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Compass Engineering Docs

DL-318

Pre-stream/inner error and abort content surface on the session trace as a dedicated SessionError message (compass.v1.SessionEvent oneof field 10) with a SessionErrorKind discriminator (ERROR | ABORTED), a failure message, and an optional HTTP status — not SessionNotice, not a comms Message block (RIG-2616)

Status: Active (Matt, 2026-09-02)

Record: ../../agent/compass-agent-error-abort-surfacing/design.md