fix(omny): laser tracker on with mirror 7 (FZP X) instead of 6 (OSA X, unused since the interferometer rework); RotX mirror keeps the RotZ settings (Mirko)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01M8zoDvEVcT4jbFjSNU9Rii

csaxs_bec/bec_ipython_client/plugins/omny/omny_rt.py

@@ -154,7 +154,7 @@ class OMNY_rt_client:
                         print(
                             f"\nSelected mirror channel {self.mirror_channel}: {opt_mirrorname}. Autostop {autostop}. Signal averaging time: {averaging_time}\r"
                         )
-                        if int(key) == 6:
+                        if int(key) == 7:  # FZP X (ST FZP X); was 6 = OSA X before the interferometer rework (Mirko 2026-11-05)
                             dev.rtx.controller.laser_tracker_on()
                         dev.rtx.controller._omny_interferometer_switch_channel(self.mirror_channel)
                         max = 0

csaxs_bec/devices/omny/rt/rt_omny_ophyd.py

@@ -111,7 +111,7 @@ class RtOMNYController(Controller):
         self.switchbox_socket = socket.socket()
         # Interferometer rework 2026-11-05 (Mirko): signals ssi_1 ST FZP Y, ssi_2 ST FZP X, ssi_3 RotZ, ssi_4 RotX,
         # ssi_5 not read. Mirror (switchbox) channels: 1 Inc Angle (RotZ, ssi_3), 2 Inc ST FZP Y (was Inc ST OSA Y,
-        # ssi_1), 3 Inc RotX (new angle interferometer, ssi_4; thresholds provisional from channel 1), 4 unused (was
+        # ssi_1), 3 Inc RotX (new angle interferometer, ssi_4; same settings as channel 1 RotZ until its signals are known), 4 unused (was
         # OSA Y), 5 FZP Y (ssi_1), 6 unused (was OSA X), 7 FZP X (ssi_2), 8 unused (was OSA Y on the OSA FZP signal).
         self.mirror_parameters = {
             1: {