Add streaming support and refactor Chat UI

- Add run_stream method to AgentCore for streaming output
- Add base_url parameter to LLM clients for OpenRouter support
- Add xbot module for new agent implementation
- Refactor Chat.vue into composable + components (ChatHeader, ChatMessage, ChatInput, ChatSidebar, ChatAgentSelector)
- Add ChatStream handler for SSE streaming in Go server
- Add UseXBot field to chat request

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

server/internal/service/skill_service.go

@@ -41,66 +41,75 @@ func (s *SkillService) UpdateSkill(skill *model.Skill) error {
 }
 
 func (s *SkillService) DeleteSkill(id string) error {
-	return s.skillRepo.Delete(id)
+	// 先获取 skill 信息，以便删除本地文件
+	skill, err := s.skillRepo.FindByID(id)
+	if err != nil {
+		return err
+	}
+
+	// 删除数据库记录
+	if err := s.skillRepo.Delete(id); err != nil {
+		return err
+	}
+
+	// 删除本地文件（skill 目录）
+	if skill.Path != "" {
+		// 获取 skill 所在目录（SKILL.md 的父目录）
+		skillDir := filepath.Dir(skill.Path)
+		if err := os.RemoveAll(skillDir); err != nil {
+			log.Printf("[SkillService] Warning: failed to delete skill directory %s: %v", skillDir, err)
+			// 数据库记录已删除，不返回错误
+		} else {
+			log.Printf("[SkillService] Deleted skill directory: %s", skillDir)
+		}
+	}
+
+	return nil
 }
 
 // InitSkills 初始化扫描所有 skills 目录
 func (s *SkillService) InitSkills() error {
-	log.Println("[SkillService] Starting init skills...")
-
 	// 获取项目根目录
 	projectRoot := s.getProjectRoot()
 	if projectRoot == "" {
-		log.Println("[SkillService] Cannot determine project root, skipping skill init")
 		return nil
 	}
 
+	var totalCount int
+
 	// 扫描 system skills: account/admin/skills
 	systemSkillsPath := filepath.Join(projectRoot, "account", "admin", "skills")
 	if _, err := os.Stat(systemSkillsPath); err == nil {
-		log.Printf("[SkillService] Scanning system skills from: %s", systemSkillsPath)
 		systemSkills, err := s.scanSkillsDirectory(systemSkillsPath, "system")
-		if err != nil {
-			log.Printf("[SkillService] Error scanning system skills: %v", err)
-		} else {
-			log.Printf("[SkillService] Found %d system skills", len(systemSkills))
-			// 先删除旧的 system skills
+		if err == nil && len(systemSkills) > 0 {
 			s.skillRepo.DeleteByType("system")
-			// 批量插入
-			if err := s.skillRepo.UpsertBatch(systemSkills); err != nil {
-				log.Printf("[SkillService] Error saving system skills: %v", err)
-			}
+			s.skillRepo.UpsertBatch(systemSkills)
+			totalCount += len(systemSkills)
 		}
 	}
 
 	// 扫描 user skills: account/{username}/skills (除了 admin)
 	accountPath := filepath.Join(projectRoot, "account")
 	entries, err := os.ReadDir(accountPath)
-	if err != nil {
-		log.Printf("[SkillService] Error reading account directory: %v", err)
-	} else {
+	if err == nil {
 		for _, entry := range entries {
 			if !entry.IsDir() || entry.Name() == "admin" {
 				continue
 			}
 			userSkillsPath := filepath.Join(accountPath, entry.Name(), "skills")
 			if _, err := os.Stat(userSkillsPath); err == nil {
-				log.Printf("[SkillService] Scanning user skills for %s from: %s", entry.Name(), userSkillsPath)
 				userSkills, err := s.scanSkillsDirectory(userSkillsPath, "user")
-				if err != nil {
-					log.Printf("[SkillService] Error scanning user skills for %s: %v", entry.Name(), err)
-				} else {
-					log.Printf("[SkillService] Found %d user skills for %s", len(userSkills), entry.Name())
-					// 批量插入
-					if err := s.skillRepo.UpsertBatch(userSkills); err != nil {
-						log.Printf("[SkillService] Error saving user skills for %s: %v", entry.Name(), err)
-					}
+				if err == nil && len(userSkills) > 0 {
+					s.skillRepo.UpsertBatch(userSkills)
+					totalCount += len(userSkills)
 				}
 			}
 		}
 	}
 
-	log.Println("[SkillService] Skills initialized successfully")
+	if totalCount > 0 {
+		log.Printf("[SkillService] Loaded %d skills", totalCount)
+	}
 	return nil
 }