chore: Refactor pre-commit hook to improve performance and readability

hooks/pre-commit

@@ -4,5 +4,18 @@ if sh -c ": >/dev/tty" >/dev/null 2>/dev/null; then
     exec < /dev/tty
 fi
 
+# Get list of stashed PHP files
+stashed_files=$(git diff --cached --name-only --diff-filter=ACM -- '*.php')
+
+# If there are no stashed PHP files, exit early
+if [ -z "$stashed_files" ]; then
+    exit 0
+fi
+
+# Set files variable to only include stashed PHP files
+files="$stashed_files"
+
 $(pwd)/vendor/bin/pint $files -q
-git add .
+if [ $? -eq 0 ]; then
+    git add $files
+fi