ForgeFlow 0.5.4

This release repairs the first real SSH / Unraid deployment path.

Preflight now verifies Unraid → Gitea access with the exact configured clone URL before deployment can start.
SSH deployments run as a background deployment operation; the interface returns immediately and polls the real operation state.
Failed SSH or Docker operations are written back as terminal failed operations instead of leaving the UI indefinitely active.
Compose service and container casing are preserved, so the requested name Portfolio remains Portfolio.
Generated Compose no longer forces service names to lowercase.
Deployment status refreshes automatically until success or failure.