fix(hooks): improve AI attribution detection in pre-push hook

Author: jdalton

.git-hooks/pre-push

@@ -44,7 +44,7 @@ while read local_ref local_sha remote_ref remote_sha; do
   while IFS= read -r commit_sha; do
     full_msg=$(git log -1 --format='%B' "$commit_sha")
 
-    if echo "$full_msg" | grep -qiE "(Generated with|Co-Authored-By: Claude|Co-Authored-By: AI|🤖 Generated|AI generated|Claude Code|@anthropic|Assistant:|Generated by Claude|Machine generated)"; then
+    if echo "$full_msg" | grep -qiE "(Generated with.*(Claude|AI)|Co-Authored-By: Claude|Co-Authored-By: AI|🤖 Generated|AI generated|@anthropic\.com|Assistant:|Generated by Claude|Machine generated)"; then
       if [ $ERRORS -eq 0 ]; then
         printf "${RED}✗ BLOCKED: AI attribution found in commit messages!${NC}\n"
         printf "Commits with AI attribution:\n"