feat(special): add Special:AncientPages report page

[Martin-Blau]

Summary

Add Special:AncientPages as a new report page plus its JSON companion endpoint.

This PR adds:

• /wiki/special/ancientpages/ for a human-readable oldest-pages report
• /wiki/special/ancientpages.json for machine-readable output
• shared build-time ranking logic based on article history
• sitemap and share-preview wiring so the new route behaves like the existing Special pages
• a build check that verifies the ranking against generated article history

Why This Should Ship

Taopedia already exposes several maintenance-oriented Special pages, but it does not currently expose an oldest-pages report. Special:AncientPages fills that gap with a route that is useful for exploration, historical context, and future maintenance work.

This is a focused feat(special) addition rather than a broad UI change:

• it uses existing article-history data already generated at build time
• it follows the same route family as the accepted/safe Special-page work in this repo
• it adds both HTML and JSON surfaces, matching existing Taopedia patterns
• it does not duplicate an existing Special page or an already-open PR

Review Notes

Affected routes:

• /wiki/special/ancientpages/
• /wiki/special/ancientpages.json
• /og/special/ancientpages.png

Validation:

• npm run build
• included postbuild checks now pass, including node scripts/check-ancient-pages.js

Behavior proof captured on July 1, 2026:

• live route before this PR: https://taopedia.org/wiki/special/ancientpages/ returns the site 404 page
• built route after this PR: /wiki/special/ancientpages/ renders the new report page
• screenshot viewport: 1440px wide

Before:

After:

Target Branch

• This PR targets test
• This PR targets main only because it promotes test to production

Security Checklist

• No secrets, tokens, build hooks, wallet seeds, or private endpoints are included
• No unnecessary workflow, dependency, or deployment changes

[taopedia-site-maintainer]

Verdict: Needs visual approval

PR #1956: feat(special): add Special:AncientPages report page

Engineering:

• Review type: Visual/product review
• CI: All required CI checks passed: build
• Cross-repo build: pass
• Risk: high
• Changed files: 9
• Changed lines: 235

Changed files:

• package.json
• scripts/ancient-pages.js
• scripts/check-ancient-pages.js
• scripts/check-sitemap.js
• src/lib/ancient-pages-context.ts
• src/lib/share-preview.ts
• src/pages/sitemap.xml.ts
• src/pages/wiki/special/ancientpages.astro
• src/pages/wiki/special/ancientpages.json.ts

Guardrails:

• Operational/build/deploy files changed; maintainer review required.
• Visual layout/style/rendering files changed; visual approval required.

Decision surface:

• Checks and cross-repo build passed; this is waiting on visual approval only.
• If the after screenshots look correct, comment /merge.
• If they look wrong or the change should not ship, comment /close.

What to check:

• Special page /wiki/special/ancientpages/: page title, table/list content, navigation links, and empty/error states.
• Changed page route(s): src/pages/sitemap.xml.ts.

Preview links:

• Production reference: https://taopedia.org
• No automatic Netlify preview is available. Comment /preview to create on-demand before/after draft deploys for this PR.

Cross-repo validation:

• pass merged checkout: Validated site PR head 9acdc44 merged into test, with articles test.
• pass npm ci: Dependencies installed.
• pass cross-repo build: GitHub Actions required build check passed; local build not run to completion on the constrained maintainer host. Original local detail: ...(truncated)
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Human decision:

• Review only the visual evidence shown above for product fit.
• Comment /merge to merge if this should ship.
• Comment /close to close if this should not ship.

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Automated review by Taopedia Site Maintainer.

[e35ventura]

/close this should be based on last edit

[taopedia-site-maintainer]

Closing by maintainer command /close.

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Automated review by Taopedia Site Maintainer.