feat: LeadVault - zentrale Lead-Datenbank mit CRM-Funktionen

- Prisma-Schema: Lead + LeadEvent Modelle (Migration 20260320)
- lib/services/leadVault.ts: sinkLeadsToVault mit Deduplizierung
- Auto-Sync: alle 4 Pipelines schreiben Leads in LeadVault
- GET /api/leads: Filter, Sortierung, Pagination (Server-side)
- PATCH/DELETE /api/leads/[id]: Status, Priorität, Tags, Notizen
- POST /api/leads/bulk: Bulk-Aktionen für mehrere Leads
- GET /api/leads/stats: Statistiken + 7-Tage-Sparkline
- POST /api/leads/quick-serp: SERP-Capture ohne Enrichment
- GET /api/leads/export: CSV-Export mit allen Feldern
- app/leadvault/page.tsx: vollständige UI mit Stats, Quick SERP,
  Filter-Leiste, sortierbare Tabelle, Bulk-Aktionen, Side Panel
- Sidebar: LeadVault-Eintrag mit Live-Badge (neue Leads)

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

app/api/jobs/serp-enrich/route.ts

@@ -4,6 +4,7 @@ import { getApiKey } from "@/lib/utils/apiKey";
 import { isSocialOrDirectory } from "@/lib/utils/domains";
 import { runGoogleSerpScraper, pollRunStatus, fetchDatasetItems } from "@/lib/services/apify";
 import { bulkSearchDomains, type DecisionMakerCategory } from "@/lib/services/anymailfinder";
+import { sinkLeadsToVault } from "@/lib/services/leadVault";
 
 export async function POST(req: NextRequest) {
   try {
@@ -137,6 +138,29 @@ async function runSerpEnrich(
       where: { id: jobId },
       data: { status: "complete", emailsFound, totalLeads: enrichResults.length },
     });
+
+    // Sync to LeadVault
+    await sinkLeadsToVault(
+      enrichResults.map(r => {
+        const serpData = serpMap.get(r.domain || "");
+        return {
+          domain: r.domain || null,
+          companyName: serpData?.title || null,
+          contactName: r.person_full_name || null,
+          contactTitle: r.person_job_title || null,
+          email: r.email || null,
+          linkedinUrl: r.person_linkedin_url || null,
+          emailConfidence: r.valid_email ? 1.0 : r.email_status === "risky" ? 0.5 : 0,
+          serpTitle: serpData?.title || null,
+          serpSnippet: serpData?.description || null,
+          serpRank: serpData?.position ?? null,
+          serpUrl: serpData?.url || null,
+        };
+      }),
+      "serp",
+      params.query,
+      jobId,
+    );
   } catch (err) {
     const message = err instanceof Error ? err.message : String(err);
     await prisma.job.update({