- Enable pytest-xdist with -n auto for parallel test execution - Consolidate migrated_db fixture in conftest.py (was duplicated in 4 files) - Remove local fixture definitions and unused imports from test files Test execution: ~24s -> ~5s (~5x speedup) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>