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* fix(mcp): keep store receiver bound in scene event operations appendSceneEvent and listSceneEvents detached the store methods before invoking them (const append = this.requireStore().appendSceneEvent; append(options)), so `this` was undefined inside store implementations that rely on it — SqliteSceneStore.withWriteTransaction in particular. Every save_scene, create_from_template, and live-sync mutation routed through the facade failed with "undefined is not an object (evaluating 'this.withWriteTransaction')" even though the SQLite write succeeded. Invoke the methods on the store instance instead, and add facade-level regression tests covering both the bound-receiver path and the stores-without-scene-events fallback. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * test(mcp): close scene store after facade tests --------- Co-authored-by: Claude Fable 5 <noreply@anthropic.com> Co-authored-by: Aymeric Rabot <aymeric.rabot@gmail.com>