get_tool_index() calls index_builtin_tools() on first init
(src/tool_index.py:469-470), and _warmup_tool_index then calls it
explicitly right after. Every cold boot embeds all 58 built-in tools
twice and double-upserts them into the ChromaDB collection.
The remaining get_tools_for_query call still pre-warms the query path.
Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>
