🚀 Phase 10.11: Everything is Plugin革命完了！

主な変更:
- ConsoleBox/MathBoxプラグイン実装・登録完了
- nyash_box.toml 2ファイルシステム設計（中央レジストリ+個別仕様書）
- 全プラグインにnyash_box.tomlテンプレート追加
- プラグイン優先機能（NYASH_USE_PLUGIN_BUILTINS=1）文書化
- ビルトインBox削除準備（ChatGPT5実装中）
- ネイティブビルドデモ追加（Linux/Windows動作確認済み）

Everything is Box → Everything is Plugin への歴史的転換！
開発20日目にしてビルトインBox全削除という革命的決定。

🤖 Generated with Claude Code

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

tools/smoke_plugins.sh

@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR=$(cd "$(dirname "$0")/.." && pwd)
+BIN="$ROOT_DIR/target/release/nyash"
+
+if [[ ! -x "$BIN" ]]; then
+  echo "[smoke] building nyash (release, cranelift-jit)..." >&2
+  (cd "$ROOT_DIR" && cargo build --release --features cranelift-jit >/dev/null)
+fi
+
+# Build required plugins (release)
+build_plugin() {
+  local dir=$1
+  if [[ -d "$ROOT_DIR/$dir" ]]; then
+    echo "[smoke] building $dir ..." >&2
+    (cd "$ROOT_DIR/$dir" && cargo build --release >/dev/null)
+  fi
+}
+
+build_plugin plugins/nyash-python-plugin
+build_plugin plugins/nyash-integer-plugin
+build_plugin plugins/nyash-console-plugin
+build_plugin plugins/nyash-math-plugin
+
+export NYASH_CLI_VERBOSE=1
+export NYASH_PLUGIN_STRICT=1
+export NYASH_USE_PLUGIN_BUILTINS=1
+export NYASH_PLUGIN_OVERRIDE_TYPES="ArrayBox,MapBox,ConsoleBox"
+
+run_case() {
+  local name=$1
+  local file=$2
+  echo "[smoke] case=$name file=$file" >&2
+  "$BIN" --backend vm "$ROOT_DIR/$file" >/dev/null
+  echo "[smoke] ok: $name" >&2
+}
+
+# Core plugin demos
+run_case py_math_sqrt_demo examples/py_math_sqrt_demo.nyash
+run_case integer_plugin_demo examples/integer_plugin_demo.nyash
+run_case console_demo examples/console_demo.nyash
+run_case math_time_demo examples/math_time_demo.nyash
+
+echo "[smoke] all green" >&2
+
+# Second pass: disable builtins and re-run key cases
+echo "[smoke] second pass with NYASH_DISABLE_BUILTINS=1" >&2
+NYASH_DISABLE_BUILTINS=1 \
+  "$BIN" --backend vm "$ROOT_DIR/examples/console_demo.nyash" >/dev/null
+NYASH_DISABLE_BUILTINS=1 \
+  "$BIN" --backend vm "$ROOT_DIR/examples/math_time_demo.nyash" >/dev/null
+echo "[smoke] all green (builtins disabled)" >&2