Harmonize CLI for support operators (don wrapper for NS8 support session)

[DavidePrincipi]

Current support session management in NS8 does not provide a CLI experience consistent with legacy NS7 operator habits (the don command). Harmonizing the CLI will lower operator friction and errors during support tasks.

Proposed solution

Implement a CLI wrapper (don) for support session operations reflecting the traditional ns7 command interface:

• don start -> systemctl start support
• don stop -> systemctl stop support
• don status -> systemctl status support
• don extend -> systemctl stop support-expire.timer

With --node, the wrapper operates on a worker node but only when executed from the leader node:

• don start --node 2 -> api-cli run node/2/start-support-session
• don stop --node 2 -> api-cli run node/2/stop-support-session
• don status --node 2 -> api-cli run node/2/get-support-session
• don extend --node 2 -> not supported. You must reach node 2 first, then run "don extend" there.

Alternative solutions
Continue to rely on direct systemctl and api-cli commands as currently implemented. This preserves flexibility, but lacks operator convenience.

Additional context

The don command on ns7: https://github.com/nethesis/windmill/blob/master/don/don

See also

• Discussion https://mattermost.nethesis.it/nethesis/pl/q8ydjfnyff863838jy7jbyiz1a

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Thanks to @gsanchietti