**Critical Fixes:**
- Replace happy_path_error__with_fallback debug calls with proper logger methods in mcp-server.ts
- All HTTP API calls now use logger.debug/error for consistent logging
**Code Quality Improvements:**
- Extract 90-day recency window magic numbers to named constants
- Added RECENCY_WINDOW_DAYS and RECENCY_WINDOW_MS constants in SearchManager
**Documentation:**
- Document model cost implications of Haiku → Sonnet upgrade in CHANGELOG
- Provide clear migration path for users who want to revert to Haiku
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Alex Newman
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