hwp-supervisor: Add option to disable shutdown

[ykyohei]

Description

Added a option to disable shutdown on startup
Added a task to disable and re-enable shutdown non-temporarily.

Motivation and Context

Having these option is helpful for hwp expert to operate in irregular state.
For example, sometimes lakeshore or ups could have communication issue and we cannot monitor YBCO temperature or ups state, but hwp could be safe to operate.

How Has This Been Tested?

Tested at satp3 on June 9th 2026.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[mhasself]

Definitely a useful thing. Can you please add (if not already in there):

• the "shutdown_enabled" value should appear in session.data.
• the update_shutdown task logs what value the user passed in (I don't think we'll see it in the logs, otherwise).

Also, is there a feed where this can be published? I vaguely remember that HWPSupervisor doesn't record much about the decisions it's making; consider starting this.

[ykyohei]

@mhasself Thanks for the suggestions, updated as suggested and tested in daq-dev.
We recently updated hwp_supervisor to publish shutdown state so I also added "shutdown_enabled" as a new feed to publish.
Made similar updates to another PR of hwp-gripper as well #1075

[mhasself]

Looks good to me -- one last minor thing:

If a user calls "update_shutdown" to set enable=false, that will not abort an active shutdown, right? User needs to also call cancel_shutdown. That fact should be added to the Task docstring.

Sorry for the delay in getting back to this.

[ykyohei]

@BrianJKoopman I'm not sure why the build is keep failing, it looks like it is related to latest pysmurf update? Could you take a look?

[BrianJKoopman]

@BrianJKoopman I'm not sure why the build is keep failing, it looks like it is related to latest pysmurf update? Could you take a look?

Thanks for the ping. This should fix things: #1081 -- I expect to merge that when the build is complete in ~10 minutes. Then if you merge in the latest from main you should be good.