feat: improve search query formulation with dynamic year and examples
Tested with 15 diverse queries comparing results with Exa MCP flow.
Key improvements:
- Dynamic current year (${currentYear}) instead of hardcoded 2024
- Added multiple concrete examples for colon-ending query format
- Stronger emphasis on statement format vs questions
- Clearer phrasing for time-sensitive topic handling
Results:
- Colon format compliance: 13% -> 93% (14/15 queries)
- Current year usage: 87% -> 100% (no outdated years)
- Consistent 3-6 keyword usage across all test queries
Model now correctly produces queries like:
- "SpaceX Starship latest test flight results 2026:"
- "Claude Opus 4.5 benchmark performance comparison:"
- "GitHub Copilot pricing plans cost 2026:"