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+---
+"@esengine/node-editor": minor
+---
+
+feat(node-editor): add box selection and variable node error states
+
+- Add box selection: drag on empty canvas to select multiple nodes
+- Support Ctrl+drag for additive selection (add to existing selection)
+- Add error state styling for invalid variable references (red border, warning icon)
+- Support dynamic node title via `data.displayTitle`
+- Support hiding inputs via `data.hiddenInputs` array