CLI prompt nodes now accept a raw cliCommand (any command + args), not just
named scripts. A raw command must be explicitly approved by the user before it
runs: an unapproved command pauses the task (status awaiting-cli-approval) with
the command shown; the user approves via POST /tasks/:id/workflow/approve-cli,
which records the exact command string in settings.approvedWorkflowCliCommands
and resumes. Named scripts (settings.scripts) still never require approval.
Adds POST /tasks/:id/workflow/input to answer await-input nodes (records a
steering comment + resumes).
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