diff --git a/local_tests/test_filebox_v2.nyash b/local_tests/test_filebox_v2.nyash
new file mode 100644
index 00000000..49b1bc48
--- /dev/null
+++ b/local_tests/test_filebox_v2.nyash
@@ -0,0 +1,13 @@
+// FileBox v2プラグインシステムテスト
+print("=== FileBox v2 Plugin Test ===")
+
+// FileBoxを生成してみる
+print("Creating FileBox instance...")
+local fileBox
+fileBox = new FileBox()
+
+// ファイル情報を表示
+print("FileBox created: " + fileBox.toString())
+
+// とりあえずここまでで動作確認
+print("=== Test completed ===")
\ No newline at end of file
diff --git a/src/bid/generic_plugin_box.rs b/src/bid/generic_plugin_box.rs
index 57dfd576..1d1d32bf 100644
--- a/src/bid/generic_plugin_box.rs
+++ b/src/bid/generic_plugin_box.rs
@@ -109,15 +109,9 @@ impl NyashBox for GenericPluginBox {
     }
     
     fn clone_box(&self) -> Box<dyn NyashBox> {
-        // 新しいインスタンスを作成
-        if let Some(reg) = crate::bid::registry::global() {
-            if let Some(plugin) = reg.get_by_name(&self.box_name) {
-                if let Ok(new_box) = GenericPluginBox::birth(plugin, self.box_name.clone()) {
-                    return Box::new(new_box);
-                }
-            }
-        }
-        Box::new(StringBox::new("<plugin clone failed>"))
+        // v2 plugin system migration: simplified clone for now
+        // TODO: Implement proper cloning through v2 plugin loader
+        Box::new(StringBox::new(format!("{}(plugin-clone)", self.box_name)))
     }
     
     fn share_box(&self) -> Box<dyn NyashBox> {
diff --git a/src/bid/mod.rs b/src/bid/mod.rs
index bf3f2382..92fb33e1 100644
--- a/src/bid/mod.rs
+++ b/src/bid/mod.rs
@@ -9,7 +9,7 @@ pub mod plugin_api;
 pub mod bridge;
 pub mod plugins;
 pub mod loader;
-pub mod registry;
+// pub mod registry;  // legacy - v2 plugin system uses BoxFactoryRegistry instead
 // pub mod plugin_box;  // legacy - FileBox専用実装
 pub mod generic_plugin_box;
 
@@ -20,7 +20,7 @@ pub use metadata::*;
 pub use plugin_api::*;
 pub use bridge::*;
 pub use loader::*;
-pub use registry::*;
+// pub use registry::*;  // legacy - v2 plugin system uses BoxFactoryRegistry instead
 // pub use plugin_box::*;  // legacy
 pub use generic_plugin_box::*;
 
diff --git a/src/interpreter/objects.rs b/src/interpreter/objects.rs
index 095badb6..6b222e18 100644
--- a/src/interpreter/objects.rs
+++ b/src/interpreter/objects.rs
@@ -640,6 +640,7 @@ impl NyashInterpreter {
             });
         }
         
+        /* v2 plugin system migration - old BID registry disabled
         // 🚀 プラグインレジストリをチェック（nyash.tomlから動的）
         let plugin_exists = if let Some(reg) = crate::bid::registry::global() {
             reg.get_by_name(class).is_some()
@@ -664,6 +665,14 @@ impl NyashInterpreter {
         if plugin_exists {
             if let Some(reg) = crate::bid::registry::global() {
                 if let Some(plugin) = reg.get_by_name(class) {
+        */
+        
+        // ユーザー定義Box宣言をチェック
+        let user_defined_exists = {
+            let box_decls = self.shared.box_declarations.read().unwrap();
+            box_decls.contains_key(class)
+        };
+        /* continuing old BID registry code - disabled for v2
                     // プラグイン版：引数なしでbirthメソッド呼び出し（nyash.tomlに従う）
                     if arguments.len() == 0 {
                         // 汎用プラグインBox生成システム
@@ -682,6 +691,7 @@ impl NyashInterpreter {
                 }
             }
         }
+        */
         
         // ユーザー定義Box宣言を探す
         if user_defined_exists {
diff --git a/src/lib.rs b/src/lib.rs
index 342deba9..da29e7df 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -48,6 +48,9 @@ pub mod bid;
 // Configuration system
 pub mod config;
 
+// CLI system
+pub mod cli;
+
 // Runtime system (plugins, registry, etc.)
 pub mod runtime;
 
diff --git a/src/main.rs b/src/main.rs
index 34de4254..a1dfce66 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -45,7 +45,7 @@ pub mod runner;
 // BID-FFI / Plugin System (prototype)
 pub mod bid;
 
-use cli::CliConfig;
+use nyash_rust::cli::CliConfig;
 use runner::NyashRunner;
 
 /// Thin entry point - delegates to CLI parsing and runner execution
diff --git a/src/runner.rs b/src/runner.rs
index 920fb5ac..ddbc526d 100644
--- a/src/runner.rs
+++ b/src/runner.rs
@@ -5,8 +5,8 @@
  * separated from CLI parsing and the main entry point.
  */
 
-use crate::cli::CliConfig;
-use crate::{
+use nyash_rust::cli::CliConfig;
+use nyash_rust::{
     box_trait::{NyashBox, StringBox, IntegerBox, BoolBox, VoidBox, AddBox, BoxCore},
     tokenizer::{NyashTokenizer},
     ast::ASTNode,
@@ -17,11 +17,11 @@ use crate::{
 };
 
 #[cfg(feature = "llvm")]
-use crate::backend::{llvm_compile_and_execute};
+use nyash_rust::backend::{llvm_compile_and_execute};
 use std::{fs, process};
 
 // v2 plugin system imports
-use crate::runtime::init_global_loader_v2;
+use nyash_rust::runtime::{init_global_loader_v2, get_global_registry, get_global_loader_v2, PluginConfig};
 
 /// Main execution coordinator
 pub struct NyashRunner {
@@ -57,7 +57,7 @@ impl NyashRunner {
     }
 
     fn init_bid_plugins(&self) {
-        // Best-effort init; do not fail the program if missing
+        // v2プラグインシステムを初期化
         eprintln!("🔍 DEBUG: Initializing v2 plugin system");
         
         // Try to load nyash.toml configuration
@@ -65,8 +65,6 @@ impl NyashRunner {
             println!("🔌 v2 plugin system initialized from nyash.toml");
             
             // Apply plugin configuration to the box registry
-            use crate::runtime::{get_global_registry, get_global_loader_v2};
-            
             let loader = get_global_loader_v2();
             let loader = loader.read().unwrap();
             
@@ -78,11 +76,13 @@ impl NyashRunner {
                     for box_name in &lib_def.boxes {
                         eprintln!("  📦 Registering plugin provider for {}", box_name);
                         // Note: plugin_name is lib_name in v2 system
-                        registry.apply_plugin_config(&crate::runtime::PluginConfig {
+                        registry.apply_plugin_config(&PluginConfig {
                             plugins: [(box_name.clone(), lib_name.clone())].into(),
                         });
                     }
                 }
+                
+                println!("✅ v2 plugin system fully configured");
             }
         } else {
             eprintln!("⚠️ Failed to load nyash.toml - plugins disabled");