diff --git a/modules/home/vscode.nix b/modules/home/vscode.nix
index 179449b..9a4ec89 100644
--- a/modules/home/vscode.nix
+++ b/modules/home/vscode.nix
@@ -8,7 +8,8 @@ let
   rustBindgenExtraClangArgs = lib.concatStringsSep " " (
     (builtins.map (a: ''-I"${a}/include"'') [
       pkgs.glibc.dev
-    ]) ++ [
+    ])
+    ++ [
       ''-I"${pkgs.llvmPackages_latest.libclang.lib}/lib/clang/${pkgs.llvmPackages_latest.libclang.version}/include"''
       ''-I"${pkgs.glib.dev}/include/glib-2.0"''
       ''-I${pkgs.glib.out}/lib/glib-2.0/include/''
@@ -17,27 +18,35 @@ let
 
   layers = rec {
     common = {
-      extensions = (with vsc; [
-        github.copilot
-        github.copilot-chat
-        dracula-theme.theme-dracula
-        ms-vscode-remote.vscode-remote-extensionpack
-        dbaeumer.vscode-eslint
-        ms-vscode-remote.remote-containers
-        ms-vscode-remote.remote-ssh
-        github.vscode-github-actions
-        github.vscode-pull-request-github
-        eamodio.gitlens
-        streetsidesoftware.code-spell-checker
-        ms-ceintl.vscode-language-pack-ja
-      ]) ++ pkgs.vscode-utils.extensionsFromVscodeMarketplace [
-        {
-          name = "hadolint";
-          publisher = "exiasr";
-          version = "1.1.2";
-          hash = "sha256-6GO1f8SP4CE8yYl87/tm60FdGHqHsJA4c2B6UKVdpgM=";
-        }
-      ];
+      extensions =
+        (with vsc; [
+          github.copilot
+          github.copilot-chat
+          dracula-theme.theme-dracula
+          ms-vscode-remote.vscode-remote-extensionpack
+          dbaeumer.vscode-eslint
+          ms-vscode-remote.remote-containers
+          ms-vscode-remote.remote-ssh
+          github.vscode-github-actions
+          github.vscode-pull-request-github
+          eamodio.gitlens
+          streetsidesoftware.code-spell-checker
+          ms-ceintl.vscode-language-pack-ja
+        ])
+        ++ pkgs.vscode-utils.extensionsFromVscodeMarketplace [
+          {
+            name = "hadolint";
+            publisher = "exiasr";
+            version = "1.1.2";
+            hash = "sha256-6GO1f8SP4CE8yYl87/tm60FdGHqHsJA4c2B6UKVdpgM=";
+          }
+          {
+            name = "chatgpt";
+            publisher = "openai";
+            version = "0.4.71";
+            hash = "sha256-Q0le5rhVRgTDQXjIlhbzJOv/7+xC6JXwTp6fxZCP4ak=";
+          }
+        ];
       userSettings = {
         "workbench.colorTheme" = "Dracula";
         "window.autoDetectColorScheme" = false;
@@ -48,40 +57,46 @@ let
         "git.confirmSync" = false;
         "github.copilot.nextEditSuggestions.enabled" = true;
         "editor.suggestOnTriggerCharacters" = true;
-        "editor.quickSuggestions" = { other = true; comments = false; strings = true; };
+        "editor.quickSuggestions" = {
+          other = true;
+          comments = false;
+          strings = true;
+        };
         "git.autofetch" = true;
         "workbench.editor.enablePreview" = false;
       };
     };
 
     web = {
-      extensions = (with vsc; [
-        biomejs.biome
-        lokalise.i18n-ally
-        bradlc.vscode-tailwindcss
-        prisma.prisma
-        hashicorp.terraform
-        yoavbls.pretty-ts-errors
-      ]) ++ pkgs.vscode-utils.extensionsFromVscodeMarketplace [
-        {
-          name = "pnpm-catalog-lens";
-          publisher = "antfu";
-          version = "1.0.0";
-          hash = "sha256-mCMBVxZRIb3Jao1XSS7EQRQX3Y2vrkpAmy6ldSqZa9c=";
-        }
-        {
-          name = "explorer";
-          publisher = "vitest";
-          version = "1.32.1";
-          hash = "sha256-MAfjS/oFfFuiE+Q2w6leSlao436QSw2fKjd7/BE/Q8Y=";
-        }
-        {
-          name = "native-preview";
-          publisher = "typescriptteam";
-          version = "0.20251104.1";
-          hash = "sha256-lUSwtf7jncnrp6UXgmZU30e+CFRKqf0N41+Xna6daok=";
-        }
-      ];
+      extensions =
+        (with vsc; [
+          biomejs.biome
+          lokalise.i18n-ally
+          bradlc.vscode-tailwindcss
+          prisma.prisma
+          hashicorp.terraform
+          yoavbls.pretty-ts-errors
+        ])
+        ++ pkgs.vscode-utils.extensionsFromVscodeMarketplace [
+          {
+            name = "pnpm-catalog-lens";
+            publisher = "antfu";
+            version = "1.0.0";
+            hash = "sha256-mCMBVxZRIb3Jao1XSS7EQRQX3Y2vrkpAmy6ldSqZa9c=";
+          }
+          {
+            name = "explorer";
+            publisher = "vitest";
+            version = "1.32.1";
+            hash = "sha256-MAfjS/oFfFuiE+Q2w6leSlao436QSw2fKjd7/BE/Q8Y=";
+          }
+          {
+            name = "native-preview";
+            publisher = "typescriptteam";
+            version = "0.20251104.1";
+            hash = "sha256-lUSwtf7jncnrp6UXgmZU30e+CFRKqf0N41+Xna6daok=";
+          }
+        ];
       userSettings = {
         "editor.defaultFormatter" = "biomejs.biome";
         "[typescript].editor.defaultFormatter" = "biomejs.biome";
@@ -97,7 +112,7 @@ let
       userSettings = {
         "nix.enableLanguageServer" = true;
         "nix.serverPath" = "nil";
-        "[nix]"={
+        "[nix]" = {
           "editor.defaultFormatter" = "jnoortheen.nix-ide";
         };
       };
@@ -108,16 +123,19 @@ let
         ms-toolsai.jupyter
         ms-python.python
       ];
-      userSettings = {};
+      userSettings = { };
     };
 
     java = {
-      extensions = (with vsc; [
-        vscjava.vscode-java-pack
-        sonarsource.sonarlint-vscode
-        vscjava.vscode-java-debug
-        redhat.java
-      ]);
+      extensions = (
+        with vsc;
+        [
+          vscjava.vscode-java-pack
+          sonarsource.sonarlint-vscode
+          vscjava.vscode-java-debug
+          redhat.java
+        ]
+      );
 
       userSettings = {
         "java.jdt.ls.java.home" = "${pkgs.jdk25.home}";
@@ -185,28 +203,43 @@ let
         "rust-analyzer.lens.references.method.enable" = true;
         "rust-analyzer.lens.references.trait.enable" = true;
 
-        "files.watcherExclude" = { "**/target/**" = true; };
-        "search.exclude" = { "**/target/**" = true; };
+        "files.watcherExclude" = {
+          "**/target/**" = true;
+        };
+        "search.exclude" = {
+          "**/target/**" = true;
+        };
       };
     };
   };
 
-  combine = (ls:
-    builtins.foldl' (acc: l: {
-      extensions   = acc.extensions   ++ (l.extensions   or []);
-      userSettings = recursiveUpdate acc.userSettings (l.userSettings or {});
-    }) { extensions = []; userSettings = {}; } ls
+  combine = (
+    ls:
+    builtins.foldl'
+      (acc: l: {
+        extensions = acc.extensions ++ (l.extensions or [ ]);
+        userSettings = recursiveUpdate acc.userSettings (l.userSettings or { });
+      })
+      {
+        extensions = [ ];
+        userSettings = { };
+      }
+      ls
   );
 
   #    mkProfile [layers...] { extensions = [...]; userSettings = { ... }; }
-  mkProfile = layersList: extras:
-    let base = combine layersList;
-    in {
-      extensions   = base.extensions ++ (extras.extensions or []);
-      userSettings = recursiveUpdate base.userSettings (extras.userSettings or {});
+  mkProfile =
+    layersList: extras:
+    let
+      base = combine layersList;
+    in
+    {
+      extensions = base.extensions ++ (extras.extensions or [ ]);
+      userSettings = recursiveUpdate base.userSettings (extras.userSettings or { });
     };
 
-in {
+in
+{
   nixpkgs.config.allowUnfree = true;
 
   programs.vscode = {
@@ -228,8 +261,8 @@ in {
   };
 
   xdg.configFile."Code/User/locale.json".text = ''
-  {
-    "locale": "ja"
-  }
+    {
+      "locale": "ja"
+    }
   '';
 }