* fix(tool): clarify semantic_search returns snippets not file paths
The first description bullet read "Find files most relevant to the
search query using semantic search.", which led an AI agent to tell a
user that the tool returns file paths only. The tool actually returns
matching content with file paths, line ranges, and relevance scores.
Updates the first two description bullets to name the output shape
directly. No runtime change.
Closes#9767.
* test(cli): cover semantic_search description
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Co-authored-by: marius-kilocode <marius@kilocode.ai>
Truffle
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