Reviewed all remaining high-severity issues from code review:
Issues #6, #7 (Input validation): Already implemented in validators.py
- hold_runners validation: lines 71-77
- steal_attempts validation: lines 156-165
- Called from submit_defensive_decision and submit_offensive_decision
Issue #8 (Hardcoded inning limit): Deferred to next sprint
- Requires config system changes across validators.py and game_models.py
- Appropriate for technical debt phase
Issue #9 (Cleanup on abandon): Already fixed (part of Issue #3)
- _cleanup_game_resources() called in end_game() at line 1109
Issue #10 (Direct state mutation): Architectural acknowledgment
- Current pattern with debug logging throughout
- Consider immutable state pattern for v2 if auditability needed
Issue #11 (Logger singleton): Verified correct
- Module-level singleton at line 34, outside class
All high-priority issues now addressed or appropriately deferred.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Issue #5 from code review - resolve_play and resolve_manual_play shared
~70% of their code causing maintenance burden and divergent behavior risk.
Changes:
- Extracted common finalization logic to new _finalize_play() method
- resolve_play reduced from ~150 lines to ~60 lines
- resolve_manual_play reduced from ~135 lines to ~60 lines
- Single source of truth for: roll tracking, state capture, transaction
handling, inning advance, cleanup, and state updates
Benefits:
- Changes to play finalization only need to be made in one place
- Reduced risk of divergent behavior between resolution modes
- Better testability and maintainability
All 739 unit tests passing (1 flaky probabilistic test occasionally fails).
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Issue #4 from code review - multi-step database operations were not
wrapped in transactions, risking partial state on failure.
Changes:
- Modified save_play() and update_game_state() in DatabaseOperations
to accept optional session parameter for transaction grouping
- Wrapped resolve_play() DB operations in single atomic transaction
- Wrapped resolve_manual_play() DB operations in single atomic transaction
- Transaction commits atomically or rolls back entirely on failure
Pattern: When session provided, use flush() for IDs without committing;
caller controls transaction. When no session, create internal transaction.
All 739 unit tests passing.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Created backend/.claude/DATABASE_SCHEMA.md with full table details
- Updated database/CLAUDE.md to reference the new schema doc
- Preserves valuable reference material while keeping CLAUDE.md concise
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Replaced awkward "lookback" pattern with clean "prepare → execute → save"
orchestration that captures state snapshots BEFORE each play.
Key improvements:
- Added per-team batter indices (away_team_batter_idx, home_team_batter_idx)
- Added play snapshot fields (current_batter/pitcher/catcher_lineup_id)
- Added on_base_code bit field for efficient base situation queries
- Created _prepare_next_play() method for snapshot preparation
- Refactored start_game() with hard lineup validation requirement
- Refactored resolve_play() with explicit 6-step orchestration
- Updated _save_play_to_db() to use snapshots (no DB lookbacks)
- Enhanced state recovery to rebuild from last play (single query)
- Added defensive lineup position validator
Benefits:
- No special cases for first play
- Single source of truth in GameState
- Saves 18+ database queries per game
- Fast state recovery without replay
- Complete runner tracking (before/after positions)
- Explicit orchestration (easy to debug)
Testing:
- Added 3 new test functions (lineup validation, snapshot tracking, batting order)
- All 5 test suites passing (100%)
- Type checking cleaned up with targeted suppressions for SQLAlchemy
Documentation:
- Added comprehensive "Type Checking & Common False Positives" section to CLAUDE.md
- Created type-checking-guide.md and type-checking-summary.md
- Added mypy.ini configuration for SQLAlchemy/Pydantic
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
