diff --git a/.gitignore b/.gitignore
index 9be0f01..a917236 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,10 +1,25 @@
-# Compiled JavaScript files
-lib/**/*.js
-lib/**/*.js.map
+# Dependencies
+node_modules/
+
+# Build output (tsc outDir = lib)
+lib/
 
 # TypeScript v1 declaration files
 typings/
 
-# Node.js dependency directory
-node_modules/
-*.local
\ No newline at end of file
+# Editor / OS noise
+.DS_Store
+.idea/.name
+
+# Tooling state (oh-my-claudecode 등 에이전트 작업 상태)
+.omc/
+.omx/
+
+# Scratch / 스크립트 산출물 (scripts/chat-tools-sheet.ts 등)
+tmp/
+
+# Local overrides / secrets
+*.local
+
+# 짹 말투 검수 로그/하니스 (로컬 전용 작업물)
+chat-review/