feat(workspace): synchronize folders with server and add folder deletion

internal/api/server.go

@@ -95,7 +95,11 @@ func (s *Server) Router() http.Handler {
 		r.Put("/api/v1/task-lists/{id}", s.handleUpdateTaskList)
 		r.Delete("/api/v1/task-lists/{id}", s.handleDeleteTaskList)
 
-		// Workspace Documents
+		// Workspace Documents & Folders
+		r.Get("/api/v1/folders", s.handleGetFolders)
+		r.Post("/api/v1/folders", s.handleCreateFolder)
+		r.Delete("/api/v1/folders", s.handleDeleteFolder)
+
 		r.Get("/api/v1/documents", s.handleGetDocuments)
 		r.Post("/api/v1/documents", s.handleCreateDocument)
 		r.Get("/api/v1/documents/{id}", s.handleGetDocument)
@@ -811,6 +815,62 @@ func (s *Server) handleDeleteDocument(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, http.StatusOK, map[string]bool{"deleted": true})
 }
 
+// --- WORKSPACE FOLDERS ---
+
+func (s *Server) handleGetFolders(w http.ResponseWriter, r *http.Request) {
+	userID := auth.GetUserID(r.Context())
+	folders, err := s.store.GetFolders(userID)
+	if err != nil {
+		writeError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+	writeJSON(w, http.StatusOK, folders)
+}
+
+func (s *Server) handleCreateFolder(w http.ResponseWriter, r *http.Request) {
+	userID := auth.GetUserID(r.Context())
+	var req struct {
+		Path string `json:"path"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		writeError(w, http.StatusBadRequest, "Ungültiges JSON")
+		return
+	}
+	cleanPath, err := s.store.CreateFolder(userID, req.Path)
+	if err != nil {
+		writeError(w, http.StatusBadRequest, err.Error())
+		return
+	}
+	s.wsHub.BroadcastDocEvent("", "WORKSPACE_FOLDERS_UPDATED", map[string]string{"path": cleanPath})
+	writeJSON(w, http.StatusCreated, map[string]string{"path": cleanPath})
+}
+
+func (s *Server) handleDeleteFolder(w http.ResponseWriter, r *http.Request) {
+	userID := auth.GetUserID(r.Context())
+	folderPath := r.URL.Query().Get("path")
+	if folderPath == "" {
+		writeError(w, http.StatusBadRequest, "Pfad erforderlich")
+		return
+	}
+
+	deletedDocIDs, err := s.store.DeleteFolder(userID, folderPath)
+	if err != nil {
+		writeError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+
+	for _, docID := range deletedDocIDs {
+		s.wsHub.ReleaseDocLock(docID, userID, true)
+		s.wsHub.BroadcastDocEvent(docID, "DOC_DELETED", map[string]string{"id": docID})
+	}
+	s.wsHub.BroadcastDocEvent("", "WORKSPACE_FOLDERS_UPDATED", map[string]string{"path": folderPath})
+
+	writeJSON(w, http.StatusOK, map[string]interface{}{
+		"deleted":       true,
+		"deletedDocIds": deletedDocIDs,
+	})
+}
+
 // --- DOCUMENT SHARING & COLLABORATION ---
 
 func (s *Server) handleGetDocShares(w http.ResponseWriter, r *http.Request) {