Fix article API: render glossary terms for glossary page (#59647)

Author: heiskr

src/article-api/middleware/article-body.ts

@@ -4,6 +4,7 @@ import { Context } from '@/types'
 import { ExtendedRequestWithPageInfo } from '@/article-api/types'
 import contextualize from '@/frame/middleware/context/context'
 import features from '@/versions/middleware/features'
+import glossaries from '@/frame/middleware/context/glossaries'
 import { transformerRegistry } from '@/article-api/transformers'
 import { allVersions } from '@/versions/lib/all-versions'
 import type { Page } from '@/types'
@@ -32,6 +33,9 @@ async function createContextualizedRenderingRequest(pathname: string, page: Page
   // Load feature flags into context (needed for {% ifversion %} tags)
   features(renderingReq as ExtendedRequestWithPageInfo, {} as Response, () => {})
 
+  // Run page-specific contextualizers (e.g., glossaries middleware)
+  await glossaries(renderingReq as ExtendedRequestWithPageInfo, {} as Response, () => {})
+
   return renderingReq
 }
 

src/article-api/tests/article-body.ts

@@ -70,6 +70,16 @@ describe('article body api', () => {
 
   // Removed: non-article pages test - landing pages are now supported via transformers
 
+  test('glossary page renders glossary terms', async () => {
+    const res = await get(makeURL('/en/get-started/learning-about-github/github-glossary'))
+    expect(res.statusCode).toBe(200)
+    // Glossary terms come from the glossaries middleware context,
+    // not from the markdown body itself.
+    expect(res.body).toContain('## foo')
+    expect(res.body).toContain('## check')
+    expect(res.body).toContain('Foo is an intentionally meaningless placeholder')
+  })
+
   test('invalid Referer header does not crash', async () => {
     const res = await get(makeURL('/en/get-started/start-your-journey/hello-world'), {
       headers: {