feat(agent): Cookie-Result-View + Check-Historie aus Snapshots

Snapshot-getriebene Result-Views, entkoppelt vom Live-Check:
- CookieResultView: laedt cmp_vendors aus einem Snapshot (kein Re-Crawl),
  KPIs (Anbieter/Cookies/Marketing/Drittland) + Empfaenger-Gruppen
  (Eigene/AVV/Joint-Controller) + aufklappbare Vendor->Cookie-Tabelle.
- Historie (/sdk/agent/snapshots): alle gespeicherten Checks, jederzeit
  oeffnbar (DSB/Mitarbeiter) + Detail-Seite je Snapshot.
- Next.js-Proxys fuer GET /snapshots (Liste) + /snapshots/{id} (einzeln).

BMW-Snapshot 4603d15b: 83 Vendors / 780 Cookies. Library-Abgleich
(cookie_knowledge_db.lookup_cookie) folgt als Phase B.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

admin-compliance/app/api/sdk/v1/agent/snapshots/[snapshotId]/route.ts

@@ -0,0 +1,34 @@
+/**
+ * Snapshot-Proxy
+ * GET /api/sdk/v1/agent/snapshots/{snapshotId}
+ *   → backend /api/compliance/agent/snapshots/{snapshotId}
+ *
+ * Liefert die persistierten Roh-Daten eines Checks (cmp_vendors + Cookies +
+ * banner_result) — Basis für den Cookie-Result-View OHNE Re-Crawl.
+ */
+
+import { NextRequest, NextResponse } from 'next/server'
+
+const BACKEND_URL =
+  process.env.BACKEND_API_URL || process.env.BACKEND_URL ||
+  'http://backend-compliance:8002'
+
+export async function GET(
+  _request: NextRequest,
+  { params }: { params: Promise<{ snapshotId: string }> },
+) {
+  const { snapshotId } = await params
+  try {
+    const response = await fetch(
+      `${BACKEND_URL}/api/compliance/agent/snapshots/${snapshotId}`,
+      { signal: AbortSignal.timeout(60_000) },
+    )
+    const data = await response.json()
+    return NextResponse.json(data, { status: response.status })
+  } catch {
+    return NextResponse.json(
+      { error: 'Snapshot-Laden zum Backend fehlgeschlagen' },
+      { status: 503 },
+    )
+  }
+}

admin-compliance/app/api/sdk/v1/agent/snapshots/route.ts

@@ -0,0 +1,33 @@
+/**
+ * Snapshot-Liste (Historie)
+ * GET /api/sdk/v1/agent/snapshots?domain=&limit=
+ *   → backend /api/compliance/agent/snapshots
+ *
+ * Ohne domain: alle letzten Snapshots (Historie zum Durchklicken).
+ */
+
+import { NextRequest, NextResponse } from 'next/server'
+
+const BACKEND_URL =
+  process.env.BACKEND_API_URL || process.env.BACKEND_URL ||
+  'http://backend-compliance:8002'
+
+export async function GET(request: NextRequest) {
+  const { searchParams } = new URL(request.url)
+  const domain = searchParams.get('domain') || ''
+  const limit = searchParams.get('limit') || '50'
+  try {
+    const response = await fetch(
+      `${BACKEND_URL}/api/compliance/agent/snapshots`
+        + `?domain=${encodeURIComponent(domain)}&limit=${encodeURIComponent(limit)}`,
+      { signal: AbortSignal.timeout(30_000) },
+    )
+    const data = await response.json()
+    return NextResponse.json(data, { status: response.status })
+  } catch {
+    return NextResponse.json(
+      { error: 'Snapshot-Liste zum Backend fehlgeschlagen', snapshots: [] },
+      { status: 503 },
+    )
+  }
+}