Link in-catalog paper mentions in 解读 reviews

[znsoftm]

When a paper 解读 mentions another work that is already in the catalog, that mention becomes a clickable link to that paper’s review. An Update references / 更新引用 button re-scans the existing review text against the current catalog and persists the links (no LLM regenerate).

Behavior

• Matcher uses strong signals only: arXiv ids (2504.15585, arXiv:…, arxiv.org/abs/…, optional vN, old hep-th/9901001) and known catalog titles (length/word floor to avoid short false positives).
• Only papers that exist in the catalog are linked; the review’s own paper is skipped; missing ids/titles are ignored.
• Resolved refs (paper_id, title, arxiv_id, has_review, match) are stored on reviews/<id>.json and returned on GET /papers/review/{id}.
• First generate also rematches and saves refs. Existing reviews get links after one Update click.
• Review modal renders in-text links plus a related-papers list. Clicking opens the other paper’s 解读 (same as 查看解读 / 生成解读). Hash #review=<id> makes the link shareable.
• Update status: working / done with count / error. Payload stays small (no abstracts on refs).

API

• POST /papers/review/{id}/refs — rematch + persist
• GET/generate review views include refs

Test plan

• go test ./internal/api/ -count=1 (passed)
• Matcher: extract modern/old/URL/versioned arXiv ids; title match; skip self, short titles, and out-of-catalog mentions.
• HTTP: Update persists refs and GET still returns them after reload; generate writes refs; Update without a review returns 409.
• Browser: open a review that cites another catalog paper → Update → mention becomes a link → click opens that paper’s review (#review=<id>). ZH/EN button labels.

Walkthrough

Catalog with 查看解读
Review after Update references
Clicked citation opens linked review
review-citation-links.mp4

Stacked on cursor/papers-catalog-snapshot-c8a7 (latest papers tip with the 解读 overlay).

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