add tests, 05 is broken

tests/03_create_group.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+# Create a group as user1
+source "$(dirname "$0")/config.sh"
+
+TOKEN1=$(load_state "TOKEN1")
+if [[ -z "$TOKEN1" ]]; then
+    echo "ERROR: No token found. Run 02_login.sh first."
+    exit 1
+fi
+
+echo "=== Creating group: $GROUP_NAME ==="
+# Pipe curl directly to od to avoid null bytes being lost in bash variables
+GROUP_ID=$(curl -s -X POST "$BASE_URL/new/group" \
+    -d "token=$TOKEN1" \
+    -d "name=$GROUP_NAME" \
+    -d "color=$GROUP_COLOR" \
+    | od -An -tu4 -N4 --endian=big | tr -d ' ')
+echo "Group ID: $GROUP_ID"
+save_state "GROUP_ID" "$GROUP_ID"