Restore client and test files that were already staged when the OBS
cadence commit was created. Keep that work out of the scheduler series
while leaving its working-tree contents untouched.
Track the LGMP serial for each accepted frame-schedule message and wait
for its acknowledgement before sending another. Preserve pending RESET,
IMMEDIATE, and feedback state after definite enqueue failures.
Use bounded retry polling and request one fresh immediate frame after an
ambiguous pointer-queue fault recovers.
