editor: improve selection drag parity, ignore locked nodes

packages/editor/src/editor/Canvas.tsx

@@ -436,6 +436,18 @@ export function Canvas(props: CanvasProps) {
                   return;
                 }
 
+                // If the node is already in the current selection, keep the selection as-is.
+                // This matches goView-ish multi-selection behavior (drag moves the whole selection).
+                if (props.selectionIds.includes(node.id)) {
+                  if (node.locked) {
+                    // Locked nodes are selectable, but should not start a move drag.
+                    props.onSelectSingle(node.id);
+                    return;
+                  }
+                  props.onBeginMove(e);
+                  return;
+                }
+
                 // Locked nodes should still be selectable, but not movable.
                 if (node.locked) {
                   props.onSelectSingle(node.id);

packages/editor/src/editor/store.ts

@@ -584,12 +584,18 @@ export function editorReducer(state: EditorState, action: EditorAction): EditorS
         snapshot: new Map<string, Rect>(),
       };
 
+      // Only snapshot movable nodes.
+      // Locked/hidden nodes can remain selected (for context-menu ops), but they should not move.
       for (const id of state.selection.ids) {
         const node = state.doc.screen.nodes.find((n) => n.id === id);
         if (!node) continue;
+        if (node.locked || node.hidden) continue;
         drag.snapshot.set(id, { ...node.rect });
       }
 
+      // Nothing movable selected → no-op (avoid entering a dragging state).
+      if (!drag.snapshot.size) return state;
+
       return {
         ...state,
         canvas: {
@@ -630,6 +636,8 @@ export function editorReducer(state: EditorState, action: EditorAction): EditorS
 
       const nodes = state.doc.screen.nodes.map((n) => {
         if (!state.selection.ids.includes(n.id)) return n;
+        // Locked/hidden nodes should not move, even if selected.
+        if (n.locked || n.hidden) return n;
         const snap0 = drag.snapshot.get(n.id);
         if (!snap0) return n;