Initial commit: Telegram Management System

Full-stack web application for Telegram management
- Frontend: Vue 3 + Vben Admin
- Backend: NestJS
- Features: User management, group broadcast, statistics

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

marketing-agent/services/billing-service/package.json

@@ -0,0 +1,51 @@
+{
+  "name": "billing-service",
+  "version": "1.0.0",
+  "description": "Billing and payment service for Marketing Agent",
+  "type": "module",
+  "main": "src/server.js",
+  "scripts": {
+    "start": "node src/server.js",
+    "dev": "nodemon src/server.js",
+    "test": "jest",
+    "test:watch": "jest --watch",
+    "lint": "eslint src/"
+  },
+  "dependencies": {
+    "cors": "^2.8.5",
+    "dotenv": "^16.3.1",
+    "exceljs": "^4.4.0",
+    "express": "^4.18.2",
+    "express-rate-limit": "^7.1.5",
+    "express-validator": "^7.0.1",
+    "helmet": "^7.1.0",
+    "json2csv": "^6.0.0",
+    "jsonwebtoken": "^9.0.2",
+    "mongoose": "^8.0.3",
+    "pdfkit": "^0.14.0",
+    "redis": "^4.6.12",
+    "stripe": "^14.10.0",
+    "winston": "^3.11.0"
+  },
+  "devDependencies": {
+    "@types/jest": "^29.5.11",
+    "eslint": "^8.56.0",
+    "jest": "^29.7.0",
+    "nodemon": "^3.0.2",
+    "supertest": "^6.3.3"
+  },
+  "jest": {
+    "testEnvironment": "node",
+    "transform": {},
+    "extensionsToTreatAsEsm": [".js"],
+    "moduleNameMapper": {
+      "^(\\.{1,2}/.*)\\.js$": "$1"
+    },
+    "testMatch": [
+      "**/tests/**/*.test.js"
+    ]
+  },
+  "engines": {
+    "node": ">=18.0.0"
+  }
+}