feat(toolbox): update toolbox configuration and scripts

- Update collab/TSYSDevStack-toolbox-prompt.md with latest guidelines
- Update output/PROMPT with improved instructions for AI collaboration
- Update output/toolbox-base/PROMPT with enhanced development guidelines
- Update output/toolbox-base/README.md with current documentation
- Update output/toolbox-base/build.sh with improved build process
- Update output/toolbox-base/docker-compose.yml with refined service definitions
- Update output/toolbox-base/run.sh with enhanced runtime configuration
- Add output/toolbox-base/release.sh for release management processes

These changes improve the developer workspace experience and ensure
consistent tooling across the TSYSDevStack project.

ToolboxStack/output/toolbox-base/run.sh

@@ -8,6 +8,7 @@ COMPOSE_FILE="${SCRIPT_DIR}/docker-compose.yml"
 export LOCAL_UID="${USER_ID_OVERRIDE:-$(id -u)}"
 export LOCAL_GID="${GROUP_ID_OVERRIDE:-$(id -g)}"
 export LOCAL_USERNAME="${USERNAME_OVERRIDE:-toolbox}"
+export TOOLBOX_IMAGE="${TOOLBOX_IMAGE_OVERRIDE:-tsysdevstack-toolboxstack-toolbox-base:release-current}"
 
 if [[ ! -f "${COMPOSE_FILE}" ]]; then
     echo "Error: docker-compose.yml not found at ${COMPOSE_FILE}" >&2