feat(deploy): 添加 Gitea 自动部署 Webhook 及配套工具

新增 `/deploy/webhook` 接口，支持 Gitea HMAC 签名校验、指定分支部署、构建并发锁与超时控制
添加前端项目部署脚本 `scripts/deploy_front.sh`，负责拉取代码、安装依赖并执行构建
新增部署相关配置项并更新 `.env.example` 示例配置
更新项目文档说明自动部署的使用约定
补充 `.gitignore` 规则忽略证书和 PEM 格式文件

app/main.py

@@ -2,7 +2,7 @@ from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 
 from app.database import lifespan
-from app.routers import auth, orders, payments, products, rituals, temples, todos, uploads, users
+from app.routers import auth, deploy, orders, payments, products, rituals, temples, todos, uploads, users
 
 
 app = FastAPI(
@@ -43,3 +43,4 @@ app.include_router(orders.router)
 app.include_router(payments.router)
 app.include_router(rituals.router)
 app.include_router(uploads.router)
+app.include_router(deploy.router)