Progressive disclosure

Repair lab: a harness that sends every tool's full description on every turn pays for tools it never uses. Send a short list, one line per tool, load a full description only when a request needs it, search when no line fits, and add new tools at the end so what was already sent never changes. Catch a draft test that could not fail, measure the cut on 16 made-up tools, and read what the published sources do and do not measure.

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