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>

lib/utils/encryption.ts

@@ -0,0 +1,16 @@
+import CryptoJS from "crypto-js";
+
+const SECRET = process.env.APP_ENCRYPTION_SECRET || "leadflow-default-secret-key-32ch";
+
+export function encrypt(text: string): string {
+  return CryptoJS.AES.encrypt(text, SECRET).toString();
+}
+
+export function decrypt(ciphertext: string): string {
+  try {
+    const bytes = CryptoJS.AES.decrypt(ciphertext, SECRET);
+    return bytes.toString(CryptoJS.enc.Utf8);
+  } catch {
+    return "";
+  }
+}