🎉 Phase 11.8/12.7: MIR Core-13 完全実装 + 糖衣構文ドキュメント更新

主要な変更:
- MIR Core-13命令セット確定（Load/Store削除の革命的設計）
  - Const, BinOp, Compare（値・計算）
  - Jump, Branch, Return, Phi（制御）
  - Call, BoxCall, ExternCall（呼び出し）
  - TypeOp, Safepoint, Barrier（メタ）
- Phase 12.7糖衣構文ドキュメント整理（超圧縮重視、可逆変換保証）
- MIRビルダーのモジュール分割完了
- vtableテストスイート拡充
- AI協調開発ツール追加（並列リファクタリング支援）

詳細:
- src/mir/instruction_introspection.rs: core13_instruction_names()追加
- MIRビルダー分割: decls.rs, exprs_*.rs, fields.rs
- plugin_loader_v2: errors.rs, host_bridge.rs分離
- 論文用データ: mir13-final.md作成

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

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

src/tests/vtable_array_ext.rs

@@ -0,0 +1,61 @@
+#[test]
+fn vtable_array_push_get_len_pop_clear() {
+    use crate::backend::vm::VM;
+    use crate::mir::{MirModule, MirFunction, FunctionSignature, MirInstruction, EffectMask, BasicBlockId, ConstValue, MirType};
+    std::env::set_var("NYASH_ABI_VTABLE", "1");
+
+    // Case 1: push("x"); get(0)
+    let sig = FunctionSignature { name: "main".into(), params: vec![], return_type: MirType::String, effects: EffectMask::PURE };
+    let mut f = MirFunction::new(sig, BasicBlockId::new(0));
+    let bb = f.entry_block;
+    let arr = f.next_value_id();
+    f.get_block_mut(bb).unwrap().add_instruction(MirInstruction::NewBox { dst: arr, box_type: "ArrayBox".into(), args: vec![] });
+    let sval = f.next_value_id();
+    f.get_block_mut(bb).unwrap().add_instruction(MirInstruction::Const { dst: sval, value: ConstValue::String("x".into()) });
+    f.get_block_mut(bb).unwrap().add_instruction(MirInstruction::BoxCall { dst: None, box_val: arr, method: "push".into(), args: vec![sval], method_id: None, effects: EffectMask::PURE });
+    let idx0 = f.next_value_id();
+    f.get_block_mut(bb).unwrap().add_instruction(MirInstruction::Const { dst: idx0, value: ConstValue::Integer(0) });
+    let got = f.next_value_id();
+    f.get_block_mut(bb).unwrap().add_instruction(MirInstruction::BoxCall { dst: Some(got), box_val: arr, method: "get".into(), args: vec![idx0], method_id: None, effects: EffectMask::PURE });
+    f.get_block_mut(bb).unwrap().add_instruction(MirInstruction::Return { value: Some(got) });
+    let mut m = MirModule::new("arr_push_get".into()); m.add_function(f);
+    let mut vm = VM::new();
+    let out = vm.execute_module(&m).expect("vm exec");
+    assert_eq!(out.to_string_box().value, "x");
+
+    // Case 2: push("y"); pop() -> "y"
+    let sig2 = FunctionSignature { name: "main".into(), params: vec![], return_type: MirType::String, effects: EffectMask::PURE };
+    let mut f2 = MirFunction::new(sig2, BasicBlockId::new(0));
+    let bb2 = f2.entry_block;
+    let a2 = f2.next_value_id();
+    f2.get_block_mut(bb2).unwrap().add_instruction(MirInstruction::NewBox { dst: a2, box_type: "ArrayBox".into(), args: vec![] });
+    let y = f2.next_value_id();
+    f2.get_block_mut(bb2).unwrap().add_instruction(MirInstruction::Const { dst: y, value: ConstValue::String("y".into()) });
+    f2.get_block_mut(bb2).unwrap().add_instruction(MirInstruction::BoxCall { dst: None, box_val: a2, method: "push".into(), args: vec![y], method_id: None, effects: EffectMask::PURE });
+    let popped = f2.next_value_id();
+    f2.get_block_mut(bb2).unwrap().add_instruction(MirInstruction::BoxCall { dst: Some(popped), box_val: a2, method: "pop".into(), args: vec![], method_id: None, effects: EffectMask::PURE });
+    f2.get_block_mut(bb2).unwrap().add_instruction(MirInstruction::Return { value: Some(popped) });
+    let mut m2 = MirModule::new("arr_pop".into()); m2.add_function(f2);
+    let mut vm2 = VM::new();
+    let out2 = vm2.execute_module(&m2).expect("vm exec");
+    assert_eq!(out2.to_string_box().value, "y");
+
+    // Case 3: push("z"); clear(); len() -> 0
+    let sig3 = FunctionSignature { name: "main".into(), params: vec![], return_type: MirType::Integer, effects: EffectMask::PURE };
+    let mut f3 = MirFunction::new(sig3, BasicBlockId::new(0));
+    let bb3 = f3.entry_block;
+    let a3 = f3.next_value_id();
+    f3.get_block_mut(bb3).unwrap().add_instruction(MirInstruction::NewBox { dst: a3, box_type: "ArrayBox".into(), args: vec![] });
+    let z = f3.next_value_id();
+    f3.get_block_mut(bb3).unwrap().add_instruction(MirInstruction::Const { dst: z, value: ConstValue::String("z".into()) });
+    f3.get_block_mut(bb3).unwrap().add_instruction(MirInstruction::BoxCall { dst: None, box_val: a3, method: "push".into(), args: vec![z], method_id: None, effects: EffectMask::PURE });
+    f3.get_block_mut(bb3).unwrap().add_instruction(MirInstruction::BoxCall { dst: None, box_val: a3, method: "clear".into(), args: vec![], method_id: None, effects: EffectMask::PURE });
+    let ln = f3.next_value_id();
+    f3.get_block_mut(bb3).unwrap().add_instruction(MirInstruction::BoxCall { dst: Some(ln), box_val: a3, method: "len".into(), args: vec![], method_id: None, effects: EffectMask::PURE });
+    f3.get_block_mut(bb3).unwrap().add_instruction(MirInstruction::Return { value: Some(ln) });
+    let mut m3 = MirModule::new("arr_clear_len".into()); m3.add_function(f3);
+    let mut vm3 = VM::new();
+    let out3 = vm3.execute_module(&m3).expect("vm exec");
+    assert_eq!(out3.to_string_box().value, "0");
+}
+