feat(cloudflared): 增加版本检测与显示功能

- 更新 cloudflared.go，支持获取 cloudflared 的版本信息并在状态中展示。
- 添加解析版本输出的逻辑，根据命令行结果提取版本号并显示。
- 更新 Cloudflare Tunnel 文档，说明版本查询及相关安装指引链接。
- 设置页面中新增 cloudflared 版本显示内容，增强用户操作体验。
- 补充解析版本号功能的单元测试，提升代码可靠性。

Author: ZeroDeng01

docs/features/cloudflare-tunnel.md

@@ -91,9 +91,9 @@ winget install --id Cloudflare.cloudflared
 cloudflared version
 ```
 
-也可以到 Cloudflare 官方下载页或 GitHub Releases 下载 Windows 安装包 / 可执行文件：
+也可以到 Cloudflare 官方下载页或 GitHub Releases 下载 Windows 可执行文件：
 
-- [Cloudflare Downloads](https://developers.cloudflare.com/cloudflare-one/connections/connect-networks/downloads/)
+- [Cloudflare Downloads](https://developers.cloudflare.com/tunnel/downloads/)
 - [cloudflared Releases](https://github.com/cloudflare/cloudflared/releases)
 
 如果你下载的是单个 `cloudflared.exe`，请把它所在目录加入系统 `PATH`，然后重新打开终端验证：
@@ -130,6 +130,7 @@ cloudflared version
 echo 'deb [signed-by=/usr/share/keyrings/cloudflare-main.gpg] https://pkg.cloudflare.com/cloudflared noble main' | sudo tee /etc/apt/sources.list.d/cloudflared.list
 sudo apt-get update
 sudo apt-get install cloudflared
+cloudflared version
 ```
 
 ### RHEL / CentOS / Rocky Linux / AlmaLinux / Fedora / Amazon Linux
@@ -209,7 +210,7 @@ cloudflared version
 > [!TIP]
 > SublinkPro 不需要你运行 `cloudflared service install`。你只需要安装 `cloudflared` 命令，然后把 Cloudflare 页面里安装命令最后一段 token 粘贴到 SublinkPro 页面。SublinkPro 会托管 `cloudflared` 进程的启动和停止。
 
-官方下载页：[Cloudflare Downloads](https://developers.cloudflare.com/cloudflare-one/connections/connect-networks/downloads/)。
+官方下载页：[Cloudflare Downloads](https://developers.cloudflare.com/tunnel/downloads/)。
 
 ---
 

services/cloudflared/cloudflared.go

@@ -34,6 +34,7 @@ type Config struct {
 type Status struct {
 	Installed    bool   `json:"installed"`
 	Path         string `json:"path"`
+	Version      string `json:"version"`
 	Running      bool   `json:"running"`
 	Enabled      bool   `json:"enabled"`
 	HasToken     bool   `json:"hasToken"`
@@ -121,10 +122,15 @@ func AutoStart() {
 // Status 返回当前 cloudflared 状态。
 func (m *Manager) Status() Status {
 	path, installed := lookupCloudflared()
+	version := ""
+	if installed {
+		version = cloudflaredVersion(path)
+	}
 	config, err := LoadConfig()
 	status := Status{
 		Installed:    installed,
 		Path:         path,
+		Version:      version,
 		CommandLabel: "cloudflared tunnel --no-autoupdate run",
 	}
 	if err == nil {
@@ -362,6 +368,31 @@ func lookupCloudflared() (string, bool) {
 	return path, true
 }
 
+func cloudflaredVersion(path string) string {
+	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
+	defer cancel()
+
+	output, err := exec.CommandContext(ctx, path, "version").CombinedOutput()
+	if err != nil {
+		return ""
+	}
+	return parseVersionOutput(string(output))
+}
+
+func parseVersionOutput(output string) string {
+	line := strings.TrimSpace(output)
+	if idx := strings.IndexAny(line, "\r\n"); idx >= 0 {
+		line = strings.TrimSpace(line[:idx])
+	}
+	fields := strings.Fields(line)
+	for i, field := range fields {
+		if strings.EqualFold(field, "version") && i+1 < len(fields) {
+			return fields[i+1]
+		}
+	}
+	return line
+}
+
 func settingValue(key string) string {
 	value, _ := models.GetSetting(key)
 	return strings.TrimSpace(value)

services/cloudflared/cloudflared_test.go

@@ -52,3 +52,23 @@ func TestRedactAssignment(t *testing.T) {
 		t.Fatalf("redacted message = %q, want %q", got, want)
 	}
 }
+
+func TestParseVersionOutput(t *testing.T) {
+	tests := []struct {
+		name   string
+		output string
+		want   string
+	}{
+		{name: "standard output", output: "cloudflared version 2026.5.0 (built 2026-05-01)\n", want: "2026.5.0"},
+		{name: "full version line fallback", output: "cloudflared dev-build\nextra", want: "cloudflared dev-build"},
+		{name: "empty", output: "  ", want: ""},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := parseVersionOutput(tt.output); got != tt.want {
+				t.Fatalf("parseVersionOutput() = %q, want %q", got, tt.want)
+			}
+		})
+	}
+}