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_china_bypass_test.go

@@ -0,0 +1,56 @@
+package nginx
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"github.com/fonu/fonu/internal/config"
+	"github.com/fonu/fonu/internal/proxy"
+)
+
+func TestChinaOnlyBypassGeoWithoutUserWhitelist(t *testing.T) {
+	dir := t.TempDir()
+	if err := os.WriteFile(filepath.Join(dir, "mime.types"), []byte("types { text/html html; }\n"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	cidrPath := filepath.Join(dir, "nginx", "china_cidr.conf")
+	if err := os.MkdirAll(filepath.Dir(cidrPath), 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(cidrPath, []byte("1.0.0.0/8 1;\n"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	cfg := config.Config{
+		DataDir:        dir,
+		NginxPIDFile:   filepath.Join(dir, "nginx.pid"),
+		NginxMimeTypes: filepath.Join(dir, "mime.types"),
+	}
+	rules := []proxy.Rule{{
+		ID:           3,
+		ListenPort:   8080,
+		ListenIPv4:   true,
+		Hosts:        []proxy.Host{{Hostname: "app.example.com"}},
+		Upstream:     "http://127.0.0.1:3000",
+		Enabled:      true,
+		HTTPSEnabled: false,
+		Security:     proxy.SecurityConfig{ChinaOnly: true},
+	}}
+
+	content, err := Generate(cfg, rules, nil, GenerateOptions{ChinaCIDRAvailable: true})
+	if err != nil {
+		t.Fatalf("generate: %v", err)
+	}
+	for _, want := range []string{
+		"geo $fonu_client_ip $fonu_rule_3_china_bypass",
+		"192.168.0.0/16 1;",
+		"10.0.0.0/8 1;",
+		"if ($fonu_rule_3_china_bypass = 1)",
+	} {
+		if !strings.Contains(content, want) {
+			t.Fatalf("missing %q in:\n%s", want, content)
+		}
+	}
+}