diff --git a/.claude/launch.json b/.claude/launch.json
deleted file mode 100644
index 04ffa28b..00000000
--- a/.claude/launch.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "version": "0.0.1",
-  "configurations": [
-    {
-      "name": "dev",
-      "runtimeExecutable": "npm",
-      "runtimeArgs": ["run", "dev"],
-      "port": 3000
-    }
-  ]
-}
diff --git a/.codex-dev/next-dev-20260517-110623.err.log b/.codex-dev/next-dev-20260517-110623.err.log
deleted file mode 100644
index e69de29b..00000000
diff --git a/.codex-dev/next-dev-20260517-110623.out.log b/.codex-dev/next-dev-20260517-110623.out.log
deleted file mode 100644
index e69de29b..00000000
diff --git a/.codex-dev/next-dev-20260517-110727.err.log b/.codex-dev/next-dev-20260517-110727.err.log
deleted file mode 100644
index e69de29b..00000000
diff --git a/.codex-dev/next-dev-20260517-110727.out.log b/.codex-dev/next-dev-20260517-110727.out.log
deleted file mode 100644
index e69de29b..00000000
diff --git a/.codex-dev/next-dev-20260517-110752.err.log b/.codex-dev/next-dev-20260517-110752.err.log
deleted file mode 100644
index e69de29b..00000000
diff --git a/.codex-dev/next-dev-20260517-110752.out.log b/.codex-dev/next-dev-20260517-110752.out.log
deleted file mode 100644
index e69de29b..00000000
diff --git a/.codex-dev/next-dev-20260517-110854.err.log b/.codex-dev/next-dev-20260517-110854.err.log
deleted file mode 100644
index e69de29b..00000000
diff --git a/.codex-dev/next-dev-20260517-110854.out.log b/.codex-dev/next-dev-20260517-110854.out.log
deleted file mode 100644
index e69de29b..00000000
diff --git a/.codex-dev/next-dev-20260517-110941.err.log b/.codex-dev/next-dev-20260517-110941.err.log
deleted file mode 100644
index e69de29b..00000000
diff --git a/.codex-dev/next-dev-20260517-110941.out.log b/.codex-dev/next-dev-20260517-110941.out.log
deleted file mode 100644
index 6b81ded1..00000000
--- a/.codex-dev/next-dev-20260517-110941.out.log
+++ /dev/null
@@ -1,13 +0,0 @@
-▲ Next.js 16.1.6 (Turbopack)
-- Local:         http://localhost:3001
-- Network:       http://192.168.1.2:3001
-- Environments: .env.development.local, .env
-- Experiments (use with caution):
-  ✓ turbopackUseSystemTlsCerts
-
-✓ Starting...
-✓ Ready in 1145ms
-○ Compiling / ...
- GET / 200 in 18.4s (compile: 17.4s, render: 974ms)
- GET /login/ 200 in 1979ms (compile: 1963ms, render: 17ms)
-[?25h
diff --git a/.gitignore b/.gitignore
index 989ad411..d0ebde20 100644
--- a/.gitignore
+++ b/.gitignore
@@ -63,6 +63,7 @@ NUL
 .cursor/
 .playwright-mcp/
 .superpowers/
+.codex-dev/
 
 # Remotion (別管理)
 remotion/
diff --git a/package.json b/package.json
index 095337c7..bc73e704 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,11 @@
   },
   "lint-staged": {
     "*.{ts,tsx,js,jsx,mjs}": [
-      "eslint --fix"
+      "eslint --fix",
+      "prettier --write"
+    ],
+    "*.{cjs,json,css,yml,yaml}": [
+      "prettier --write"
     ]
   },
   "devDependencies": {