The session log

A session is a directory. A turn is one JSON object per line in events.jsonl:

{ "id": "e1", "at": "2026-09-29T00:00:00.000Z", "turnId": "t1", "kind": "user_ask", "body": { "text": "..." } }

meta.json holds what does not change event by event: the id, the workspace, the model, the timestamps, the status, and the exact paths and argv one allow_session answer remembered.

Events to cards

view::read turns a session directory into { status, cards, revision }, where revision is the number of events and status is the meta’s. Five kinds of event open a card, and three draw nothing:

Event	Card
user_ask	ask, with the text
question	question, with the text, the choices, and the answer once it is in
permission	permission, with the action, the path, the diff or the argv, and the decision
result	result, with the text
proof	proof, with what was written, the diffstat, and the checks that failed
model_message, tool_call, tool_result	none, and no tool name anywhere in the cards

That last row is the whole point. The log holds every tool call the model made, so a read is in the transcript and its return is too, and neither reaches the screen.

An answer changes a card

An answer changes a card rather than adding one. Once a write is allowed, the card reads Allowed replace of README.md and the diff and the argv are gone from the view, because the user is no longer being asked. The log keeps both, so the evidence survives a reload:

{ "id": "c2", "kind": "permission", "at": "2026-09-29T00:00:00.000Z",
  "body": { "action": "Replace README.md", "path": "/w/README.md",
            "timeoutSec": null, "decision": "Allowed replace of README.md" } }

Proof

Once a turn is done, its proof card lists every closeout item that ran, in the order they ran, with the kind the file named and the outcome of each:

▎ PROOF
│ Wrote README.md
│ M README.md
│ README.md | 1 +
│ ✓ test  command  passed
│ ✗ lint  command  failed

A turn that ran no items lists none rather than hiding the list, so the difference is visible.