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v2.3.3
Fixed
A single prompt that ran the agent through a lot of turns was captured as nothing at all.
The task would finish, you would run /capture-notes, and it would tell you it was never asked to write anything up, even though the agent had just read and edited a pile of files.
The capture hook keeps a marker in the OS temp directory holding how far it has read into the conversation transcript, so each stop only processes the new lines. Temp gets swept every few days and the transcript does not, so a session picked back up across days keeps losing that offset while the full history stays on disk. The guard for that read "transcript over 400 lines" as "already accounted for", jumped the offset to the end of the file and recorded nothing.
Line count cannot answer that question. Every tool call writes a couple of transcript lines, so an ordinary busy session crosses 400 in one sitting. Long tasks were being mistaken for stale history and everything they touched was dropped. Measured before the fix: 24 discards across 8 sessions, all spanning 5 to 11 days, one of them hit six separate times.
The hook now asks the durable record instead of guessing from size. capture.jsonl lives in the repo, is append only, and stamps every fire with a session id and timestamp, so it survives the sweep that eats the marker. When the marker is missing it finds the newest fire for that session, finds the first transcript line stamped after it, and resumes there. Everything before that point was already put in front of the agent, everything after it never was.
Both unknowns fail towards replay rather than skipping. A session with no fire on record replays in full however large, and so does one whose boundary cannot be placed, because being asked twice is cheap and losing unasked work is not.
Costs 0.6ms to read the record plus 25ms to find the line on the largest transcript measured (39k lines, 126MB), and it skips roughly 25k already-offered lines, so it does less work than the replay it replaces.
Install: npm i -g @cstart/coldstart