feat: add drag-and-drop for tasks, workspace bullets, and list items

internal/api/server.go

@@ -89,6 +89,8 @@ func (s *Server) Router() http.Handler {
 		r.Get("/api/v1/triage/deck", s.handleGetTriageDeck)
 		r.Patch("/api/v1/triage/{id}", s.handleTriageAction)
 		r.Get("/api/v1/tasks", s.handleGetTasks)
+		r.Post("/api/v1/tasks/reorder", s.handleReorderTasks)
+		r.Post("/api/v1/task-lists/{id}/tasks/reorder", s.handleReorderTasks)
 
 		// Task Lists & Shares
 		r.Get("/api/v1/task-lists", s.handleGetTaskLists)
@@ -137,6 +139,8 @@ func (s *Server) Router() http.Handler {
 		r.Post("/api/v1/lists/{id}/items", s.handleCreateListItem)
 		r.Patch("/api/v1/lists/{id}/items/{itemId}", s.handleToggleListItem)
 		r.Delete("/api/v1/lists/{id}/items/{itemId}", s.handleDeleteListItem)
+		r.Post("/api/v1/lists/{id}/items/reorder", s.handleReorderListItems)
+		r.Put("/api/v1/lists/{id}/items/reorder", s.handleReorderListItems)
 		r.Post("/api/v1/lists/{id}/clear-completed", s.handleClearCompletedItems)
 
 		// Organizations & Teams
@@ -678,6 +682,34 @@ func (s *Server) handleGetTasks(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, http.StatusOK, tasks)
 }
 
+func (s *Server) handleReorderTasks(w http.ResponseWriter, r *http.Request) {
+	userID := auth.GetUserID(r.Context())
+	taskListID := chi.URLParam(r, "id")
+	if taskListID == "" {
+		taskListID = r.URL.Query().Get("taskListId")
+	}
+
+	var req struct {
+		Items []domain.ThoughtReorderItem `json:"items"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		writeError(w, http.StatusBadRequest, "Ungültiges JSON")
+		return
+	}
+
+	if err := s.store.ReorderTasks(taskListID, req.Items); err != nil {
+		writeError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+
+	s.wsHub.BroadcastToAll("TASK_REORDERED", map[string]interface{}{
+		"taskListId": taskListID,
+		"items":      req.Items,
+		"userId":     userID,
+	})
+	writeJSON(w, http.StatusOK, map[string]bool{"success": true})
+}
+
 func (s *Server) handleUpdateThought(w http.ResponseWriter, r *http.Request) {
 	userID := auth.GetUserID(r.Context())
 	thoughtID := chi.URLParam(r, "id")
@@ -1278,6 +1310,28 @@ func (s *Server) handleClearCompletedItems(w http.ResponseWriter, r *http.Reques
 	writeJSON(w, http.StatusOK, map[string]int64{"removed": removed})
 }
 
+func (s *Server) handleReorderListItems(w http.ResponseWriter, r *http.Request) {
+	listID := chi.URLParam(r, "id")
+	var req struct {
+		Items []domain.ListItemReorderItem `json:"items"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		writeError(w, http.StatusBadRequest, "Invalid request body")
+		return
+	}
+
+	if err := s.store.ReorderListItems(listID, req.Items); err != nil {
+		writeError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+
+	s.wsHub.BroadcastListEvent(listID, "ITEM_REORDERED", map[string]interface{}{
+		"listId": listID,
+		"items":  req.Items,
+	})
+	writeJSON(w, http.StatusOK, map[string]bool{"success": true})
+}
+
 func (s *Server) handleWebSocket(w http.ResponseWriter, r *http.Request) {
 	roomID := chi.URLParam(r, "listId")
 	if roomID == "" {