Initial commit: LeadFlow lead generation platform

Full-stack Next.js 16 app with three scraping pipelines:
- AirScale CSV → Anymailfinder Bulk Decision Maker search
- LinkedIn Sales Navigator → Vayne → Anymailfinder email enrichment
- Apify Google SERP → domain extraction → Anymailfinder bulk enrichment

Includes Docker multi-stage build + docker-compose for Coolify deployment.

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

app/api/credentials/test/route.ts

@@ -0,0 +1,50 @@
+import { NextRequest, NextResponse } from "next/server";
+import { prisma } from "@/lib/db";
+import { decrypt } from "@/lib/utils/encryption";
+import axios from "axios";
+
+export async function GET(req: NextRequest) {
+  const service = req.nextUrl.searchParams.get("service");
+  if (!service) return NextResponse.json({ ok: false, error: "Missing service" }, { status: 400 });
+
+  const cred = await prisma.apiCredential.findUnique({ where: { service } });
+  if (!cred?.value) return NextResponse.json({ ok: false, error: "Not configured" });
+
+  const key = decrypt(cred.value);
+  if (!key) return NextResponse.json({ ok: false, error: "Empty key" });
+
+  try {
+    switch (service) {
+      case "anymailfinder": {
+        // Test with a known domain — no credits charged if email not found
+        const res = await axios.post(
+          "https://api.anymailfinder.com/v5.1/find-email/decision-maker",
+          { domain: "microsoft.com", decision_maker_category: ["ceo"] },
+          { headers: { Authorization: key }, timeout: 15000 }
+        );
+        return NextResponse.json({ ok: res.status === 200 });
+      }
+      case "apify": {
+        const res = await axios.get("https://api.apify.com/v2/users/me", {
+          params: { token: key },
+          timeout: 10000,
+        });
+        return NextResponse.json({ ok: res.status === 200 });
+      }
+      case "vayne": {
+        const res = await axios.get("https://www.vayne.io/api/credits", {
+          headers: { Authorization: `Bearer ${key}` },
+          timeout: 10000,
+        });
+        return NextResponse.json({ ok: res.status === 200 });
+      }
+      default:
+        return NextResponse.json({ ok: false, error: "Unknown service" });
+    }
+  } catch (err) {
+    const status = (err as { response?: { status?: number } })?.response?.status;
+    // 402 Payment Required = valid key but no credits → still connected
+    if (status === 402) return NextResponse.json({ ok: true });
+    return NextResponse.json({ ok: false });
+  }
+}