- Wire provisioner.progress into assignment sheet UI (was showing static
"Provisioning beacon..." instead of live updates like "Connecting...",
"Authenticating...", "Writing config 1/24...")
- Increase disconnect retries from 2 to 3 with longer backoff (3s/4s/5s)
- Cancel write timeout timer on disconnect to prevent double-failure
- Bump global timeout from 30s to 45s for extra retry headroom
- Improve error message with actionable guidance ("move closer and retry")