(CAT-2609) Match git commit at command boundaries not just start of string

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: david22swan

.claude/hooks/no-main-commits.sh

@@ -4,7 +4,7 @@
 
 . "$(dirname "$0")/_parse_input.sh"
 
-if echo "$cmd" | grep -qE '^git commit'; then
+if echo "$cmd" | grep -qE '(^|[;&|])\s*git commit'; then
   branch=$(git rev-parse --abbrev-ref HEAD 2>/dev/null)
   if [ "$branch" = "main" ] || [ "$branch" = "master" ]; then
     echo "{\"continue\":false,\"stopReason\":\"Project rule: never work directly on the $branch branch.\"}"