Phase 12: 統一TypeBox ABI実装開始 - ChatGPT5による極小コアABI基盤構築

- TypeBox ABI雛形: メソッドスロット管理システム追加
- Type Registry: Array/Map/StringBoxの基本メソッド定義
- Host API: C ABI逆呼び出しシステム実装
- Phase 12ドキュメント整理: 設計文書統合・アーカイブ化
- MIR Builder: クリーンアップと分離実装完了

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/tests/identical_exec.rs

@@ -0,0 +1,44 @@
+#[cfg(test)]
+mod tests {
+    use crate::mir::{MirModule, MirFunction, FunctionSignature};
+    use crate::mir::{BasicBlockId, MirInstruction, ConstValue, EffectMask, MirType, BinaryOp};
+    use crate::backend::VM;
+
+    fn make_add_main(a: i64, b: i64) -> MirModule {
+        let sig = FunctionSignature {
+            name: "main".to_string(),
+            params: vec![],
+            return_type: MirType::Integer,
+            effects: EffectMask::PURE,
+        };
+        let mut func = MirFunction::new(sig, BasicBlockId::new(0));
+        let bb = func.entry_block;
+        let v0 = func.next_value_id();
+        func.get_block_mut(bb).unwrap().add_instruction(MirInstruction::Const { dst: v0, value: ConstValue::Integer(a) });
+        let v1 = func.next_value_id();
+        func.get_block_mut(bb).unwrap().add_instruction(MirInstruction::Const { dst: v1, value: ConstValue::Integer(b) });
+        let v2 = func.next_value_id();
+        func.get_block_mut(bb).unwrap().add_instruction(MirInstruction::BinOp { dst: v2, op: BinaryOp::Add, lhs: v0, rhs: v1 });
+        func.get_block_mut(bb).unwrap().add_instruction(MirInstruction::Return { value: Some(v2) });
+        let mut module = MirModule::new("identical".to_string());
+        module.add_function(func);
+        module
+    }
+
+    #[cfg(feature = "cranelift-jit")]
+    #[test]
+    fn identical_vm_and_jit_add() {
+        let module = make_add_main(7, 35);
+        // Run VM
+        let mut vm = VM::new();
+        let vm_out = vm.execute_module(&module).expect("VM exec");
+        let vm_s = vm_out.to_string_box().value;
+
+        // Run JIT (Cranelift minimal)
+        let jit_out = crate::backend::cranelift_compile_and_execute(&module, "identical_jit").expect("JIT exec");
+        let jit_s = jit_out.to_string_box().value;
+
+        assert_eq!(vm_s, jit_s, "VM and JIT results should match");
+    }
+}
+