       return entities;
   }
@@ -665,3 +673,83 @@ function extractDateLabel(input: string): DateRange['label'] {
   if (normalized.includes('volgende week')) return 'volgende week';
   return 'custom';
 }
+
+// ============================================================================
+// Intake Entity Extraction (MVP)
+// ============================================================================
+
+/**
+ * Intake tab targets for navigation.
+ */
+export type IntakeTab =
+  | 'contacts'
+  | 'kindcheck'
+  | 'risk'
+  | 'anamnese'
+  | 'examination'
+  | 'rom'
+  | 'diagnosis'
+  | 'behandeladvies';
+
+/**
+ * Mapping of keywords to intake tabs.
+ */
+const INTAKE_TAB_KEYWORDS: Record<string, IntakeTab> = {
+  // Risk
+  'risico': 'risk',
+  'risicotaxatie': 'risk',
+  'risicos': 'risk',
+  // Diagnosis
+  'diagnose': 'diagnosis',
+  'diagnoses': 'diagnosis',
+  'dsm': 'diagnosis',
+  // Anamnese
+  'anamnese': 'anamnese',
+  'voorgeschiedenis': 'anamnese',
+  'geschiedenis': 'anamnese',
+  // Contacts
+  'contact': 'contacts',
+  'contacten': 'contacts',
+  'contactmomenten': 'contacts',
+  // Kindcheck
+  'kindcheck': 'kindcheck',
+  'kinderen': 'kindcheck',
+  // Examination
+  'onderzoek': 'examination',
+  'psychiatrisch': 'examination',
+  // ROM
+  'rom': 'rom',
+  'meetinstrumenten': 'rom',
+  'vragenlijst': 'rom',
+  'vragenlijsten': 'rom',
+  // Behandeladvies
+  'behandeladvies': 'behandeladvies',
+  'advies': 'behandeladvies',
+  'behandeling': 'behandeladvies',
+  'samenvatting': 'behandeladvies',
+  // Doelen (maps to behandeladvies as it's part of that tab in MVP)
+  'doelen': 'behandeladvies',
+  'doelstellingen': 'behandeladvies',
+  // Netwerk (maps to contacts as it's closest in MVP)
+  'netwerk': 'contacts',
+  'sociaal': 'contacts',
+};
+
+/**
+ * Extract entities for intake_navigeer intent.
+ * Determines which intake tab to navigate to.
+ */
+function extractIntakeNavigeerEntities(lowerInput: string): ExtractedEntities & { navigationTarget?: IntakeTab } {
+  const words = lowerInput.split(/\s+/);
+
+  // Find the navigation target
+  for (const word of words) {
+    const target = INTAKE_TAB_KEYWORDS[word];
+    if (target) {
+      return { navigationTarget: target } as ExtractedEntities & { navigationTarget?: IntakeTab };
+    }
+  }
+
+  // Default to risk (most common navigation target in intake context)
+  return { navigationTarget: 'risk' } as ExtractedEntities & { navigationTarget?: IntakeTab };
+}