- Add test: rejects_non_const_then_i_update - Validates that continue pattern requires `i = i + const` form - Ensures Fail-Fast behavior for unsupported step patterns Impact: - 60 normalized_dev tests PASS (+1) - Fail-Fast 仕様固定(非 const の i 更新を拒否) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>