CLAUDE: Implement Phase 3B - X-Check league config tables
Complete X-Check resolution table system for defensive play outcomes.
Components:
- Defense range tables (20×5) for infield, outfield, catcher
- Error charts for LF/RF and CF (ratings 0-25)
- Placeholder error charts for P, C, 1B, 2B, 3B, SS (awaiting data)
- get_fielders_holding_runners() - Complete implementation
- get_error_chart_for_position() - Maps all 9 positions
- 6 X-Check placeholder advancement functions (g1-g3, f1-f3)
League Config Integration:
- Both SbaConfig and PdConfig include X-Check tables
- Shared common tables via league_configs.py
- Attributes: x_check_defense_tables, x_check_error_charts, x_check_holding_runners
Testing:
- 36 tests for X-Check tables (all passing)
- 9 tests for X-Check placeholders (all passing)
- Total: 45/45 tests passing
Documentation:
- Updated backend/CLAUDE.md with Phase 3B section
- Updated app/config/CLAUDE.md with X-Check tables documentation
- Updated app/core/CLAUDE.md with X-Check placeholder functions
- Updated tests/CLAUDE.md with new test counts (519 unit tests)
- Updated phase-3b-league-config-tables.md (marked complete)
- Updated NEXT_SESSION.md with Phase 3B completion
What's Pending:
- 6 infield error charts need actual data (P, C, 1B, 2B, 3B, SS)
- Phase 3C will implement full X-Check resolution logic
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Co-Authored-By: Claude <noreply@anthropic.com>
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