DeploymentExecutor already persists errorMessage on FAILED transitions
but the UI never rendered it — users saw "FAILED" with no explanation.
Add a bordered error block above the action row when a deployment is
FAILED, preserving whitespace and wrapping long Docker error bodies
(e.g. 409 conflict JSON).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Status badge, replica count, URL, JAR/checksum grid, and stop/start
actions for the latest deployment. CSS added to AppDeploymentPage.module.css.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>