feat(openreview): public adapter — search/venue/paper/reviews

[jackwener]

Summary

OpenReview is the open peer-review platform used by ICLR / TMLR / COLM and many ML workshops. Its v2 API (api2.openreview.net) exposes everyone-readable submissions, reviews, and decisions without auth, so all four commands run with browser: false.

• openreview search <query> — full-text search via /notes/search?term=...&type=terms
• openreview venue <venue> — list venue submissions; accepts either a display name (matched against content.venue, e.g. "ICLR 2024 oral") or a full invitation id (e.g. "ICLR.cc/2025/Conference/-/Submission"); offset pagination
• openreview paper <id> — single-paper detail with full abstract
• openreview reviews <forum> — paper + threaded reviews/decisions/comments, ordered chronologically with paper lifted to row 0; classifies notes via invitation tail (REVIEW / DECISION / REBUTTAL / COMMENT / META_REVIEW / WITHDRAWAL)

Listing IDs round-trip into paper / reviews (id === forum for top-level submissions). PDF URLs normalized to absolute https://openreview.net/pdf/.... pdate falls back to cdate when missing, formatted as YYYY-MM-DD.

Agent-native contract (lessons applied from #1292 / #1293)

• All limits/offsets/ids fail-fast with typed errors (ArgumentError / EmptyResultError / CommandExecutionError) — no silent clamping, no Math.min/max, no empty-array fallbacks.
• coerceInt accepts numeric strings but rejects floats / NaN / 'abc' so CLI argv coercions don't silently drift.
• openreviewFetch wraps fetch rejection, non-2xx, 404 (mapped to null so callers throw a contextual EmptyResultError), and res.json() parse failures all into CommandExecutionError. Network/API failures never look like empty results.
• requireForumId validates [A-Za-z0-9_-]{6,20} so bad ids fail before any network call.
• noteToRow falls back from content.authors → authorIds (with ~ / trailing-digit cleanup) only when the primary field is missing — never silently masks a partial response.
• reviews per-row truncation has a 200-char floor (no Math.max).

Output Columns

Command	Columns
search	rank, id, title, authors, venue, pdate, url
venue	rank, id, title, authors, keywords, primary_area, pdate, pdf, url
paper	id, title, authors, keywords, venue, venueid, primary_area, abstract, pdate, pdf, url
reviews	type, author, rating, confidence, text

Test plan

• npm run typecheck
• npx vitest run clis/openreview/ — 1 file / 23 tests passing
• npm run build — manifest regenerated, 655 entries, 4 new openreview entries
• bash scripts/check-doc-coverage.sh --strict — 106/106
• Live: openreview search "diffusion model" --limit 3 — returns ranked papers with venue + pdate
• Live: openreview venue "ICLR 2024 oral" --limit 3 — returns ICLR 2024 orals with keywords/primary_area/pdf
• Live: openreview paper KS8mIvetg2 — full abstract intact
• Live: openreview reviews KS8mIvetg2 --max-length 800 — PAPER row first, then 3 REVIEW rows with rating/confidence
• Live: openreview paper notarealid → EMPTY_RESULT; openreview venue "ICLR 2099 oral" → EMPTY_RESULT; empty search "" → ARGUMENT