diff --git a/.gitignore b/.gitignore
index f3eedcc..93a0549 100644
--- a/.gitignore
+++ b/.gitignore
@@ -44,3 +44,5 @@ kicad/out/
 kicad/datasheets/
 # 切片器吐在根目录的结果
 /result.json
+# KiCad 自己的本地历史（内嵌 git 仓库）
+kicad/*/.history/
diff --git a/kicad/PhoneRail-Board1/.history b/kicad/PhoneRail-Board1/.history
deleted file mode 160000
index 034fdc7..0000000
--- a/kicad/PhoneRail-Board1/.history
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 034fdc79e114ed181455dd021c731113dcaee5df