feat(llvm): Phase 97 - Call/PHI/Plugin強化 + リファクタリング準備

## 概要
LLVM backend のCall処理、PHI wiring、Plugin loader を強化。
次のリファクタリング（箱化モジュール化）のための準備も含む。

## 変更内容

### LLVM Call処理強化
- `mir_call/__init__.py`: Call ルーティングロジック改善
- `mir_call/global_call.py`: print処理の marshal強化
- `mir_call/method_call.py`: メソッド呼び出し処理改善
- `boxcall.py`: BoxCall処理改善

### PHI処理強化
- `phi_manager.py`: PHI管理改善
- `phi_wiring/wiring.py`: PHI配線ロジック強化（+17行）
- `phi_wiring/tagging.py`: Type tagging改善
- `resolver.py`: Value解決ロジック強化（+34行）

### Copy伝播
- `copy.py`: Copy命令のType tag伝播追加（+10行）

### Plugin loader強化
- `library.rs`: エラー出力改善、[plugin/missing]ログ追加（+34行）
- fail-fast強化

### テスト
- `phase97_json_loader_escape_llvm_exe.sh`: Phase 97 E2Eテスト追加
- `phase97_next_non_ws_llvm_exe.sh`: Phase 97 E2Eテスト追加

### その他
- `nyash_kernel/lib.rs`: Kernel側の改善（+23行）

## 統計
- 14ファイル変更
- +256行 / -53行 = +203 net

## 次のリファクタリング準備
以下の箇所がリファクタリング対象として識別済み：
1. Call ルーティング箱の明文化
2. print の marshal 箱
3. TypeFacts/Tagging 箱の一本化
4. PHI Snapshot 契約のSSOT
5. Plugin loader のエラー出力統合

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

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

tools/smokes/v2/profiles/integration/apps/phase97_json_loader_escape_llvm_exe.sh

@@ -20,8 +20,33 @@ fi
 
 FILEBOX_SO="$NYASH_ROOT/plugins/nyash-filebox-plugin/libnyash_filebox_plugin.so"
 MAPBOX_SO="$NYASH_ROOT/plugins/nyash-map-plugin/libnyash_map_plugin.so"
+
+# Phase 98 P0: Ensure required dynamic plugin artifacts exist and are loadable.
+echo "[INFO] Ensuring plugin artifacts (FileBox/MapBox)"
+if ! bash "$NYASH_ROOT/tools/plugins/build-all.sh" nyash-filebox-plugin nyash-map-plugin >/dev/null; then
+    echo "[FAIL] tools/plugins/build-all.sh failed for FileBox/MapBox"
+    exit 1
+fi
 if [ ! -f "$FILEBOX_SO" ] || [ ! -f "$MAPBOX_SO" ]; then
-    test_skip "Required plugins not found (FileBox/MapBox)"; exit 0
+    echo "[FAIL] Required plugin artifacts still missing after build-all (FileBox/MapBox)"
+    echo "[INFO] FileBox: $FILEBOX_SO"
+    echo "[INFO] MapBox:  $MAPBOX_SO"
+    exit 1
+fi
+if ! python3 - <<PY 2>/dev/null; then
+import ctypes
+ctypes.CDLL(r"$FILEBOX_SO")
+ctypes.CDLL(r"$MAPBOX_SO")
+print("OK")
+PY
+    echo "[FAIL] Plugin dlopen check failed for FileBox/MapBox"
+    python3 - <<PY 2>&1 | tail -n 80
+import ctypes
+ctypes.CDLL(r"$FILEBOX_SO")
+ctypes.CDLL(r"$MAPBOX_SO")
+print("OK")
+PY
+    exit 1
 fi
 
 mkdir -p "$NYASH_ROOT/tmp"
@@ -32,7 +57,7 @@ OUTPUT_EXE="$NYASH_ROOT/tmp/phase97_json_loader_escape_llvm_exe"
 echo "[INFO] Building: $INPUT_HAKO → $OUTPUT_EXE"
 
 BUILD_LOG="/tmp/phase97_json_loader_escape_build.log"
-if ! env NYASH_DISABLE_PLUGINS=1 "$NYASH_ROOT/tools/build_llvm.sh" "$INPUT_HAKO" -o "$OUTPUT_EXE" 2>&1 | tee "$BUILD_LOG"; then
+if ! env NYASH_DISABLE_PLUGINS=0 "$NYASH_ROOT/tools/build_llvm.sh" "$INPUT_HAKO" -o "$OUTPUT_EXE" 2>&1 | tee "$BUILD_LOG"; then
     echo "[FAIL] build_llvm.sh failed"
     tail -n 80 "$BUILD_LOG"
     exit 1
@@ -47,7 +72,7 @@ fi
 echo "[INFO] Executing: $OUTPUT_EXE"
 
 set +e
-OUTPUT=$(timeout "${RUN_TIMEOUT_SECS:-10}" env NYASH_DISABLE_PLUGINS=1 "$OUTPUT_EXE" 2>&1)
+OUTPUT=$(timeout "${RUN_TIMEOUT_SECS:-10}" env NYASH_DISABLE_PLUGINS=0 "$OUTPUT_EXE" 2>&1)
 EXIT_CODE=$?
 set -e
 

tools/smokes/v2/profiles/integration/apps/phase97_next_non_ws_llvm_exe.sh

@@ -20,8 +20,33 @@ fi
 
 FILEBOX_SO="$NYASH_ROOT/plugins/nyash-filebox-plugin/libnyash_filebox_plugin.so"
 MAPBOX_SO="$NYASH_ROOT/plugins/nyash-map-plugin/libnyash_map_plugin.so"
+
+# Phase 98 P0: Ensure required dynamic plugin artifacts exist and are loadable.
+echo "[INFO] Ensuring plugin artifacts (FileBox/MapBox)"
+if ! bash "$NYASH_ROOT/tools/plugins/build-all.sh" nyash-filebox-plugin nyash-map-plugin >/dev/null; then
+    echo "[FAIL] tools/plugins/build-all.sh failed for FileBox/MapBox"
+    exit 1
+fi
 if [ ! -f "$FILEBOX_SO" ] || [ ! -f "$MAPBOX_SO" ]; then
-    test_skip "Required plugins not found (FileBox/MapBox)"; exit 0
+    echo "[FAIL] Required plugin artifacts still missing after build-all (FileBox/MapBox)"
+    echo "[INFO] FileBox: $FILEBOX_SO"
+    echo "[INFO] MapBox:  $MAPBOX_SO"
+    exit 1
+fi
+if ! python3 - <<PY 2>/dev/null; then
+import ctypes
+ctypes.CDLL(r"$FILEBOX_SO")
+ctypes.CDLL(r"$MAPBOX_SO")
+print("OK")
+PY
+    echo "[FAIL] Plugin dlopen check failed for FileBox/MapBox"
+    python3 - <<PY 2>&1 | tail -n 80
+import ctypes
+ctypes.CDLL(r"$FILEBOX_SO")
+ctypes.CDLL(r"$MAPBOX_SO")
+print("OK")
+PY
+    exit 1
 fi
 
 mkdir -p "$NYASH_ROOT/tmp"
@@ -32,7 +57,7 @@ OUTPUT_EXE="$NYASH_ROOT/tmp/phase97_next_non_ws_llvm_exe"
 echo "[INFO] Building: $INPUT_HAKO → $OUTPUT_EXE"
 
 BUILD_LOG="/tmp/phase97_next_non_ws_build.log"
-if ! env NYASH_DISABLE_PLUGINS=1 "$NYASH_ROOT/tools/build_llvm.sh" "$INPUT_HAKO" -o "$OUTPUT_EXE" 2>&1 | tee "$BUILD_LOG"; then
+if ! env NYASH_DISABLE_PLUGINS=0 "$NYASH_ROOT/tools/build_llvm.sh" "$INPUT_HAKO" -o "$OUTPUT_EXE" 2>&1 | tee "$BUILD_LOG"; then
     echo "[FAIL] build_llvm.sh failed"
     tail -n 80 "$BUILD_LOG"
     exit 1
@@ -47,7 +72,7 @@ fi
 echo "[INFO] Executing: $OUTPUT_EXE"
 
 set +e
-OUTPUT=$(timeout "${RUN_TIMEOUT_SECS:-10}" env NYASH_DISABLE_PLUGINS=1 "$OUTPUT_EXE" 2>&1)
+OUTPUT=$(timeout "${RUN_TIMEOUT_SECS:-10}" env NYASH_DISABLE_PLUGINS=0 "$OUTPUT_EXE" 2>&1)
 EXIT_CODE=$?
 set -e