SearchAgent generates 2-4 diverse search queries internally,
runs them against the knowledge base, deduplicates by chunk_id,
and returns consolidated results. This prevents the outer chat
agent from making multiple search calls.
Also updates system prompt to enforce single tool calls per message.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
