feat: 初始提交 - Code Server Bridge完整实现

- OAuth认证系统（Gitea + Lua扩展）
- Git自动化操作（本地/SSH远程）
- 实时进度WebSocket推送
- 现代化Tab界面UI
- Cobra CLI命令行（init/version/serve）
- 完整构建系统（Makefile + Taskfile）
- UPX压缩支持（体积减少70%）

internal/http/handlers/ws.go

@@ -0,0 +1,149 @@
+package handlers
+
+import (
+	"encoding/json"
+	"net/http"
+	"sync"
+	"time"
+
+	"github.com/gorilla/websocket"
+)
+
+var upgrader = websocket.Upgrader{
+	CheckOrigin: func(r *http.Request) bool {
+		// 允许所有来源(生产环境应该做更严格的检查)
+		return true
+	},
+}
+
+// ProgressMessage WebSocket进度消息结构
+type ProgressMessage struct {
+	Status  string `json:"status"`  // 状态: checking, cloning, pulling, success, error
+	Message string `json:"message"` // 消息文本
+	Percent int    `json:"percent"` // 进度百分比 (0-100)
+}
+
+// ProgressHub 进度广播中心
+type ProgressHub struct {
+	clients    map[string]*websocket.Conn
+	clientsMux sync.RWMutex
+	broadcast  chan ProgressMessage
+}
+
+var (
+	hub     *ProgressHub
+	hubOnce sync.Once
+)
+
+// GetProgressHub 获取进度广播中心单例
+func GetProgressHub() *ProgressHub {
+	hubOnce.Do(func() {
+		hub = &ProgressHub{
+			clients:   make(map[string]*websocket.Conn),
+			broadcast: make(chan ProgressMessage, 10),
+		}
+		go hub.run()
+	})
+	return hub
+}
+
+// run 运行广播循环
+func (h *ProgressHub) run() {
+	for msg := range h.broadcast {
+		h.clientsMux.RLock()
+		for clientID, conn := range h.clients {
+			err := conn.WriteJSON(msg)
+			if err != nil {
+				// 写入失败,移除客户端
+				conn.Close()
+				h.clientsMux.RUnlock()
+				h.removeClient(clientID)
+				h.clientsMux.RLock()
+			}
+		}
+		h.clientsMux.RUnlock()
+	}
+}
+
+// addClient 添加客户端
+func (h *ProgressHub) addClient(clientID string, conn *websocket.Conn) {
+	h.clientsMux.Lock()
+	defer h.clientsMux.Unlock()
+	h.clients[clientID] = conn
+}
+
+// removeClient 移除客户端
+func (h *ProgressHub) removeClient(clientID string) {
+	h.clientsMux.Lock()
+	defer h.clientsMux.Unlock()
+	delete(h.clients, clientID)
+}
+
+// SendProgress 发送进度消息
+func (h *ProgressHub) SendProgress(msg ProgressMessage) {
+	select {
+	case h.broadcast <- msg:
+	case <-time.After(1 * time.Second):
+		// 超时,丢弃消息
+	}
+}
+
+// GitProgressWS WebSocket处理器
+func GitProgressWS() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		// 升级HTTP连接到WebSocket
+		conn, err := upgrader.Upgrade(w, r, nil)
+		if err != nil {
+			http.Error(w, "Failed to upgrade to WebSocket", http.StatusInternalServerError)
+			return
+		}
+		defer conn.Close()
+
+		// 生成客户端ID
+		clientID := r.RemoteAddr + "-" + time.Now().Format("20060102150405")
+
+		// 添加到hub
+		hub := GetProgressHub()
+		hub.addClient(clientID, conn)
+		defer hub.removeClient(clientID)
+
+		// 发送欢迎消息
+		welcomeMsg := ProgressMessage{
+			Status:  "connected",
+			Message: "WebSocket连接已建立",
+			Percent: 0,
+		}
+		if err := conn.WriteJSON(welcomeMsg); err != nil {
+			return
+		}
+
+		// 保持连接,读取客户端消息(主要用于心跳)
+		for {
+			_, _, err := conn.ReadMessage()
+			if err != nil {
+				// 连接断开
+				break
+			}
+		}
+	}
+}
+
+// SendProgressToClients 辅助函数:向所有客户端发送进度
+func SendProgressToClients(status, message string, percent int) {
+	hub := GetProgressHub()
+	hub.SendProgress(ProgressMessage{
+		Status:  status,
+		Message: message,
+		Percent: percent,
+	})
+}
+
+// SendProgressJSON 辅助函数:发送JSON格式的进度消息
+func SendProgressJSON(w http.ResponseWriter, status, message string, percent int) {
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(ProgressMessage{
+		Status:  status,
+		Message: message,
+		Percent: percent,
+	})
+}