团队管理：成员擅长标签

- team_members 新增 specialty 列（老库自动 ALTER 迁移，幂等）
- 新接口：GET /api/teams/:id/members 成员列表（仅成员可看）、PUT /api/teams/:id/members/:uid 更新擅长（创建者可改他人，成员仅改自己）；邀请接口支持带擅长
- TeamDialog 重构：团队卡片内成员列表（头像/名称/邮箱/角色/彩色擅长 chip，超 3 个折叠 +N）、行内擅长编辑器（10 个预设点选 + 自定义输入）、邀请时顺手点选擅长预设
- 文档 20-account 同步更新（含活动栏新导航说明）
- curl E2E：邀请带擅长/创建者改他人/自改/越权与非成员 403 全部通过；53 前端测试 + Go 测试全绿

apps/server/internal/store/store.go

@@ -71,6 +71,7 @@ CREATE TABLE IF NOT EXISTS team_members (
   team_id INTEGER NOT NULL REFERENCES teams(id) ON DELETE CASCADE,
   user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
   role TEXT NOT NULL DEFAULT 'member',
+  specialty TEXT NOT NULL DEFAULT '',
   created_at INTEGER NOT NULL,
   PRIMARY KEY (team_id, user_id)
 );
@@ -107,6 +108,8 @@ CREATE INDEX IF NOT EXISTS idx_workspaces_owner ON workspaces(owner_id);
 	if _, err := s.db.Exec(`ALTER TABLE workspaces ADD COLUMN mock_token TEXT`); err == nil {
 		_, _ = s.db.Exec(`CREATE UNIQUE INDEX IF NOT EXISTS idx_workspaces_mock_token ON workspaces(mock_token)`)
 	}
+	// 老库补擅长列（幂等）
+	_, _ = s.db.Exec(`ALTER TABLE team_members ADD COLUMN specialty TEXT NOT NULL DEFAULT ''`)
 	rows, err := s.db.Query(`SELECT id FROM workspaces WHERE mock_token IS NULL OR mock_token = ''`)
 	if err != nil {
 		return err
@@ -289,14 +292,68 @@ WHERE m.user_id = ? ORDER BY t.id`, userID)
 	return out, rows.Err()
 }
 
-func (s *Store) AddTeamMember(teamID int64, email string) (*User, error) {
+// TeamMember 团队成员（含擅长标签，多个以空白或顿号分隔）
+type TeamMember struct {
+	UserID    int64  `json:"userId"`
+	Name      string `json:"name"`
+	Email     string `json:"email"`
+	Role      string `json:"role"`
+	Specialty string `json:"specialty"`
+}
+
+// TeamMembers 团队成员列表：创建者在最前，其余按加入时间
+func (s *Store) TeamMembers(teamID int64) ([]TeamMember, error) {
+	rows, err := s.db.Query(`
+SELECT m.user_id, IFNULL(u.name, ''), IFNULL(u.email, ''), m.role, m.specialty
+FROM team_members m LEFT JOIN users u ON u.id = m.user_id
+WHERE m.team_id = ?
+ORDER BY CASE m.role WHEN 'owner' THEN 0 ELSE 1 END, m.created_at`, teamID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var out []TeamMember
+	for rows.Next() {
+		var m TeamMember
+		if err := rows.Scan(&m.UserID, &m.Name, &m.Email, &m.Role, &m.Specialty); err != nil {
+			return nil, err
+		}
+		out = append(out, m)
+	}
+	return out, rows.Err()
+}
+
+// IsTeamMember 是否为团队成员（创建者亦为成员）
+func (s *Store) IsTeamMember(teamID, userID int64) (bool, error) {
+	var one int
+	err := s.db.QueryRow(`SELECT 1 FROM team_members WHERE team_id = ? AND user_id = ?`, teamID, userID).Scan(&one)
+	if errors.Is(err, sql.ErrNoRows) {
+		return false, nil
+	}
+	return err == nil, err
+}
+
+// UpdateMemberSpecialty 更新成员擅长（须先确认调用者是创建者或本人）
+func (s *Store) UpdateMemberSpecialty(teamID, userID int64, specialty string) error {
+	res, err := s.db.Exec(`UPDATE team_members SET specialty = ? WHERE team_id = ? AND user_id = ?`, specialty, teamID, userID)
+	if err != nil {
+		return err
+	}
+	n, _ := res.RowsAffected()
+	if n == 0 {
+		return ErrNotFound
+	}
+	return nil
+}
+
+func (s *Store) AddTeamMember(teamID int64, email string, specialty string) (*User, error) {
 	u, err := s.UserByEmail(email)
 	if err != nil {
 		return nil, err
 	}
 	_, err = s.db.Exec(
-		`INSERT OR IGNORE INTO team_members(team_id, user_id, role, created_at) VALUES(?,?,'member',?)`,
-		teamID, u.ID, time.Now().Unix(),
+		`INSERT OR IGNORE INTO team_members(team_id, user_id, role, specialty, created_at) VALUES(?,?,'member',?,?)`,
+		teamID, u.ID, specialty, time.Now().Unix(),
 	)
 	return u, err
 }