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/shared/block-item.tsx

@@ -0,0 +1,128 @@
+'use client';
+
+/**
+ * BlockItem Component
+ *
+ * List item for use within BlockSection.
+ * Supports title, subtitle, badge, and click handling.
+ *
+ * Epic: E1.S2 - Block Layout
+ */
+
+import { cn } from '@/lib/utils';
+
+// ============================================================================
+// Types
+// ============================================================================
+
+export type BadgeVariant = 'default' | 'success' | 'warning' | 'danger';
+
+interface BlockItemProps {
+  /** Hoofdtekst */
+  title: string;
+  /** Subtekst (datum, auteur, etc.) */
+  subtitle?: string;
+  /** Status badge */
+  badge?: {
+    label: string;
+    variant: BadgeVariant;
+  };
+  /** Klik handler (maakt item klikbaar) */
+  onClick?: () => void;
+  /** Extra CSS classes */
+  className?: string;
+}
+
+// ============================================================================
+// Styling
+// ============================================================================
+
+const BADGE_STYLES: Record<BadgeVariant, string> = {
+  default: 'bg-slate-100 text-slate-700 border-slate-200',
+  success: 'bg-green-50 text-green-700 border-green-200',
+  warning: 'bg-amber-50 text-amber-700 border-amber-200',
+  danger: 'bg-red-50 text-red-700 border-red-200',
+};
+
+// ============================================================================
+// Component
+// ============================================================================
+
+/**
+ * List item for Cortex blocks.
+ * Renders as button when clickable, div otherwise.
+ */
+export function BlockItem({
+  title,
+  subtitle,
+  badge,
+  onClick,
+  className,
+}: BlockItemProps) {
+  const isClickable = Boolean(onClick);
+  const Component = isClickable ? 'button' : 'div';
+
+  return (
+    <Component
+      type={isClickable ? 'button' : undefined}
+      onClick={onClick}
+      className={cn(
+        'flex items-center justify-between p-3 rounded-lg',
+        'bg-slate-50 border border-slate-200',
+        'w-full text-left',
+        isClickable && [
+          'cursor-pointer',
+          'hover:bg-slate-100 hover:border-slate-300',
+          'transition-colors',
+        ],
+        className
+      )}
+    >
+      {/* Content */}
+      <div className="min-w-0 flex-1">
+        <p className="text-sm font-medium text-slate-900 truncate">{title}</p>
+        {subtitle && (
+          <p className="text-xs text-slate-500 mt-0.5 truncate">{subtitle}</p>
+        )}
+      </div>
+
+      {/* Badge */}
+      {badge && (
+        <span
+          className={cn(
+            'ml-3 flex-shrink-0',
+            'px-2 py-0.5 rounded-full',
+            'text-xs font-medium border',
+            BADGE_STYLES[badge.variant]
+          )}
+        >
+          {badge.label}
+        </span>
+      )}
+    </Component>
+  );
+}
+
+// ============================================================================
+// Helper: Get variant from risk level
+// ============================================================================
+
+/**
+ * Maps risk level string to badge variant.
+ * Used for consistent risk display across blocks.
+ */
+export function getRiskBadgeVariant(level: string): BadgeVariant {
+  switch (level.toLowerCase()) {
+    case 'laag':
+      return 'success';
+    case 'gemiddeld':
+    case 'matig':
+      return 'warning';
+    case 'hoog':
+    case 'zeer_hoog':
+    case 'zeer hoog':
+      return 'danger';
+    default:
+      return 'default';
+  }
+}