Give each week's patch notes its own page

[Drefvelin]

Summary

• /updates stays the landing page and scrolls through published weeks, newest first, with older weeks loaded on demand.
• Each week has its own page at /updates/2026-W39. A week that was never published is not found.
• The next Discord post can link to that page. This does not change notes already sent.

Test plan

• Open /updates and scroll through recent weeks. Each heading opens that week.
• Open /updates/2026-W39 for a published week and use All updates to return.
• Confirm an unknown week returns not found, and the page still loads when the API is up.

Made with Cursor

Summary by CodeRabbit

• New Features
  • Added dedicated pages for individual weekly updates, with links back to the updates list.
  • Weekly update labels now link to their individual pages, where that week’s notes are shown.
  • Earlier weeks appear inline after current updates, with a “Show older” button to load more.
• Bug Fixes
  • Improved handling of unavailable or missing weekly updates, including showing an unavailable message when loading fails.

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Configuration used: Organization UI

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Run ID: 51397faa-fec6-4bc3-8a38-22217426de57

📥 Commits

Reviewing files that changed from the base of the PR and between 2aa91d3 and f6bcf49.

📒 Files selected for processing (8)

• frontend/app/components/updates/EarlierArchive.tsx
• frontend/app/components/updates/UpdatesPageView.tsx
• frontend/app/components/updates/WeekArchiveList.tsx
• frontend/app/updates/[week]/page.tsx
• frontend/app/updates/page.test.tsx
• frontend/app/updates/page.tsx
• frontend/lib/patchnotes/api.test.ts
• frontend/lib/patchnotes/api.ts

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