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/nginx/generate_multi_test.go

@@ -0,0 +1,51 @@
+package nginx
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/fonu/fonu/internal/config"
+	"github.com/fonu/fonu/internal/proxy"
+)
+
+func TestGenerateMultiHostCustomPort(t *testing.T) {
+	cfg := config.Config{
+		DataDir:        t.TempDir(),
+		NginxPIDFile:   t.TempDir() + "/nginx.pid",
+		NginxMimeTypes: t.TempDir() + "/mime.types",
+	}
+	port6893 := 6893
+	rules := []proxy.Rule{{
+		ID:           1,
+		Upstream:     "http://192.168.8.3:6893",
+		ListenPort:   8011,
+		ListenIPv4:   true,
+		ListenIPv6:   true,
+		Hosts: []proxy.Host{
+			{Hostname: "1.example.com"},
+			{Hostname: "2.example.com"},
+			{Hostname: "example.org"},
+			{Hostname: "example.com", ListenPort: &port6893},
+		},
+		HTTPSEnabled: false,
+		HTTPRedirect: false,
+		Enabled:      true,
+	}}
+
+	content, err := Generate(cfg, rules, nil, GenerateOptions{})
+	if err != nil {
+		t.Fatalf("generate failed: %v", err)
+	}
+	for _, want := range []string{
+		"listen 8011;",
+		"listen [::]:8011;",
+		"server_name 1.example.com 2.example.com example.org",
+		"listen 6893;",
+		"listen [::]:6893;",
+		"server_name example.com",
+	} {
+		if !strings.Contains(content, want) {
+			t.Fatalf("missing %q in generated config:\n%s", want, content)
+		}
+	}
+}