diff --git a/.env b/.env
deleted file mode 100644
index 8711951..0000000
--- a/.env
+++ /dev/null
@@ -1,2 +0,0 @@
-# Local default. start.sh will override if needed.
-USE_PREBUILD=/workspaces/model_converter_web/toolchain/prebuild
diff --git a/.gitignore b/.gitignore
index de0467e..a56dbad 100644
--- a/.gitignore
+++ b/.gitignore
@@ -80,4 +80,8 @@ CLAUDE.md.backup
 
 # Autoflow Agent（由 autoflow-agent init 自動產生）
 .claude/
-.autoflow/CLAUDE.md.backup.*
+.autoflow/
+
+# 兩個本地參考資料，不進 repo
+Model Converter with Task Queue.drawio.png
+tool chain manual.pdf