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cc-ci/machine-docs/BACKLOG-samever.md
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claim(M2): samever proven in real CI — step-back base<head, version-bump unaffected, discourse #4 + hedgedoc spot-check
5 real cc-ci runs (samever-deploy @ cc-ci main): Run B nightly steady-state step-back
custom-html 1.11.0+1.29.0→1.13.0+1.31.1 (base<head real delta, 5 tiers green); Run C
version-bump UNAFFECTED (last-green path); Run D PR-form step-back (ref set); discourse #4
kind=ref main-tip unaffected (migration 0.8.1→1.0.0 green); hedgedoc spot-check step-back
3.0.9→3.0.10 green. WHAT/HOW/EXPECTED/WHERE in STATUS-samever.md; logs /root/samever-*.log,
artifacts /var/lib/cc-ci-runs/samever-*/ on cc-ci.
2026-06-17 04:58:48 +00:00

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# BACKLOG — phase `samever`
## Build backlog
- [x] **M1** — resolver reads head version; step-back chain; unit tests. (CLAIMED 2026-06-17)
- [x] `abra.head_compose_version(recipe)` — parse `coop-cloud.<stack>.version` from head compose.yml
- [x] `warm_reconcile.version_key` + `newest_older_version` — single coop-cloud ordering source
- [x] resolver chain: override → (canonical if ≠ head) → (newest-older if canonical==head) → main-tip → skip
- [x] unit tests extended (13 pass): step-back, canonical≠head unchanged, no-older→skip, ordering, None-head
- [ ] **M2** — prove in real CI: nightly steady-state (canonical==latest) cold-on-latest steps back
(base_version < latest); PR form (non-version-bump PR, head==canonical); discourse #4 version-bump
UNAFFECTED; spot-check 1 other enrolled recipe. Awaiting M1 PASS before starting real-CI runs.
## M2 execution log (live)
- Run A (custom-html cold-on-latest, /root/samever-runA.log on cc-ci): launched 04:3xZ. No canonical
yet upgrade base kind=skip (head==main tip); on green promotes canonicallatest 1.13.0+1.31.1.
- Run B (next): cold-on-latest again canonical==head expect step-back base 1.11.0+1.29.0 (<latest).
### M2 result — CLAIMED 2026-06-17T04:55Z (all 5 demonstrations green)
- [x] Run B nightly steady-state step-back: custom-html canonical==head 1.13.0 base 1.11.0+1.29.0,
upgrade 1.11.01.13.0 (base<head real delta), 5 tiers green. 5 DoD]
- [x] Run C version-bump UNAFFECTED (enrolled): canonical older 1.11.0 head 1.13.0, "last-green" path.
- [x] Run D PR form: ref=2b82ebab pr=999, head==canonical step-back still triggers.
- [x] discourse #4 UNAFFECTED: kind=ref main-tip f87c612d, migration 0.8.11.0.0 green. 5 DoD]
- [x] Spot-check hedgedoc: step-back 3.0.93.0.10 generalizes to a 2nd recipe/tag-set, green.