chore: 初始提交 Fonu 1.0.2

- 公网反代：Nginx 状态卡片（版本 / 运行状态 / 配置校验 / 端口监听）
- 部署设置第一、二梯队（HTTPS 开关、安全头、限流、连接数、仅中国大陆 IP）
- 隧道检测兼容 frps v0.68 / v0.71（V2 与旧版端点）
- 恢复被清空的 internal/frp/store.go、internal/api/ddns_handler.go、web/src/views/DdnsView.vue

internal/frp-1.0.2/template.go

@@ -0,0 +1,29 @@
+package frp
+
+import "fmt"
+
+// BuildFRPSConfig generates frps.toml for the user's VPS, aligned with Fonu Nginx ports and auth.
+func BuildFRPSConfig(bindPort, httpPort, httpsPort int, token string) string {
+	if bindPort <= 0 {
+		bindPort = 7000
+	}
+	if httpPort <= 0 {
+		httpPort = 80
+	}
+	if httpsPort <= 0 {
+		httpsPort = 443
+	}
+	if token == "" {
+		token = "your-secret-token"
+	}
+	return fmt.Sprintf(`bindAddr = "0.0.0.0"
+bindPort = %d
+
+vhostHTTPPort = %d
+vhostHTTPSPort = %d
+
+[auth]
+method = "token"
+token = "%s"
+`, bindPort, httpPort, httpsPort, token)
+}