Comprehensive migration plan covering: - Migration pattern (before/after examples) - Services prioritized by impact (18 services, 60 commits) - Step-by-step migration process - Testing strategy - Rollback procedures - Progress tracking commands This supports gradual migration from service-level commits to endpoint-level transaction control. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>