fix(devices): use real camera_id, disable auto live-mode, pin pygobject

Update the placeholder camera_id in allied_vision_test.yaml/bl_detectors.yaml
to the Aravis device ID discovered on the actual Alvium G1-507m hardware,
and set live_mode back to False (explicit, not deleted) so the camera stays
idle until start_live_mode() is called -- matching every real IDS camera
config, instead of auto-starting its live-mode polling thread as soon as
the device connects.

Pin pygobject<3.52 in pyproject.toml: 3.52+ requires girepository-2.0
(GLib >=2.80/gobject-introspection >=1.80), which this RHEL9 host's system
packages don't provide (only the older girepository-1.0 via
gobject-introspection 1.68) -- unpinned pip install fails at build time.
Document both the camera_id lookup and the pin in the README.

csaxs_bec/device_configs/allied_vision_test.yaml

@@ -37,8 +37,8 @@ allied_vision_cam:
   description: AlliedVision Alvium G1-507m camera for live image acquisition (native Aravis/GigE Vision, no EPICS IOC)
   deviceClass: csaxs_bec.devices.allied_vision_cameras.AlliedVisionAravisCamera
   deviceConfig:
-    camera_id: "Allied Vision Technologies-50-0536885929"   # Aravis device ID; resolved via discovery, independent of current IP
-    live_mode: True
+    camera_id: "Allied Vision-Alvium G1-507m-06J41"   # Aravis device ID; resolved via discovery, independent of current IP
+    live_mode: False
   onFailure: raise
   enabled: true
   readoutPriority: async

csaxs_bec/device_configs/bl_detectors.yaml

@@ -37,7 +37,7 @@ eiger_1_5:
 #   description: AlliedVision Alvium G1-507m camera for live image acquisition (native Aravis/GigE Vision, no EPICS IOC)
 #   deviceClass: csaxs_bec.devices.allied_vision_cameras.AlliedVisionAravisCamera
 #   deviceConfig:
-#     camera_id: "Allied Vision Technologies-50-0536885929"   # Aravis device ID; resolved via discovery, independent of current IP
+#     camera_id: "Allied Vision-Alvium G1-507m-06J41"   # Aravis device ID; resolved via discovery, independent of current IP
 #     live_mode: True
 #   onFailure: raise
 #   enabled: true

csaxs_bec/devices/allied_vision_cameras/README.md

@@ -29,8 +29,13 @@ needed).
   environment, same as the IDS camera tests run without `pyueye`.
 - **Talking to real hardware** — two things, both local to the machine running the device
   server (or wherever you instantiate `AlliedVisionAravisCamera`/`Camera` directly):
-  1. **PyGObject** (`pygobject`, the `gi` module) — already listed in `pyproject.toml`.
-     It's the GObject Introspection bridge, not Aravis itself.
+  1. **PyGObject** (`pygobject`, the `gi` module) — already listed in `pyproject.toml`,
+     pinned to `<3.52`. It's the GObject Introspection bridge, not Aravis itself. The pin
+     matters: PyGObject 3.52+ requires `girepository-2.0` (GLib >=2.80 /
+     gobject-introspection >=1.80), which RHEL9's system packages don't provide (only the
+     older `girepository-1.0` via `gobject-introspection` 1.68) — `pip install pygobject`
+     unpinned fails at build time with `Dependency 'girepository-2.0' is required but not
+     found`. Unpin once deployment hosts move to a newer GLib/gobject-introspection.
   2. **Aravis** — a native C library with a GObject Introspection typelib. It is *not* a
      pip package; it comes from the system package manager (or building from source), same
      class of local, non-pip dependency as the Vimba X SDK would have been, or the DLLs

pyproject.toml

@@ -22,7 +22,12 @@ dependencies = [
     "rich",
     "pyepics",
     "pyueye",                    # for the IDS uEye camera
-    "pygobject",                 # for the AlliedVision Alvium camera (native Aravis/GenICam, no EPICS IOC)
+    "pygobject<3.52",             # for the AlliedVision Alvium camera (native Aravis/GenICam, no EPICS IOC)
+                                  # pinned below 3.52: that version switched to requiring
+                                  # girepository-2.0 (GLib >=2.80/gobject-introspection >=1.80),
+                                  # which RHEL9's system packages don't provide (only the older
+                                  # girepository-1.0 via gobject-introspection 1.68) -- unpin once
+                                  # deployment hosts are upgraded past that.
     "bec_widgets",
     "zmq",
     "opencv-python",