feat: move patient info to top header with React Context

Refactored patient display from separate ClientHeader to integrated EPDHeader.

Architecture changes:
- Implemented React Context pattern for patient data sharing
- Created PatientContext with useState + setPatient for dynamic updates
- Created useSetPatient hook for patient injection from nested layouts
- Created EPDLayoutClient wrapper with PatientProvider
- Context flow: EPDLayout → EPDLayoutClient → EPDHeader (consumer)

UI improvements:
- Removed "Mini-ECD" logo from header
- Left-aligned patient info: name + status + John Doe indicator
- Added geboortedatum (dd-mm-yyyy Dutch format)
- Added BSN extraction from FHIR identifiers
- Compact layout: Patient details | Timestamp | Actions ⋮ | Search
- Actions dropdown with "Nieuwe rapportage" (expandable)

Cleanup:
- Deleted ClientHeader component (141 lines duplicate code)
- Simplified PatientLayoutClient (only useSetPatient hook)
- Single source of truth for patient display

Result: Clean context-based architecture, improved UX, -141 LOC

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

app/epd/patients/[id]/components/patient-layout-client.tsx

@@ -1,9 +1,8 @@
 'use client';
 
-import { useMemo } from 'react';
 import type { ReactNode } from 'react';
 import type { FHIRPatient } from '@/lib/fhir';
-import { ClientHeader } from './client-header';
+import { useSetPatient } from '@/app/epd/components/patient-context';
 
 interface PatientLayoutClientProps {
   patient: FHIRPatient;
@@ -11,22 +10,12 @@ interface PatientLayoutClientProps {
   children: ReactNode;
 }
 
-export function PatientLayoutClient({ patient, patientId, children }: PatientLayoutClientProps) {
-  const patientName = useMemo(() => {
-    const name = patient.name?.[0];
-    if (!name) return 'deze patiënt';
-    return [
-      ...(name.prefix || []),
-      ...(name.given || []),
-      name.family,
-    ]
-      .filter(Boolean)
-      .join(' ');
-  }, [patient]);
+export function PatientLayoutClient({ patient, children }: PatientLayoutClientProps) {
+  // Inject patient data into the context (provided by parent EPDLayoutClient)
+  useSetPatient(patient);
 
   return (
     <div className="flex h-full flex-1 flex-col bg-white">
-      <ClientHeader patient={patient} focusElementId="rapportage-composer" />
       <div className="flex-1 overflow-auto bg-slate-50">{children}</div>
     </div>
   );