Feature integration fast-forwarded from9fa0af01 to exact4a9649218ce5d6f0c009adf1de2f2b9277cae8bc; source review270. Accepted under Paul's explicit host-specific validation exception. Destination exact CI SUCCESS (gate/cross/minio), independently verified complete disk-backed ext4 FULL local coverage:2034 top entries,727 nested,2761 started/terminal cases,5 default fuzz seeds,8 partitions exit0, only2 expected manual preview/demo skips. Independent binary/discovery byte-identical; build/vet/gofmt/launchctx/66 nonconsole including litestream/all5cross PASS.
Three-file inert enrollment unit: private finite roster recording and historical status, immutable receipts/add-only membership, strict additive schema hook. Actual Opus design and code/composition reviewed; F1 foreign reserved-name first-Open defect reproduced, fixed and accepted in final review. Focused normal/race passed22 tests each; writer-reservation mutant compiled and failed intended assertion. Original monolithic and fixture failures retained; no timeout/durability/gate changes or crash proof.
Deploying this tip would perform schema migration on Open and remains held. No live enrollment/grants/handlers/CLI/provider/runtime changes, main merge/deploy, or billing activation. Existing Carloku fixed-cohort sponsorship decision remains approved; no future automatic eligibility or charging. Next: reviewed platform operator API/CLI preview/enroll/status contract; grant/apply/monthly/resource policy, credential/provider/restore/rollout holds remain. Parent owns pricing/demo/deploy.
Durable checkpoint: notes/backend-integration-4a964921-checkpoint-20261009.json. LIVE OFF. Same lead, no automatic retry or paused Claude restart.