Phase 75 pilots BindingId-based variable lookup in the ScopeManager and
ConditionEnv components. Demonstrates "BindingId priority → name fallback"
strategy with comprehensive testing and zero production impact.
Changes:
- scope_manager.rs: Added lookup_with_binding() trait method
- condition_env.rs: Implemented resolve_var_with_binding() with 3-tier fallback
- expr_lowerer.rs: Integrated pilot lookup paths
- condition_lowering_box.rs: Updated with BindingId support
Tests: 3/3 new pilot tests PASS (priority/fallback/legacy)
Tests: lib 958/958 PASS, normalized_dev 54/54 PASS (no regressions)
Design: Feature-gated with normalized_dev, enables Phase 76 expansion.
🤖 Generated with Claude Code
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
