Keep native watcher contracts in Node and reset runtime test caches (#26315)

* test: keep native filesystem watcher contract under Node

* test: reset canonical repository keys with runtime mocks

config/scripts/vitest-node-runtime-files.mjs

@@ -84,6 +84,7 @@ export const NODE_RUNTIME_INCLUDE = [
   'src/main/runtime/structured-agent-session-startup-tab-restore.test.ts',
   'src/shared/remote-runtime-shared-control-connection.test.ts',
   'src/main/runtime/relay/relay-control-client.test.ts',
+  'src/main/ipc/filesystem-watcher-ignore-real.test.ts',
   'src/main/ipc/runtime-environment-preference.test.ts',
   'src/main/ipc/runtime-environment-transport-routing-tailscale-hint.test.ts',
   'src/renderer/src/components/emulator-pane/emulator-device-frame-visibility.test.tsx',

src/main/runtime/orca-runtime-test-lifecycle.spec.ts

@@ -1,6 +1,7 @@
 import * as mocks from './orca-runtime-test-mocks.spec'
 import { awaitBackgroundRemovalsInRuntimeTests } from './orca-runtime-background-removal-test-support'
 import { _resetPendingWorktreeRemovalsForTests } from '../worktree-background-removal'
+import { _resetCanonicalRepoKeyCacheForTests } from '../git/canonical-repo-key'
 
 const { MOCK_GIT_WORKTREES, RuntimeBrowserCommands, _resetTerminalViewAttributesForTest } = mocks
 const { addGitHubIssueCommentMock, addGitHubPRReviewCommentMock } = mocks
@@ -63,6 +64,7 @@ const { updateGitLabIssueMock, updateGitLabMRMock, updateGitLabMRReviewersMock,
 awaitBackgroundRemovalsInRuntimeTests(mocks.OrcaRuntimeService.prototype as never)
 
 function resetRuntimeTestMocks(): void {
+  _resetCanonicalRepoKeyCacheForTests()
   _resetPendingWorktreeRemovalsForTests()
   // Why: constructing the browser commands is what pulls the Chromium cluster in, so
   // production installs this at the Electron entry. A Node host installs none and the