fix(design-studio): verify fixture freshness and use shared import alias

Author: Bill Leoutsakos

scripts/design-studio/refresh.test.mjs

@@ -283,6 +283,18 @@ test('refresh tracks source changes in imported stylesheets', () => {
   assert.notEqual(changed.sourceRevision, first.sourceRevision)
 }, 60000)
 
+test('fixture edits invalidate the published checkout revision', () => {
+  const { repo, refresh } = guardedRefresh()
+  const first = refresh()
+  const file = 'tools/design-studio/_components/component-fixtures.tsx'
+  write(repo, file, `${readFileSync(path.join(repo, file), 'utf8')}\n// revised fixture`)
+  const changedRevision = workingTreeRevision(repo)
+  assert.notEqual(changedRevision, first.sourceRevision)
+  const changed = refresh()
+  assert.equal(changed.sourceRevision, changedRevision)
+  assert.notEqual(changed.fixtureHash, first.fixtureHash)
+}, 60000)
+
 test('refresh requires a fixture mapping for each variant axis', () => {
   const { refresh } = guardedRefresh()
   const manifest = refresh()

tools/design-studio/_lib/manifest.ts

@@ -4,7 +4,7 @@ import { execFileSync } from 'node:child_process'
 import { existsSync, readFileSync } from 'node:fs'
 import { homedir } from 'node:os'
 import path from 'node:path'
-import { workingTreeRevision } from '../../../scripts/design-conformance/shared/source-revision'
+import { workingTreeRevision } from '#design-conformance/shared/source-revision'
 
 export interface StudioLocation {
   file: string
@@ -122,6 +122,7 @@ export function getStudioPageManifest(mode: 'components' | 'extras'): {
       cwd: process.env.SIM_STUDIO_REPO ?? process.cwd(),
       encoding: 'utf8',
     }).trim()
+    // This revision includes fixture adapters and contracts as well as product source.
     stale = workingTreeRevision(repo) !== manifest.sourceRevision
   } catch {
     stale = true