refactor: Unified Inbox aus Core entfernt (nach Lehrer migriert)

- Mail-Seite, API-Route, Kommunikation-Kategorie entfernt
- Screen-Flow: Mail-Node und Kommunikation-Legende entfernt

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

admin-core/app/(admin)/development/screen-flow/page.tsx

@@ -13,10 +13,9 @@ import ReactFlow, {
 } from 'reactflow'
 import 'reactflow/dist/style.css'
 
-type CategoryFilter = 'all' | 'communication' | 'infrastructure' | 'development' | 'meta'
+type CategoryFilter = 'all' | 'infrastructure' | 'development' | 'meta'
 
 const categoryColors: Record<string, string> = {
-  communication: '#22c55e',
   infrastructure: '#f97316',
   development: '#64748b',
   meta: '#0ea5e9',
@@ -27,9 +26,6 @@ const initialNodes: Node[] = [
   { id: 'role-select', position: { x: 400, y: 0 }, data: { label: 'Rollenauswahl', category: 'meta' }, style: { background: '#e0f2fe', border: '2px solid #0ea5e9', borderRadius: '12px', padding: '10px 16px' } },
   { id: 'dashboard', position: { x: 400, y: 100 }, data: { label: 'Dashboard', category: 'meta' }, style: { background: '#e0f2fe', border: '2px solid #0ea5e9', borderRadius: '12px', padding: '10px 16px' } },
 
-  // Communication (Green)
-  { id: 'mail', position: { x: 50, y: 250 }, data: { label: 'Unified Inbox', category: 'communication' }, style: { background: '#dcfce7', border: '2px solid #22c55e', borderRadius: '12px', padding: '10px 16px' } },
-
   // Infrastructure (Orange)
   { id: 'gpu', position: { x: 300, y: 250 }, data: { label: 'GPU Infrastruktur', category: 'infrastructure' }, style: { background: '#ffedd5', border: '2px solid #f97316', borderRadius: '12px', padding: '10px 16px' } },
   { id: 'middleware', position: { x: 300, y: 350 }, data: { label: 'Middleware', category: 'infrastructure' }, style: { background: '#ffedd5', border: '2px solid #f97316', borderRadius: '12px', padding: '10px 16px' } },
@@ -49,7 +45,6 @@ const initialEdges: Edge[] = [
   { id: 'e-role-dash', source: 'role-select', target: 'dashboard', markerEnd: { type: MarkerType.ArrowClosed }, style: { stroke: '#0ea5e9' } },
 
   // Dashboard to categories
-  { id: 'e-dash-mail', source: 'dashboard', target: 'mail', markerEnd: { type: MarkerType.ArrowClosed }, style: { stroke: '#22c55e' } },
   { id: 'e-dash-gpu', source: 'dashboard', target: 'gpu', markerEnd: { type: MarkerType.ArrowClosed }, style: { stroke: '#f97316' } },
   { id: 'e-dash-cicd', source: 'dashboard', target: 'ci-cd', markerEnd: { type: MarkerType.ArrowClosed }, style: { stroke: '#f97316' } },
   { id: 'e-dash-docs', source: 'dashboard', target: 'docs', markerEnd: { type: MarkerType.ArrowClosed }, style: { stroke: '#64748b' } },
@@ -83,7 +78,6 @@ export default function ScreenFlowPage() {
 
   const filters: { id: CategoryFilter; label: string; color: string }[] = [
     { id: 'all', label: 'Alle', color: '#0ea5e9' },
-    { id: 'communication', label: 'Kommunikation', color: '#22c55e' },
     { id: 'infrastructure', label: 'Infrastruktur', color: '#f97316' },
     { id: 'development', label: 'Entwicklung', color: '#64748b' },
   ]
@@ -149,10 +143,6 @@ export default function ScreenFlowPage() {
 
       {/* Legend */}
       <div className="mt-4 flex items-center gap-6 text-sm text-slate-500">
-        <div className="flex items-center gap-2">
-          <div className="w-4 h-4 rounded bg-green-100 border-2 border-green-500" />
-          <span>Kommunikation (4)</span>
-        </div>
         <div className="flex items-center gap-2">
           <div className="w-4 h-4 rounded bg-orange-100 border-2 border-orange-500" />
           <span>Infrastruktur (6)</span>