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https://github.com/azaion/gps-denied-onboard.git
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Oleksandr Bezdieniezhnykh
362e93c626
Adds the C8 foundation: - FcAdapter / GcsAdapter / ReplaySink Protocols + contract DTOs in _types/fc.py (PortConfig, FcKind, FlightState, GpsStatus, Severity, TelemetryKind, FcTelemetryFrame, FlightStateSignal, GpsHealth, OperatorCommand, Subscription, Imu/Attitude samples). - Disjoint FcAdapterError / GcsAdapterError trees with SourceSetSwitchNotSupportedError <: SourceSetSwitchError per AC-9. - FcConfig + GcsConfig cross-cutting Config blocks with config-load validation (unknown strategy rejected at __post_init__). - runtime_root/fc_factory.py: build_fc_adapter / build_gcs_adapter with BUILD_FC_*/BUILD_GCS_* flag gating + INFO log on load + single-writer outbound-thread binding. - CovarianceProjector (helper, AZ-392): 6x6 -> 3x3 -> 2x2 -> sqrt(lambda_max) reduction; AP returns float m, iNav returns int mm with uint16 clamp + WARN + FDR record. Non-SPD / NaN / wrong-shape raise FcEmitError and emit an FDR ERROR record carrying frame_id. Contracts: - composition_root_protocol.md 1.1.0 -> 1.2.0 (added fc/gcs blocks + build_fc_adapter / build_gcs_adapter + outbound-thread binding). - fc_adapter_protocol.md unchanged (this batch implements v1.0.0). Tests: 410 pass / 2 skip / 0 fail (+53 new tests in batch 8). AZ-391 (inbound subscription) deferred to batch 9 — pulls YAMSPy as a new external dependency (iNav MSP2 decode). Co-authored-by: Cursor <cursoragent@cursor.com>