refactor(cleanup): Phase 285A1 Post-Implementation Cleanup
Code quality improvements after Phase 285A1 implementation:
**Task 1: Dead Code Cleanup**
- Removed unnecessary #[allow(dead_code)] from emit_weak_load()
- Function is actively used in weak_to_strong() method handler
**Task 2: Unused Import Removal (cargo fix)**
- edgecfg/api/mod.rs: Removed seq, if_, loop_, cleanup, verify_frag_invariants
- pattern3.rs: Removed BinaryOperator
- pattern2/api/mod.rs: Removed PromoteStepResult
- jump.rs: Removed EffectMask, Span
- Result: 6 unused imports eliminated
**Task 3: Deprecated Pattern Removal**
- Fixed 4 PlanKind::LoopWithPost deprecated warnings
- Updated to Phase 142 P0 architecture (statement-level normalization)
- Files: normalized_shadow_suffix_router_box.rs, routing.rs,
execute_box.rs, plan.rs
- Removed 2 deprecated tests: test_loop_with_post_*
**Task 4: WeakFieldValidatorBox Boxification**
- Extracted weak field validation logic into dedicated Box
- New file: src/mir/builder/weak_field_validator.rs (147 lines)
- fields.rs: 277 → 237 lines (-40 lines, -14.4%)
- Added 5 unit tests for validation logic
- Follows Phase 33 boxification principles (single responsibility,
testability, reusability)
**Metrics**:
- Code reduction: -40 lines in fields.rs
- Test coverage: +5 unit tests
- Warnings fixed: 4 deprecated warnings
- Imports cleaned: 6 unused imports
🤖 Generated with Claude Code
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
tomoaki
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