Refactor XPS–LSE data flow

[xiaoyachong]

Although the current lse_operator provides a temporary solution for TRS beamtime—by implementing a WebSocket listener that consumes messages produced by the XPS code—we agreed that a better long-term approach is as follows:

Proposed architecture:

• In XPS: publish frames to Tiled.
• In LSE: read frames from Tiled as they arrive.

To achieve this, three changes are needed:

• In this repository (ArroyoXPS):

  • Add a Tiled publisher to save shot_mean.
  • Include the tiled_url in the WebSocket message.

• In arroyosas:

  • Add the websocket listner in arroyosas (refer to the existing Tiled WebSocket listener) instead of creating one in lse_operator.

• In the LSE repository:

  • Reuse only the existing arroyo service.
  • Remove the newly added arroyo_xps service.