feat: add demo site config

internal/controllers/settings_controller.go

@@ -37,6 +37,12 @@ func NewSettingsController(userService *services.UserService, loginLogService *s
 
 // ChangePassword 修改密码
 func (sc *SettingsController) ChangePassword(c *gin.Context) {
+	// 演示模式下禁止修改密码
+	if constant.DemoMode {
+		utils.BadRequest(c, "演示模式下不能修改密码")
+		return
+	}
+
 	var req struct {
 		OldPassword string `json:"old_password" binding:"required"`
 		NewPassword string `json:"new_password" binding:"required,min=6"`
@@ -83,6 +89,7 @@ func (sc *SettingsController) GetPublicSiteSettings(c *gin.Context) {
 		constant.KeyTitle:    settings[constant.KeyTitle],
 		constant.KeySubtitle: settings[constant.KeySubtitle],
 		constant.KeyIcon:     settings[constant.KeyIcon],
+		"demo_mode":          constant.DemoMode,
 	})
 }
 

internal/controllers/terminal_controller.go

@@ -72,6 +72,12 @@ func (tc *TerminalController) HandleWebSocket(c *gin.Context) {
 	}
 	defer conn.Close()
 
+	// 演示模式下禁用终端
+	if constant.DemoMode {
+		conn.WriteMessage(websocket.TextMessage, []byte("\r\n\033[1;33m[演示模式] 终端功能已禁用\033[0m\r\n"))
+		return
+	}
+
 	// Windows 使用 pipe 模式，Unix 使用 PTY 模式
 	if runtime.GOOS == "windows" {
 		tc.handlePipeMode(conn)