docs(joinir): Phase 56 - Ownership-Relay Design + interface skeleton
「読むのは自由、管理は直下 owned だけ」アーキテクチャの設計文書と型定義。
Key changes:
- Design doc: phase56-ownership-relay-design.md
- Core definitions: owned/carriers/captures/relay
- Invariants: Ownership Uniqueness, Carrier Locality, Relay Propagation
- Shadowing rules, multi-writer merge semantics
- JoinIR mapping from current system to new system
- Implementation phases roadmap (56-61)
- New module: src/mir/join_ir/ownership/
- types.rs: ScopeId, ScopeOwnedVar, RelayVar, CapturedVar, OwnershipPlan
- mod.rs: Module documentation with responsibility boundaries
- README.md: Usage guide and examples
- API methods:
- OwnershipPlan::carriers() - owned AND written variables
- OwnershipPlan::condition_only_carriers() - condition-only carriers
- OwnershipPlan::verify_invariants() - invariant checking
Tests: 942/942 PASS (+3 unit tests)
Zero behavioral change - analysis module skeleton only.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2d10c5ce3f