fix: 修复Python模块导入错误并优化Chat功能

- 修复 core/agents/api 模块导入问题
- 优化 ChatInput 组件交互体验
- 增强 agent_handler 和 agent_service 功能
- 调整 Chat 页面样式和布局

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

server/cmd/api/main.go

@@ -387,7 +387,14 @@ func main() {
 		log.Println("Default tools initialized")
 	}
 
-	// 4.3 初始化 skills（已禁用自动加载，如需启用请调用 /skill/sync 接口）
+	// 4.3 初始化团队成员智能体
+	if err := agentService.InitTeamMembers(); err != nil {
+		log.Printf("Warning: Failed to init team members: %v", err)
+	} else {
+		log.Println("Team members initialized")
+	}
+
+	// 4.4 初始化 skills（已禁用自动加载，如需启用请调用 /skill/sync 接口）
 	// if err := skillService.InitSkills(); err != nil {
 	// 	log.Printf("Warning: Failed to init skills: %v", err)
 	// } else {
@@ -405,7 +412,7 @@ func main() {
 	toolHandler := handler.NewToolHandler(toolService)
 	mcpHandler := handler.NewMCPHandler(mcpService)
 	skillHandler := handler.NewSkillHandler(skillService)
-	agentHandler := handler.NewAgentHandler(agentService)
+	agentHandler := handler.NewAgentHandler(agentService, agentRepo)
 	memoryHandler := handler.NewMemoryHandler(memoryService)
 	sessionHandler := handler.NewSessionHandler(chatRepo, agentService)
 
@@ -590,6 +597,7 @@ func main() {
 	{
 		agentGroup.GET("/list", agentHandler.ListAgents)
 		agentGroup.POST("/create", agentHandler.CreateAgent)
+		agentGroup.POST("/init-team", agentHandler.InitTeamMembers)
 		agentGroup.PUT("/:id/status", agentHandler.UpdateAgentStatus)
 		agentGroup.PUT("/:id", agentHandler.UpdateAgent)
 		agentGroup.DELETE("/:id", agentHandler.DeleteAgent)