Three agents committed to this repository in one night and `git log` could not tell
them apart. `Co-Authored-By` says "an agent", which stopped being useful the moment
there was more than one.
So a trailer carrying the transcript id — not the session name, because names are
renamed by restarts and two sessions were renamed in a single night while their
transcript ids survived. The transcript holds the reasoning a commit message
cannot: what was considered and dropped, what was measured, what the owner decided.
A commit that names its session is one whose "why" is still answerable later.
The precondition is not built and is now a todo: an agent cannot reliably discover
its own transcript id. No environment variable carries it and the only exposure is
a background task's output path, so learning who you are means starting a job you
do not need. `commanderBlock` already hands a commander its id, so the mechanism
exists for one case and wants generalising.
Until then: an agent that knows its id adds the trailer, one that does not leaves it
out rather than guessing.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Officer-Session: 656f5c85-e49a-4f1f-b9f3-042a04b4d043
