Integrate UI scan number tracking via numtracker or Tiled endpoints. #386

Part of #373 Queue Management & Experiment Control:

Fetch the active scan number and propagate it automatically to workflow pipeline fields, eliminating manual entry.

Goals

Acceptance criteria : What journeys should the user be able to complete to consider your feature done
Be as specific as you can, check them off once they work. Add more if you find more requirements during development. Issue should only be considered done after all of them are checked

• Auto-Populated of scan number and visit: The current scan number and visit displays automatically and populates downstream reconstruction triggers.

Tasks

base on the goals, deduce the tasks required. check them off once they're done

• Numtracker Evaluation: Query the Numtracker endpoint to fetch active scan indices. ( This is also available from Blueapi once a task is summited)
• UI Field Auto-fill Hook: Bind the retrieved scan number directly to Nathanael's processing pipeline input form ??