diff --git a/.gitignore b/.gitignore
index 32b1689..25eecc0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -107,4 +107,19 @@ ai-labeling/example/~$*
 ai-labeling/example/program_docs/
 
 # 临时提示词文件
-CLAUDE生成prompt.md
\ No newline at end of file
+CLAUDE生成prompt.md
+
+# 大文件全局禁入(视频/设计源文件/数据库dump)
+*.mp4
+*.mov
+*.avi
+*.mkv
+*.psd
+*.dump
+footage/
+
+# git 备份目录(filter-repo 清理前的备份)
+.git-backup-before-cleanup/
+
+# 迁移文档(含敏感信息,不入库)
+migrate-local-gitea-to-cloud.md
\ No newline at end of file