[imonlinux]

…failures

Two related issues on workstation installs:

• At login the tray can start before the network is up; the synchronous connect failed (Errno 101) with no retry, leaving the tray MQTT-dead for the whole session (mute mirroring and state colors silent). Use connect_async + loop_start with reconnect backoff (1-30s) so the connection establishes whenever the network comes up.
• The service start/stop/restart actions ran systemctl with check=False and no output capture, so failed starts left no trace in the journal. Route them through a helper that logs the return code and stderr.

What does this implement/fix?

Related issue (if applicable):

• Fixes #

Types of changes

• Bugfix (non-breaking change which fixes an issue) — bugfix
• New feature (non-breaking change which adds functionality) — new-feature
• Enhancement to an existing feature — enhancement
• Breaking change (fix or feature that would cause existing functionality to not work as expected) — breaking-change
• Refactor (no behaviour change) — refactor
• Documentation only — documentation
• Maintenance / chore — maintenance
• CI / workflow change — ci
• Dependencies bump — dependencies

Checklist

• The code change is tested and works locally.
• ./script/lint passes.
• ./script/tests passes, and tests have been added/updated under tests/ where applicable.