diff --git a/.gitignore b/.gitignore
index 580c14c..196445f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -30,3 +30,6 @@ packages/
 .claude/
 
 .local/
+
+# LiteDB local config cache (Phase 6.1 Stream D — runtime artifact, not source)
+src/ZB.MOM.WW.OtOpcUa.Server/config_cache.db
diff --git a/src/ZB.MOM.WW.OtOpcUa.Server/config_cache.db b/src/ZB.MOM.WW.OtOpcUa.Server/config_cache.db
deleted file mode 100644
index ee9bad0..0000000
Binary files a/src/ZB.MOM.WW.OtOpcUa.Server/config_cache.db and /dev/null differ