Pamela Chia f012dfa850 fix(www): sitemap lists all changelog slugs (#50275)
The www sitemap generator reads changelog URLs from the build-generated
RSS feed but only accepted links whose slug starts with a number, the
shape `computeChangelogEntrySlug` produces solely for entries carrying
`legacy_gh_discussion`. Every changelog entry authored since that
migration has a plain text slug and was silently missing from
`sitemap_www.xml`. I widened the link match to any non-empty slug; the
RSS builder is the only producer of that file and emits exactly one link
per item, so no other filter is needed.

I added a text-slug RSS item to the fixture-driven sitemap test and
asserted that the changelog URL list equals the RSS item list, so a
future filter that drops entries fails the suite.

**Note:** text-slug entries now pass through the same fail-the-build
pubDate check that numeric-prefixed entries already did after #50198. A
changelog entry with no `publish_date` and no date-prefixed filename
would produce an unparseable pubDate and stop the www build. The
alternative, shipping the URL without lastmod, is a one-line change. I
kept the gate because every current changelog entry carries a
date-prefixed filename, the changelog repo documents that convention,
and the build error names the entry URL.

## To test

Tested on Vercel preview:
- [x] Count `<item>` blocks in `<preview>/changelog-rss.xml`, then count
`/changelog/` locs in `<preview>/sitemap_www.xml`, expect the two counts
to match
- [x] Search the preview sitemap for `/changelog/pipelines`, expect one
`<loc>` entry with a `<lastmod>` date
- [x] Search the preview sitemap for a numeric-prefixed entry such as
`/changelog/47796-developer-update-july-2026`, expect it still present

## Linear
- fixes GROWTH-1212


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **Bug Fixes**
- Changelog pages with text-based slugs are now correctly recognized in
the sitemap.
- Sitemap entries for these changelog pages now use their RSS
publication dates.
- RSS links are matched more reliably, ensuring all valid changelog URLs
are included.
- Invalid publication dates are rejected instead of producing incorrect
sitemap metadata.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->
2026-09-12 02:11:25 +08:00
2025-06-17 11:08:46 +02:00
2024-01-10 13:34:41 +01:00
2021-07-25 12:45:26 +08:00

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