fix: no BEAMLINE BUSY overlay during Sample alignment

Same exception as the motion watch: busy in Sample alignment is the
alignment itself, and the sample motion is watched in these very
views - the curtain hid exactly what the user needed to see. Gated
at both style call sites (sample camera and the Axis views); the
session-driven 'In viewing mode' badge is unaffected.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/aare/gui/main_window.py

@@ -2734,8 +2734,10 @@ class MainWindow(QMainWindow):
         if hasattr(self, "gonio_camera_thread") and self.gonio_camera_thread is not None:
             self.gonio_camera_thread.set_busy(s.busy)
 
+        # Sample alignment busy is the alignment itself (same exception as
+        # the motion watch below) — no BEAMLINE BUSY curtain on any view.
         busy_style = build_busy_overlay_style(
-            is_busy=bool(s.busy),
+            is_busy=bool(s.busy) and s.state != BeamlineStateEnum.SampleAlignment,
             tell_state=s.tell_state,
             session_state=getattr(getattr(s, "session", None), "session", None),
         )

src/aare/gui/widgets/camera_image.py

@@ -804,8 +804,14 @@ class SampleCameraImageLabel(QGraphicsView):
             self._session_state = new_session_state
             self.update()
 
+        # Same exception as the main window's motion watch: busy during
+        # Sample alignment IS the alignment, and the sample motion is watched
+        # right here — no BEAMLINE BUSY curtain over it. The "In viewing
+        # mode" badge is session-driven and unaffected by the gate.
         new_busy_style = build_busy_overlay_style(
-            is_busy=bool(s.busy), tell_state=s.tell_state, session_state=self._session_state
+            is_busy=bool(s.busy) and s.state != BeamlineStateEnum.SampleAlignment,
+            tell_state=s.tell_state,
+            session_state=self._session_state,
         )
         if new_busy_style != self._busy_overlay_style:
             self._busy_overlay_style = new_busy_style

tests/unit/gui/test_camera_image.py

@@ -31,7 +31,12 @@ def _geom() -> SampleGeometryModel:
     )
 
 
-def _status(*, busy: bool, session: SessionsStateEnum) -> DAQStatusModel:
+def _status(
+    *,
+    busy: bool,
+    session: SessionsStateEnum,
+    state: BeamlineStateEnum = BeamlineStateEnum.SampleAlignment,
+) -> DAQStatusModel:
     return DAQStatusModel(
         geom=_geom(),
         diffraction=DiffractionGeometry(
@@ -61,7 +66,7 @@ def _status(*, busy: bool, session: SessionsStateEnum) -> DAQStatusModel:
             dtz_min=120.0,
             dtz_max=1600.0,
         ),
-        state=BeamlineStateEnum.SampleAlignment,
+        state=state,
         busy=busy,
         session=SessionStatus(session=session, current_pgroup="p123", staff=True),
         crystal_size=CrystalSize(x=0, y=0, z=0),
@@ -122,13 +127,30 @@ def test_camera_error_message_rewords_and_draws(camera):
 
 
 def test_busy_warning_is_not_a_click_target(camera):
-    camera.update_daq_status(_status(busy=True, session=SessionsStateEnum.OwnedByYou))
+    camera.update_daq_status(
+        _status(
+            busy=True,
+            session=SessionsStateEnum.OwnedByYou,
+            state=BeamlineStateEnum.DataCollection,
+        )
+    )
     style = camera._busy_overlay_style
     assert style is not None
     assert style.text == "BEAMLINE BUSY"
     camera.grab()
     assert camera._session_badge_rect is None
 
+    # Sample alignment is the exception: its busy moves ARE the alignment,
+    # watched in this very view — no BEAMLINE BUSY curtain over it.
+    camera.update_daq_status(
+        _status(
+            busy=True,
+            session=SessionsStateEnum.OwnedByYou,
+            state=BeamlineStateEnum.SampleAlignment,
+        )
+    )
+    assert camera._busy_overlay_style is None
+
 
 def test_vacant_badge_hover_click_and_theme(camera, qtbot):
     camera.update_daq_status(_status(busy=False, session=SessionsStateEnum.Vacant))