diff --git a/mindcli/health.py b/mindcli/health.py
index 679fbde..ce35aaa 100644
--- a/mindcli/health.py
+++ b/mindcli/health.py
@@ -261,10 +261,18 @@ class _ThreadedHTTPServer(ThreadingMixIn, HTTPServer):
 
 
 def _get_vendor_commit() -> str:
+    """读取 _vendor/VENDOR_COMMIT 文件，提取 commit hash。
+
+    VENDOR_COMMIT 是多行标记文件（# 注释 + source:/commit:/date:），
+    只返回 commit: 行的值，不是整个文件内容。
+    """
     commit_file = os.path.join(mindcli._VENDOR_DIR, "VENDOR_COMMIT")
     try:
         with open(commit_file) as f:
-            return f.read().strip()
+            for line in f:
+                if line.startswith("commit:"):
+                    return line.split(":", 1)[1].strip()
+            return "unknown"
     except FileNotFoundError:
         return "unknown"