feat: select text across bullets and delete it like a text editor; Ctrl+Z in tasks; notes and lists without emoji; custom done columns complete tasks

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/api/handlers_tasklists.go

@@ -28,14 +28,19 @@ func (s *Server) handleCreateTaskList(w http.ResponseWriter, r *http.Request) {
 		SpaceID string `json:"spaceId"`
 		TeamID  string `json:"teamId"`
 		Title   string `json:"title"`
-		Icon    string `json:"icon"`
+		Icon    *string `json:"icon"` // "" = no icon; missing = the default
 		Color   string `json:"color"`
 	}
 	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
 		writeError(w, http.StatusBadRequest, "Ungültiges JSON")
 		return
 	}
-	tl, err := s.store.CreateTaskList(userID, req.SpaceID, req.TeamID, req.Title, req.Icon, req.Color)
+	tl, err := s.store.CreateTaskList(userID, req.SpaceID, req.TeamID, req.Title, derefIcon(req.Icon), req.Color)
+	if err == nil && tl != nil && req.Icon != nil && *req.Icon == "" {
+		if err = s.store.ClearIcon("task_lists", tl.ID); err == nil {
+			tl.Icon = ""
+		}
+	}
 	if err != nil {
 		writeError(w, http.StatusBadRequest, err.Error())
 		return