fix(agents): Frontend-Proxy ruft korrekten Backend-Pfad auf

Backend registriert specialist-agent-Routes über den compliance-Router,
prefix wird /api/compliance/specialist-agent/* (statt /api/v1/...).
Frontend-Proxy hat auf /api/v1/specialist-agent/* gezeigt — 404.

Verifiziert auf macmini:
  curl http://localhost:8002/api/compliance/specialist-agent/agents
  → 200 {"agents": [{"agent_id": "impressum", ...},
                     {"agent_id": "cookie_policy", ...}]}

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

admin-compliance/app/api/sdk/v1/specialist-agent/[[...path]]/route.ts

@@ -16,7 +16,7 @@ async function proxyRequest(
 ) {
   const pathStr = pathSegments?.join('/') || ''
   const searchParams = request.nextUrl.searchParams.toString()
-  const basePath = `${BACKEND_URL}/api/v1/specialist-agent`
+  const basePath = `${BACKEND_URL}/api/compliance/specialist-agent`
   const url = pathStr
     ? `${basePath}/${pathStr}${searchParams ? `?${searchParams}` : ''}`
     : `${basePath}${searchParams ? `?${searchParams}` : ''}`