- Fix helpers.rs tests to use new MirFunction::new(FunctionSignature, BasicBlockId) API - Update continuation_contract.rs import path to use rewriter::helpers - Add TODO comment for future exit_collection integration - All 6 rewriter tests pass The exit_collection module is complete and tested but full integration with instruction_rewriter.rs deferred (80/20 rule - logging context and flow control require careful refactoring). 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>