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Sequence diagram covering the two-channel IPC architecture between the PLDM FirmwareDevice service and the orchestrator. Covers the notify channel (pre-transfer veto), intake channel (offer/write/complete/poll), async effect chain with poll_stage, USER signal nudge, and FD-initiated PLDM commands. Includes verified findings: USER signal is level-triggered (no lost wakeups), MCTP server buffers 4 messages independently while PLDM is in a transact, and poll_stage worst case is bounded by flash erase time. Assisted-by: Claude
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Summary
Rendered diagram: https://claude.ai/code/artifact/02aaee3c-a2fa-4d7e-8753-c84a0331a39d
Open questions in the diagram:
Test plan
Assisted-by: Claude