feat(2.0): Phase 3 — Memory + MCP

Geteiltes Gedaechtnis: services/memory.py (SQLite/WAL, 5 Kategorien,
Dedupe-Kurator deterministisch), routers/memory.py (CRUD/export/dedupe).
MCP: mcp/mcp_memory.py (Guard-Beschreibungen gegen 14B-Loop) + mcp/mcp_mc.py
NEU (Stack-Management fuer Hermes: list/discover/register/route/restart/
status). Frontend MemoryView (Add/Filter/Suche/Delete/Aufraeumen).

Lokal verifiziert: CRUD + Dedupe (TestClient), MCP-Server syntax-OK,
Frontend-Build + Browser (MemoryView). Docs aktualisiert.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/App.tsx

@@ -6,6 +6,7 @@ import { ModelsView } from "@/views/ModelsView"
 import { RoutingView } from "@/views/RoutingView"
 import { SystemView } from "@/views/SystemView"
 import { ConnectView } from "@/views/ConnectView"
+import { MemoryView } from "@/views/MemoryView"
 import { Placeholder } from "@/views/Placeholder"
 import { api, type Health } from "@/lib/api"
 import { cn } from "@/lib/utils"
@@ -94,7 +95,8 @@ export default function App() {
           {view === "routing" && <RoutingView />}
           {view === "system" && <SystemView />}
           {view === "connect" && <ConnectView />}
-          {!["models", "routing", "system", "connect"].includes(view) && (
+          {view === "memory" && <MemoryView />}
+          {!["models", "routing", "system", "connect", "memory"].includes(view) && (
             <Placeholder title={active.label} hint={active.hint} />
           )}
         </main>