Retire the paper pages

[yattias]

Seventh chunk of the dead-code removal plan (docs/dead-code-report.md, kept local), following #1174: paper pages are no longer part of the product.

Redirects

/paper and /paper/:path* redirect permanently to the homepage. The seven registered-report entries that map old paper URLs to /report/... stay ahead of the catch-all, so those links still land on the report. Verified on the dev server: /paper, /paper/:id, /paper/:id/:slug, a tab URL and /paper?doi= all answer 308 to /; the registered-report URL still answers 308 to its /report page.

What goes

• app/paper/** (the slug and DOI redirect pages, the layout and the five tab pages) and everything only it reached: the paper feed card, the journal and hashtag badges only that card rendered, the paper header skeleton, the hot-score tooltip, the version-history tab and its display (versions were a paper feature), PaperService's metadata/abstract updaters and the OpenAlex creator (PaperService.get stays for the expert finder), and the paper sitemap chunk.
• Two leftovers from main's earlier removals, swept up here: services/file.service.ts and components/ui/MainPageHeader.tsx.
• The top bar, back-navigation list, share-title label, ESLint page glob and lint:work-pages script drop their paper entries.

How the rest of the app treats papers now

This is the frontend side of the open question in the plan; it needs no backend change.

• buildWorkUrl no longer builds paper URLs: a paper (and any unknown content type) gets '#', which the comment mention renderers, the recently-visited rail and the activity cards already treat as "no link". The DOI argument only ever served paper URLs, so it goes.
• FeedEntryItem returns nothing for a PAPER entry and the activity feed builds no work card for a paper event, so paper cards disappear from every feed, list and profile tab that renders feed entries.
• Bounties and comments whose related work is a paper still render (they are the peer-review feed), with no destination for the paper itself.
• Search handlers keep routing the "paper" entity type that recents and OpenAlex hits use: proposals and posts go to their pages, papers go home.

If the backend later stops emitting paper entries, the PAPER guards become dead and can go.

39 files changed, 1,244 lines removed, 42 added. The remaining behaviour changes are the ones listed above.

Checks

• npm run lint: 0 errors (2 pre-existing warnings in untouched files)
• npm run type-check: clean
• knip run three times (after the main pass, after the six second-layer deletions, and once more): no unused files, no new unused exports or dependencies
• Dev server on the branch: all main routes return 200, the home feed renders, every paper URL form redirects as described

Next

Chunk 8 (retire/8-notebook) is the last page retirement and the biggest; its prerequisites table in the plan lists the workspace doors that have to exist first.

🤖 Generated with Claude Code

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Project	Deployment	Actions	Updated
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Quality Gate failed

Failed conditions
24.2% Duplication on New Code (required ≤ 3%)

See analysis details on SonarQube Cloud