Feature request: support one-time (run-once) scheduled tasks

[tcp404]

Wishing for a small feature 🙏

Background / Pain point

Right now AionUi's scheduled tasks can only be configured to run on a recurring/repeating schedule. There's no way to set up a task that runs only once at a specific point in time. Many scenarios really only need a single run, so using a recurring task as a workaround is inconvenient — and you have to remember to turn it off afterward.

Desired feature

It would be great if scheduled tasks supported one-time (run-once) tasks:

• Pick a specific date + time
• It runs once automatically when that time arrives
• After running, it ends automatically (no further triggers) and is marked as "Completed"

Example use cases

• Have an agent run a specific task / generate a report once at 9:00 AM tomorrow
• Do a one-off cleanup next Monday and then stop
• A reminder or batch job that only needs to fire once

Nice-to-haves (optional)

• After a one-time task runs, view its result in history for later reference
• Put it alongside existing recurring tasks in the same UI — just toggle between "Repeat / Once"

[github-actions[bot]]

Thanks for posting! @IceyLiu will take a look soon. / 感谢发帖！@IceyLiu 会尽快跟进。