Implement Linear Arbitrary (LA) Polarisation Control

[Relm-Arrowny]

Goals

Acceptance criteria : What journeys should the user be able to complete to consider your feature done

• [Bluesky Device: A user can run yield from bps.abs_set(polarization,Pol.LA, angle=) and the hardware responds correctly.
• Coordinated Motion: All four rows move to their calculated phase positions based on the requested angle $\alpha$ without violating hardware limits.
• Energy-Angle Compensation: The undulator automatically tracks and adjusts to maintain constant photon energy as the polarization angle changes.
• Plan: Users can successfully run a bp.scan or bp.list_scan over the polarization angle motor.
• Beamline Deployment: Feature is fully implemented and tested for i06, i17, and i21.
• Requirements check: Confirm with beamline scientists if i05, k07, and i09 require LA mode and document their specific row-phasing geometry.

Task

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

• Review I10 Implementation: Analyze the existing i10_apple2.py logic; determine how to abstract the "movable jaw phase" logic vs. the standard fixed-jaw APPLE II movement used elsewhere.
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Related Resources

I10 implementation : I10 appears to be one of the special beamline where it has a movable jaw phase. other beamline may not function the same way.
I06 has a massive lookup that in epic, it may worth moving it away from it.

[Relm-Arrowny]

Not required for i05, k07, and i09.