955083c0fc
Phase A is the headline and it passed on live hardware, through the real endpoints the UI
posts to: a customer who deletes files — or their entire app data directory — gets everything
back byte-identical, and the app works afterwards (paperless served the restored bytes over
its own API at the exact pre-deletion sha256). A1's two non-destruction promises both hold.
Three defects, recorded not fixed:
C9-F1 (HIGH) the Tier-2 restore button is offered for apps it can never restore, takes a
real outage, and reports "nothing was missing" — indistinguishable from a
genuine result, while 156 MB of that app's data sits unread in the same copy.
C9-F2 (HIGH) an app in a crash loop never alarms on any channel; StateRestarting is in no
down-set, so F-OBS's own heartbeat printed "0 currently down" for 9 minutes.
C9-F3 (MEDIUM) an interrupted offsite run leaves a lock the self-heal cannot reach; the tier
is dead until a human unlocks and the operator is told "unknown reason".
This answers Phase C item 8.
Two candidates were deliberately NOT filed: a recovery-unit poisoning the catalog sync healed
in ~3 min, and a snapshot_id that is documented as logging-only. Reporting either would have
been reporting an artifact.
Stopped at the end of Phase B (plus D10), then full recovery — both boxes healthy, real
cadences, offsite tier proven working again, no leaked scratch guests, peti untouched.
D11's approved staleAfter compression turned out not to be a knob; reported, not worked around.