Redline Retained Replay

redline-retained-replay

Thin discovery/route hook only. Normative procedure lives in docs/REDLINE.md. Validation harness ownership lives in docs/VALIDATION.md. Runtime source is authoritative for executable behavior. Do not treat this skill as a second manual.

Reach for this when

• Admitting a model to retained AQL or retained PM4
• Changing recorder coverage, launch/kernarg identity, artifacts, effects, or bindings
• Changing retained-plan construction, PM4 lowering, or queue/hazard policy
• Changing model reset, pointer lifetime, replay failure, or fallback behavior
• Changing a kernel, fusion, Radiowave, or scheduling overlay on a retained route
• Making a benchmark or product claim attributed to Redline

Not Redline

• Ordinary serial HIP
• HipGraph stream capture/replay
• Launch-count reduction or fusion on a serial-HIP path
• A stable partial recorder fingerprint without a complete retained tape
• Experimental direct-KMD crates/redline (not the serving transport)
• Prefill, speculative/MTP, or another non-plain-AR path merely because it can be captured

Three-crate distinction

Product integration uses rdna-compute::replay::ReplayController via Gpu. That does not make rdna-compute a fourth Redline transport crate.

Read next (canonical owners)

1. Full procedure + terminology — docs/REDLINE.md
2. Porting recipe — §5
3. Certification / route-proof ladder — §7
4. Benchmark record schema + claim language — §8
5. New-route checklist — §12
6. Harness ownership — docs/VALIDATION.md (redline_daemon_harness.py = discovery/correctness under manual capture; not product timed-arm route proof alone)
7. Env knobs (mutable inventory) — docs/env-vars.md Redline section; do not restate here

Fail-closed stops

• No C/A attestation from this skill.
• Tooling-gap stop: manual shadow/capture report + product timing report cannot be stitched into positive timed-arm route proof. Stop full Redline-attributed promotion until a route-proof-capable product report records controller, observed-replay, transport, and anti-fallback evidence required by REDLINE §7.
• Discovery evidence (phase fingerprint, shadow/parity under HIPFIRE_REPLAY_MANUAL_CAPTURE) ≠ installed/routed product PM4. Promotion stays policy-gated by REDLINE + admissions ownership in VALIDATION.
• Historical benchmarks remain historical; redline performance is not route-certified without same-report timed-arm proof.

Workflow

1. Confirm the change is in scope (above). If not, stop — use ordinary HIP/kernel skills.
2. Read docs/REDLINE.md for the exact lifecycle, ownership, and certification ladder.
3. Pick harnesses only from docs/VALIDATION.md (do not invent gates).
4. Never claim Redline speedup without proving the retained route was active (controller + observed replay + transport + anti-fallback per §7–§8).