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-footer.tsx

@@ -0,0 +1,103 @@
+'use client';
+
+/**
+ * BlockFooter Component
+ *
+ * Footer with action buttons for Cortex blocks.
+ * Secondary action on left, primary action on right.
+ *
+ * Epic: E1.S3 - Block Layout
+ */
+
+import type { LucideIcon } from 'lucide-react';
+import { Loader2 } from 'lucide-react';
+import { Button } from '@/components/ui/button';
+import { cn } from '@/lib/utils';
+
+// ============================================================================
+// Types
+// ============================================================================
+
+interface ActionConfig {
+  /** Knop label */
+  label: string;
+  /** Optioneel icoon */
+  icon?: LucideIcon;
+  /** Click handler */
+  onClick: () => void;
+  /** Loading state (alleen voor primary) */
+  loading?: boolean;
+  /** Disabled state */
+  disabled?: boolean;
+}
+
+interface BlockFooterProps {
+  /** Linker actie (ghost button) */
+  secondaryAction?: ActionConfig;
+  /** Rechter actie (solid button) */
+  primaryAction?: ActionConfig;
+  /** Extra CSS classes */
+  className?: string;
+}
+
+// ============================================================================
+// Component
+// ============================================================================
+
+/**
+ * Footer for Cortex blocks with action buttons.
+ * Returns null if no actions provided.
+ */
+export function BlockFooter({
+  secondaryAction,
+  primaryAction,
+  className,
+}: BlockFooterProps) {
+  // Don't render if no actions
+  if (!secondaryAction && !primaryAction) {
+    return null;
+  }
+
+  return (
+    <div
+      className={cn(
+        'flex items-center justify-between',
+        'pt-4 mt-4 border-t border-slate-200',
+        className
+      )}
+    >
+      {/* Secondary Action (left) */}
+      {secondaryAction ? (
+        <Button
+          variant="ghost"
+          size="sm"
+          onClick={secondaryAction.onClick}
+          disabled={secondaryAction.disabled}
+        >
+          {secondaryAction.icon && (
+            <secondaryAction.icon className="h-4 w-4 mr-1.5" />
+          )}
+          {secondaryAction.label}
+        </Button>
+      ) : (
+        <div /> // Spacer
+      )}
+
+      {/* Primary Action (right) */}
+      {primaryAction && (
+        <Button
+          size="sm"
+          onClick={primaryAction.onClick}
+          disabled={primaryAction.loading || primaryAction.disabled}
+        >
+          {primaryAction.loading ? (
+            <Loader2 className="h-4 w-4 mr-1.5 animate-spin" />
+          ) : primaryAction.icon ? (
+            <primaryAction.icon className="h-4 w-4 mr-1.5" />
+          ) : null}
+          {primaryAction.label}
+        </Button>
+      )}
+    </div>
+  );
+}