## Related Issues
Resolves the corrected lifecycle fixture findings in PR #8254.
## Summary of Changes
Preserve separate incarnation-bound durable MRF responsibilities and their lifecycle audit records, and align replay fixtures with their checkpoint identities.
## Verification
Two independent source reviews and changed-delta reviews are complete. The final review approved 607a0b9bb0 with no remaining supported findings. Local runtime claims were not independently reproduced for this pull request.
## Impact
Keeps storage generation fences and retained responsibility semantics. Test-capacity reservations preserve existing deadlines and assertions.
## Additional Notes
Squash merge of the currently approved fix under the authorized CI-bypass exception. Main CI and release acceptance remain required.
Hauser
d60dfbb826