P2 infra: add MinIO ILM expiry for raw objects

[SlavaKuntsov]

Phase / Priority / Area

Phase 15 · Priority P2 · Area infra

Scope

deploy/docker-compose.yml:50 (minio-setup), scripts/ilm.sh (new), services/transcoder/app/consumer.py (hook after ready)

Goal

Удалять raw/{id}/original.mp4 через 7d / сразу.

Acceptance Criteria

• mc ilm add --expiry-days 7 для raw/, опц. KEEP_RAW=false → сразу RemoveObject, videos.updated_at обновляется

Проверки

mc ilm ls, raw/ исчезает

Риски

Сразу vs 7d — подтвердить (стоимость vs дебаг)

[SlavaKuntsov]

Pull request opened

#41 — will auto-close via Closes #16 on merge.

Verification

• uv run --project services/transcoder pytest -v — 20 passed (keep_raw tests)
• docker logs minio-setup — ilm raw/ 7d added
• docker compose up -d — pgbouncer healthy

Remaining risks

• e2e not run