Ran `cargo fix --allow-dirty --lib` to automatically remove unused imports
across the codebase. This cleanup is standard maintenance and improves code
hygiene.
**Files Modified**:
- instruction_rewriter.rs: Removed 6 unused imports
- block_remapper::remap_block_id
- LoweringDecision
- ParameterBindingBox
- propagate_value_type_for_inst (2 occurrences)
- apply_remapped_terminator
- PhiAdjustment, ParameterBinding from scan_box
- Other files: Minor unused import cleanup (12 files total)
**No Functional Changes**: Pure cleanup, all tests expected to pass.
Phase 286C-5 progress: 3/4 steps complete
Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>