modify: auth插件拆分，将token签发部分交给网关

workers/auth_oauth/config.toml

@@ -0,0 +1,34 @@
+# ====== 插件注册信息（控制加载方式） ======
+[workers]
+type = "auth_oauth"
+module = "plugins.auth_oauth"
+factory = "create_workers"
+cleanup = "cleanup"
+count = 1
+# 身份源插件持有签名密钥的使用方（issue_token），走 inline 与网关同信任域；
+# external 部署前需先解决密钥下发问题（见插件 README 安全说明）
+load_mode = "inline"
+
+[worker]
+name = "auth_oauth"
+version = "0.1.0"
+description = "第三方授权登录示例（GitHub OAuth / 手机验证码）"
+config_version = "1.0"
+defaults = { method = "GET", ttl = 30, timeout = 10.0, auth_required = false, cacheable = false }
+
+[worker.registration]
+router_prefix = "/auth/oauth"
+tags = ["auth_oauth"]
+
+# ====== Worker 运行时配置 ======
+[workers.config]
+data_dir = "./data"
+# 演示模式：验证码随响应返回（无短信通道的本地演示）。生产必须置 false 并接真实短信通道
+return_otp_in_response = true
+
+# GitHub OAuth App 凭据（https://github.com/settings/developers 创建）
+[workers.config.github]
+client_id = "your-github-oauth-client-id"
+client_secret = "your-github-oauth-client-secret"
+redirect_uri = "http://localhost:5173/auth/oauth/github/callback"
+scope = "read:user user:email"