# Implement Standalone Build Mode
## Description
Implement standalone_build feature to remove circular dependencies using #[path] attributes instead of Cargo deps (US-4)
## Acceptance Criteria
- [ ] Implement standalone_build feature in Cargo.toml
- [ ] Implement conditional compilation for standalone mode
- [ ] Implement #[path] attributes for direct source inclusion
- [ ] Ensure circular dependency resolution works
- [ ] Ensure foundational modules can use test_tools without cycles
- [ ] All tests from task 038 now pass
- [ ] Implement minimal code to satisfy the failing tests
## Status
📋 Ready for implementation
## Effort
6 hours
## Dependencies
- Task 038: Write Tests for Standalone Build Mode