feat: 更新后端服务

- agent_handler.go: 新增agent管理接口
- agent_service.go: 扩展agent服务逻辑
- skill_handler.go: 更新skill接口
- chat_service.go: 更新chat服务
- model相关: 新增model仓库和服务
- main.go: 更新路由配置

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/internal/handler/skill_handler.go

@@ -245,7 +245,7 @@ func (h *SkillHandler) Create(c *gin.Context) {
 		SkillType: skillType,
 		SkillDesc: skillDesc,
 		Path:      filepath.Join(skillPath, "SKILL.md"),
-		Status:    "active",
+		Status:    1,
 	}
 
 	// 记录创建者
@@ -386,7 +386,7 @@ func (h *SkillHandler) Update(c *gin.Context) {
 	skillName := req.SkillName
 	skillDesc := req.SkillDesc
 	skillType := req.SkillType
-	status := req.Status
+	var status int
 
 	if skillName == "" {
 		skillName = existingSkill.SkillName
@@ -397,8 +397,18 @@ func (h *SkillHandler) Update(c *gin.Context) {
 	if skillType == "" {
 		skillType = existingSkill.SkillType
 	}
-	if status == "" {
+	// 处理 status：如果是空字符串则使用现有值，否则转换为整数
+	if req.Status == "" {
 		status = existingSkill.Status
+	} else {
+		// 支持传入数字或字符串
+		if req.Status == "1" || req.Status == "active" {
+			status = 1
+		} else if req.Status == "0" || req.Status == "inactive" {
+			status = 0
+		} else {
+			status = existingSkill.Status
+		}
 	}
 
 	// 获取项目根目录