The Derkachi auto-sync coordinator compares absolute tlog timestamps
(from pymavlink's 8-byte record header) against absolute video
timestamps (CAP_PROP_POS_MSEC, which starts at 0). Anchoring the
synthetic tlog at 1_700_000_000_000_000 us (2023-11-14) produced a
~53-year offset (offset_ms=1699999995666) that always tripped the
AC-9 frame-window match validator at 0% match.
Setting the base to 0 puts the tlog on the same axis as the video
(and matches the CSV's `Time` column, which is seconds since row 0
per `_docs/00_problem/input_data/flight_derkachi/README.md`: "the
video and telemetry align at exactly three video frames per
telemetry row").
Verified on Colima with GPS_DENIED_TIER=2: the offset reported by
the auto-sync coordinator drops from 1699999995666 ms to -4334 ms.
The remaining 4.3 s offset is NOT a synth issue — it's the tlog
take-off detector (no signal in the steady-cruise CSV → defaults to
samples.accel[0][0] == 0) vs the video motion-onset detector (which
fires on a scenery-contrast false positive at ~4.3 s). The synth
cannot fabricate a take-off spike at the right time without knowing
the video motion-onset moment a priori, and the README confirms the
fixture is mid-flight footage with no take-off in either signal.
Resolving the remaining 4.3 s mismatch requires SUT-side work to
honor the documented "manual offset bypasses auto-sync" contract —
that's the scope of AZ-611. Filed as a known limitation in the
commit message; AC-1..AC-6 still red until AZ-611 lands.
Co-authored-by: Cursor <cursoragent@cursor.com>
C7 inference (PytorchFp16Runtime / TensorRTRuntime / OnnxTrtEpRuntime)
is CUDA-only by design — `model.half().cuda()` is hard-wired with no
CPU fallback. The Colima/Tier-1 smoke harness can never exercise C3
matcher or C7 inference. Once AZ-614 fixes the tlog time-base mismatch
and the pipeline reaches those stages, Colima runs would hard-fail at
`.cuda()` instead of cleanly skipping.
This commit lays down the Jetson companion harness and wires the
existing `tier2` auto-skip:
* tests/e2e/Dockerfile.jetson — l4t-pytorch:r36.4.0-pth2.3-py3 base,
same /opt layout as the Colima image so AC-4 AST scan + bind mounts
work identically. Built ON the Jetson via run-tests-jetson.sh.
* docker-compose.test.jetson.yml — mirrors docker-compose.test.yml
but with `runtime: nvidia`, GPU device exposure, and
GPS_DENIED_TIER=2 (turns OFF the tier2 auto-skip).
* scripts/run-tests-jetson.sh — rsync → ssh build → ssh up,
exit-code-from e2e-runner so the local exit code reflects the
remote test verdict. No credentials in the repo; uses
`ssh jetson-e2e` alias resolved via ~/.ssh/config.
* _docs/03_implementation/jetson_harness_setup.md — one-time SSH
key + alias + sshd hardening + GPU verification steps. Documents
the smoke vs. Reality Gate split + the GPS_DENIED_TIER switch.
AZ-617 (mark heavy ACs with tier2): adds @pytest.mark.tier2 to AC-1,
AC-2, AC-3, AC-5, AC-6 in tests/e2e/replay/test_derkachi_1min.py.
Reuses the existing tier2 marker + auto-skip in tests/conftest.py
(scope revision documented as a comment on AZ-617). AC-4a/4b/AC-7/AC-9
stay unmarked — they don't touch CUDA.
Defers to follow-up Jira:
* AZ-614 — Derkachi tlog synth time-base mismatch (unblocks tier2 ACs
actually reaching the GPU stage on the Jetson)
* AZ-616 — replace mock-sat with real ../satellite-provider service
Not run yet: the harness needs operator-side SSH setup to come online
before scripts/run-tests-jetson.sh can be executed end-to-end. Setup
steps documented in jetson_harness_setup.md.
Co-authored-by: Cursor <cursoragent@cursor.com>
All FC adapter outbound MAVLink bytes now go through the AZ-401
MavlinkTransport seam (NoopMavlinkTransport in replay,
SerialMavlinkTransport in live). New helpers in
_outbound_mavlink_payloads.py extract encode/pack/seq-bump so the four
AP _send sites and the iNav statustext _send site become
encode -> pack -> transport.write. TlogReplayFcAdapter emits real
AP-shape MAVLink bytes through the injected NoopMavlinkTransport,
satisfying replay protocol Invariant 5 and unblocking AZ-401 AC-9.
Closes AZ-558. Also unskips AZ-401 AC-9 and AZ-404 AC-4b. Live wire
output remains byte-identical (proven via two-instance MAVLink
byte-equivalence tests). AST scan asserts no .mav.<name>_send( calls
remain in the retrofit set (AP / iNav / tlog adapters).
Out of scope (logged in review): GCS adapter retrofit; airborne live
strategy registration that would activate the SerialMavlinkTransport
factory injection path.
Tests: 2110 passed, 92 environmental skips, 1 unrelated pre-existing
macOS cold-start flake deselected.
Co-authored-by: Cursor <cursoragent@cursor.com>
Add the initial source, test, infrastructure, CI, configuration, and evidence-path scaffold so dependent implementation tasks have stable package and runtime boundaries.
Co-authored-by: Cursor <cursoragent@cursor.com>
Oleksandr Bezdieniezhnykh