feat(review): a recording is judged

[haribo]

Summary

• ADR 0023 (validated): a recording is judged, and the judgment lands on the recording on screen — one edition, one variant; statuses derived from stored facts (to-review, accepted, refused), mandatory remark on refusal, symmetric take-backs; every push brings new bytes and a new to-review recording; the recording counts in the case derivation like a capture
• Server: migration 00020 (recording_judgments, exercised Up→Down→Up), POST/DELETE /recordings/{id}/judgment, grid recordings expose status and the standing refusal; an edition carrying recordings reopens its settled cases (deliberately narrow — moved still never rises); SaveReview re-derives after releasing onto the latest edition, since the caught-up edition can carry unjudged videos; the video is served with its sniffed content type (WebM/MP4) so the browser streams instead of downloading
• Web (validated mockup): clicking a recording opens the carousel on a player view with its own address (/recordings/:variantId); the pair judges the video, refuse opens the remark sheet (no variant ticks, its own title); → enters the steps, ← from the first step returns to the video, ↑↓ switch variants, space belongs to the player

Test plan

• Design tests named in docs/design/product.md §3: TestARecordingIsJudgedAndTheCaseFollows, TestANewEditionResetsTheRecordingToReview
• Carousel specs: player + judge, refuse sheet, take-back with standing refusal, the walk; grid spec: the cell opens the carousel and downloads nothing
• e2e: "the recording is judged in the carousel, and a new push resets it (let the reviewer judge the recording #226)"
• Full gates: gen-check, be-check, be-test (12), db-test, fe-check, fe-test (106), fe-test-e2e (63)
• Screenshots of the three states, both themes, validated

Existing tests modified (flagged): the grid spec "leaves the recording without a verdict ring" carried ADR 0013's superseded premise — it becomes "opens the recording in the carousel instead of downloading it"; its fixtures gain the now-required status field.

Deploy note: cases carrying recordings (prod: signing in) return to to-review on their next push — the price ADR 0023 makes explicit.

Closes #226