claudetool: draw attention to commit message capitalization and punctuation
diff --git a/claudetool/pre-commit.go b/claudetool/pre-commit.go
index f8fe5a0..a335e27 100644
--- a/claudetool/pre-commit.go
+++ b/claudetool/pre-commit.go
@@ -64,6 +64,7 @@
 - Structure and organization
 - Length and detail
 - Special notations or tags
+- Capitalization and punctuation
 
 First, provide a concise analysis of the predominant patterns.
 Then select up to 3 commit hashes that best exemplify the repository's commit style.