The preview previously showed name + prose per tool but no parameters, so
the model couldn't call a tool correctly without a $rune.describe round-trip
(or a failed guess — e.g. calling context7 resolve-library-id with only
libraryName, missing the required query). Replace the prose preview with a
compact, directly-callable input signature:
tools.context7["resolve-library-id"](input: { query: string; libraryName: string })
All namespaces are still always listed with counts; the budget now caps
inlined signatures, and the description states explicitly that any tool not
shown must be found via $rune.search/$rune.describe first. The full typed
signature (with the Promise return) and schemas remain $rune.describe-only.
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