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[AZ-294] [AZ-295] [AZ-296] Finish C13: tile snapshot + record-kind policy + takeoff abort

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AZ-294: MidFlightTileSnapshotSink writes orthorectified tile JPEGs
atomically to flight_root/<flight_id>/tiles/<tile_id>.jpg, emits a
kind="mid_flight_tile_snapshot" pointer record, and evicts the oldest
tile when the per-flight 64 MiB cap is exceeded. Adds optional
frame_id to the snapshot payload (fdr_record_schema bump).

AZ-295: RecordKindPolicy with two paired gates:
- enforce_or_raise (producer-side) raises RawFrameWriteForbiddenError
  for raw_nav_frame / raw_ai_cam_frame at the call site, defending
  AC-8.5 / RESTRICT-UAV-4.
- gate_for_writer (writer-side) tumbling-window rate-caps
  failed_tile_thumbnail records at <= 0.1 Hz; over-cap drops are
  coalesced into kind="overrun" records with the originating
  producer slug.

AZ-296: take_off() composition-root sequence with strict ordering
(writer.__init__ -> start -> open_flight -> fc_adapter.__init__ ->
fc_adapter.open). On FdrOpenError, logs ERROR record, calls
writer.stop(), prints the documented FATAL line to stderr, and
sys.exit(EXIT_FDR_OPEN_FAILURE=2). composition_root_protocol bumped
to v1.1.0 with the new constants + takeoff-sequence section.

29 new tests; full suite 356 passed / 2 skipped / 0 failures.
No new dependencies (stdlib only).

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Oleksandr Bezdieniezhnykh
2026-05-11 03:52:07 +03:00
parent b5dd6031d2
commit e4ecdaf619
21 changed files with 1657 additions and 9 deletions
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_docs/02_document/contracts/shared_fdr_client/fdr_record_schema.md
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@@ -50,7 +50,7 @@ class FdrRecord:
| `overrun` | E-CC-FDR-CLIENT itself | `{producer_id, dropped_count}` (`dropped_count > 0`) | AC-NEW-3: never silent. Emitted by drop-oldest hook |
| `segment_rollover` | E-C13 (writer) | `{old_segment, new_segment, total_bytes_after}` | Emitted on segment rotation, including 64 GB-cap drops |
| `failed_tile_thumbnail` | C6 / C11 | `{frame_id, tile_id, jpeg_bytes_b64}` (≤ 0.1 Hz rate cap) | AC-8.5 forensic exception |
| `mid_flight_tile_snapshot` | C13 (snapshot path) | `{snapshot_path, captured_at}` | AC-8.4 mid-flight snapshot pointer |
| `mid_flight_tile_snapshot` | C13 (snapshot path) | `{snapshot_path, captured_at, frame_id?}` | AC-8.4 mid-flight snapshot pointer (envelope `producer_id="shared.fdr_client"`); `frame_id` optional (AZ-294) |
| `flight_header` | C13 (writer) | `{flight_id, flight_started_at_iso, flight_started_at_monotonic_ns, config_snapshot, signing_key_rotation_event, manifest_content_hashes, build_info}` | Single record at flight open (envelope `producer_id="shared.fdr_client"`) |
| `flight_footer` | C13 (writer) | `{flight_id, flight_ended_at_iso, flight_ended_at_monotonic_ns, records_written, records_dropped_overrun, bytes_written, rollover_count, clean_shutdown}` | Single record at flight close (envelope `producer_id="shared.fdr_client"`) |