fix(mcp): add shared operations and secure scene APIs

packages/mcp/src/tools/scene-lifecycle/test-utils.ts

@@ -1,3 +1,5 @@
+import { SceneBridge } from '../../bridge/scene-bridge'
+import { createSceneOperations, type SceneOperations } from '../../operations'
 import {
   type SceneListOptions,
   type SceneMeta,
@@ -15,6 +17,20 @@ export function parseToolText(content: StoredTextContent[]): Record<string, unkn
   return JSON.parse(content[0]!.text) as Record<string, unknown>
 }
 
+export function createTestSceneOperations(options?: {
+  bridge?: SceneBridge
+  store?: InMemorySceneStore
+}): {
+  bridge: SceneBridge
+  store: InMemorySceneStore
+  operations: SceneOperations
+} {
+  const bridge = options?.bridge ?? new SceneBridge()
+  const store = options?.store ?? new InMemorySceneStore()
+  const operations = createSceneOperations({ bridge, store })
+  return { bridge, store, operations }
+}
+
 /**
  * In-memory `SceneStore` for tests. Backed by a plain `Map` keyed by id.
  * Implements the full interface including optimistic concurrency via