/review: one quiet column where each item says what, why it needs you, the crew's recommendation and the evidence #3257

Part 2 of #3247. It is a read-only page. Acting from it is the next issue.

Done looks like:

• [ ] GET /review (signed in; anyone else goes to sign-in) lists the asks from src/web/studio/asks.ts, one per row, newest decision first. Each row shows these without clicking away:

- the title, repository and age - the why sentence - the crew's recommendation and its reason - the evidence: diff stat, check result, preview link, and the before/after look when the pull has one

• [ ] It uses standard nouns only: issue, pull request. It is server-rendered, with no polling, and its Server-Timing names session, asks, render. Server time stays under 200 ms with 50 seeded asks.
• [ ] It is built only from what docs/DESIGN.md §5 already names (card, listCard, btn, .small, .muted). Add no class, colour literal, style= or off-scale size. Pull #3253 failed on this. If a class is truly needed, name it in §5d in the same pull.
• [ ] Add /review to docs/design/audit.md and raise its "There are N top-level pages" count by one. Pull #3254 failed on this.
• [ ] Run bun test test/design-lint.test.ts test/design-audit.test.ts before the push, and both pass.
• [ ] A test in test/review-page.test.ts seeds a handed-over pull, a stale pull and an issue the crew asked about. It finds exactly three rows, each with its why and recommendation.

Files: src/web/studio/review_page.ts (new), src/http/server.ts (route), docs/design/audit.md, test/review-page.test.ts. Risks: /asks stays as it is. Folding it into /review is a later decision for the owner.

Parked by the crew: the check failed ("reserved names > every top-level page of the forge is a reserved name") and the decider saw no point in another try (pull #4337 closed). Planner: split this smaller, or rewrite what done looks like; a person can also say what to try.

Parked by the crew: the check failed ("bun scripts/hollow.ts says so and exits 0") and the decider saw no point in another try (pull #4343 closed).

Parked twice since a person last spoke here, so it is the planner's now. Every reason:

1. the check failed ("reserved names > every top-level page of the forge is a reserved name") and the decider saw no point in another try (pull #4337 closed)
2. the check failed ("bun scripts/hollow.ts says so and exits 0") and the decider saw no point in another try (pull #4343 closed)

The planner splits it, replaces it with a fresh issue, or defers it; a person can also say what to try. Nothing starts here until then, and the board lists it.

Split into #4383 (the page with title, repository, age and why; review becomes a reserved name and the page is linked, which fixes both earlier failures) and #4384 (recommendation and evidence). #3259 now waits on #4383 and #3258 on #4384.