OptionalfatalRetrying cannot help (e.g. a fold conflict = plan defect): escalate now.
OptionalharvestPresent when the dispatcher harvested the agent's work to a branch the
engine folds (the remote runner, run "runner-agent" ADR-3/ADR-4). base
is the commit the harvest branch was committed on top of (the dispatch's
pinned base OID) — what the fold rebases onto the run tip. Null/unset
for the local headless dispatcher, which leaves working-tree changes for
the engine's own local checkout to carry directly on the run branch.
OptionalrefusedNo process was ever spawned (#155): the dispatch was refused before the harness ran — a held checkout, a preflight error. True cost is zero and the ledger says so; the entry is neither a failure nor a retry spent, because the agent never got to try.
OptionalresumeA resume was asked for and the harness would not take it, so the dispatch ran fresh instead (#181). The engine logs it; nothing else changes — every other field here belongs to the fresh attempt.
OptionalsessionThe harness's own session for this dispatch (#181), when its manifest says where to read one. The engine records it on the ledger entry, so a retry of the same role+task+round can resume where this attempt got to.
Reported by the harness, when its manifest says how to read it.