feat: Add Nanaxe server with Docker, GitHub Actions CI/CD, and auto-deployment

- Add complete server infrastructure with Gitea, API, PostgreSQL
- Implement Obsidian-compatible markdown mindmap converter
- Add Flutter service for server synchronization
- Configure GitHub Actions for automated build and deploy
- Add production docker-compose with health checks
- Include VPS setup and deployment scripts
- Add comprehensive deployment documentation

server/api/package.json

@@ -0,0 +1,34 @@
+{
+  "name": "nanaxe-api-server",
+  "version": "1.0.0",
+  "description": "API server for Nanaxe CRM mindmap synchronization",
+  "main": "src/index.js",
+  "scripts": {
+    "start": "node src/index.js",
+    "dev": "nodemon src/index.js",
+    "test": "jest"
+  },
+  "dependencies": {
+    "express": "^4.18.2",
+    "cors": "^2.8.5",
+    "helmet": "^7.1.0",
+    "morgan": "^1.10.0",
+    "jsonwebtoken": "^9.0.2",
+    "bcryptjs": "^2.4.3",
+    "axios": "^1.6.2",
+    "simple-git": "^3.21.0",
+    "fs-extra": "^11.2.0",
+    "uuid": "^9.0.1",
+    "dotenv": "^16.3.1",
+    "express-rate-limit": "^7.1.5",
+    "multer": "^1.4.5-lts.1",
+    "yaml": "^2.3.4"
+  },
+  "devDependencies": {
+    "nodemon": "^3.0.2",
+    "jest": "^29.7.0"
+  },
+  "engines": {
+    "node": ">=18.0.0"
+  }
+}