feat(tasks): 任务增加可选名称字段

tasks 表新增 name 列(空=未命名,前端回退到描述),端到端打通:
- DB: schema.sql 加列并补旧库 ALTER;tasks.go 的 Task/CreateOptions/CRUD;
  findings.go 分组与任务下拉带出 t.name
- 后端: TaskDTO、内存 Task、createTaskReq 透传 name
- 前端: 类型/API/mock 加 name;任务列表新增名称列与搜索、创建表单加名称输入;
  详情页与漏洞页标题回退 name || description

Claude-Session: https://claude.ai/code/session_019QXSCDmzimwnjntBNCgUD7

server/dto.go

@@ -32,6 +32,7 @@ func rawString(raw json.RawMessage) string {
 type TaskDTO struct {
 	ID                 string        `json:"id"`
 	ExplorationID      int64         `json:"exploration_id"`
+	Name               string        `json:"name"` // 可选任务名称;空=未命名
 	Description        string        `json:"description"`
 	Goal               string        `json:"goal"`
 	Status             string        `json:"status"` // created | running | paused | done | failed
@@ -83,6 +84,7 @@ func taskDTO(t *Task, status string) TaskDTO {
 	return TaskDTO{
 		ID:                 t.ID,
 		ExplorationID:      t.ExpID,
+		Name:               t.Name,
 		Description:        t.Description,
 		Goal:               t.Goal,
 		Status:             status,

server/manager.go

@@ -29,6 +29,7 @@ import (
 type Task struct {
 	ID          string `json:"id"`
 	ExpID       int64  `json:"exploration_id"`
+	Name        string `json:"name"` // 可选任务名称;空=未命名
 	Description string `json:"description"`
 	Goal        string `json:"goal"`
 	CreatedAt   int64  `json:"created_at"`
@@ -687,6 +688,7 @@ func unixNanoOrZero(t *time.Time) int64 {
 func taskFromPG(pt *pgdb.Task, store *pgdb.ExplorationStore, ic *intercept.Interceptor) *Task {
 	return &Task{
 		ID: strconv.FormatInt(pt.ID, 10), ExpID: pt.ExplorationID,
+		Name:        pt.Name,
 		Description: pt.Description, Goal: pt.Goal, CreatedAt: pt.CreatedAt.Unix(), Paused: pt.Paused, Queued: pt.Queued,
 		QueuedAt: unixNanoOrZero(pt.QueuedAt), QueueMode: pt.QueueMode,
 		CompletedAt: unixOrZero(pt.CompletedAt), Status: pt.Status, ParentRef: pt.ParentRef,

server/server.go

@@ -1299,6 +1299,7 @@ func (s *Server) testLLM(w http.ResponseWriter, r *http.Request) {
 }
 
 type createTaskReq struct {
+	Name                 string   `json:"name,omitempty"` // 可选任务名称;省略/空=未命名
 	Description          string   `json:"description"`
 	Goal                 string   `json:"goal"`
 	LLMProfileID         *int64   `json:"llm_profile_id,omitempty"`    // 指定运行本任务的 LLM 配置;省略/null=用激活配置
@@ -1356,6 +1357,7 @@ func (s *Server) createTask(w http.ResponseWriter, r *http.Request) {
 	}
 	req.CompanyIDs = companyIDs
 	t, err := s.m.CreateTaskWithOptions(req.Description, req.Goal, db.TaskCreateOptions{
+		Name:          strings.TrimSpace(req.Name),
 		SourceTaskIDs: sourceIDs, CompanyIDs: req.CompanyIDs, LLMProfileIDs: req.LLMProfileIDs,
 		TimeoutSeconds: req.TimeoutSeconds, PlanHeartbeatSeconds: req.PlanHeartbeatSeconds,
 		CoverageEnabled: req.CoverageEnabled,