test(editor): align model and cursor custody fixtures with owner-close policy

src/renderer/src/components/editor/closed-editor-model-lifetime.test.ts

@@ -38,10 +38,11 @@ it('keeps a live model and releases only its closed sibling', async () => {
 it('preserves a shared URI until its final file owner closes', async () => {
   const { store, attach, add } = createModelLifetimeFixture()
   const { file, model } = add('shared-a')
-  store.setState({ openFiles: [file, { ...file, id: 'shared-b' }] })
+  store.setState({ openFiles: [file, { ...file, id: 'shared-b', readOnly: true }] })
   attach()
   store.getState().closeFile(file.id)
   await Promise.resolve()
+  expect(store.getState().openFiles.map((openFile) => openFile.id)).toEqual(['shared-b'])
   expect(model.isDisposed()).toBe(false)
   store.getState().closeFile('shared-b')
   await Promise.resolve()

src/renderer/src/components/editor/editor-model-host-isolation.test.ts

@@ -1,7 +1,7 @@
 // @vitest-environment happy-dom
 import * as monaco from 'monaco-editor/esm/vs/editor/editor.api.js'
 import { afterEach, describe, expect, it, vi } from 'vitest'
-import type { OpenFile } from '@/store/slices/editor'
+import { buildOwnedEditorFileId, type OpenFile } from '@/store/slices/editor'
 import type { WorktreeOperationRoute } from '@/lib/worktree-operation-route'
 import {
   attachModelLifetimeView,
@@ -35,6 +35,7 @@ function file(id: string, route: WorktreeOperationRoute, filePath = FILE_PATH):
     ...modelLifetimeFile(id),
     filePath,
     relativePath: 'same-path.txt',
+    runtimeEnvironmentId: route.runtimeEnvironmentId,
     operationProvenance: {
       ownershipProjection: 'explicit',
       generation: {
@@ -249,6 +250,12 @@ describe('same-path models on different execution hosts', () => {
     const { owners, store, attach } = createHostModels()
     const local = owners[0]!
     const runtime = owners[2]!
+    const migratedFile: OpenFile = {
+      ...local.file,
+      id: buildOwnedEditorFileId(FILE_PATH, local.file.worktreeId, 'hub-a'),
+      runtimeEnvironmentId: 'hub-a',
+      operationProvenance: runtime.file.operationProvenance
+    }
     const detach = attachModelLifetimeView(local.model)
     edit(runtime.model, 'runtime independent edit')
     attach()
@@ -257,8 +264,10 @@ describe('same-path models on different execution hosts', () => {
         .getState()
         .openFiles.map((opened) =>
           opened.id === local.file.id
-            ? { ...opened, operationProvenance: runtime.file.operationProvenance }
-            : opened
+            ? migratedFile
+            : opened.id === runtime.file.id
+              ? { ...opened, readOnly: true }
+              : opened
         )
     })
     await Promise.resolve()
@@ -268,8 +277,9 @@ describe('same-path models on different execution hosts', () => {
     expect(local.model.isDisposed()).toBe(true)
     expect(runtime.model.isDisposed()).toBe(false)
     expect(runtime.model.getValue()).toBe('runtime independent edit')
-    store.getState().closeFile(local.file.id)
+    store.getState().closeFile(migratedFile.id)
     await Promise.resolve()
+    expect(store.getState().openFiles.some((opened) => opened.id === runtime.file.id)).toBe(true)
     expect(runtime.model.isDisposed()).toBe(false)
     await runtime.model.undo()
     expect(runtime.model.getValue()).toBe(runtime.initial)

src/renderer/src/components/editor/monaco-cursor-line-lifetime.test.ts

@@ -41,6 +41,7 @@ function startTracking(
 describe('Monaco cursor-line ownership lifetime', () => {
   it('releases positions after 250 distinct owned editor tabs close', () => {
     const store = createEditorStore()
+    store.setState({ unifiedTabsByWorktree: {} })
     for (let index = 0; index < 250; index += 1) {
       const file = makeFile(`editor:wt-1:local:file-${index}`, `/repo/file-${index}.ts`)
       store.setState({ openFiles: [file] })
@@ -57,8 +58,11 @@ describe('Monaco cursor-line ownership lifetime', () => {
   it('isolates same-path positions and closes only the selected file identity', () => {
     const store = createEditorStore()
     const local = makeFile('editor:wt-1:local:file.ts', '/repo/file.ts')
-    const remote = makeFile('editor:wt-1:remote-a:file.ts', '/repo/file.ts')
-    store.setState({ openFiles: [local, remote] })
+    const remote = {
+      ...makeFile('editor:wt-1:remote-a:file.ts', '/repo/file.ts'),
+      runtimeEnvironmentId: 'remote-a'
+    }
+    store.setState({ openFiles: [local, remote], unifiedTabsByWorktree: {} })
     const localTracking = startTracking(store, local, 12)
     const remoteTracking = startTracking(store, remote, 35)