feat: rename Monochromator panel to Beamline Setup, add WIP beam-to-box row

Display title only; class and file keep their names. New full-width
'Move Beam to Box (center) (WIP)' button under the Energy row, disabled
with a coming-soon tooltip until a DAQ endpoint exists.

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

src/aare/gui/panels/monochromator_panel.py

@@ -8,13 +8,20 @@ from aare.gui.widgets.title_label import TitleLabel
 class MonochromatorPanel(QWidget):
     mono_pitch_scan = Signal()
     change_energy = Signal(float)
+    move_beam_to_box = Signal()
 
     def __init__(self, parent=None):
         super().__init__(parent)
 
         grid_layout = QGridLayout(self)
         grid_layout.addWidget(
-            TitleLabel("Monochromator", self, collapsible=True, default_collapsed=False), 0, 0, 1, 3
+            TitleLabel(
+                "Beamline Setup", self, collapsible=True, default_collapsed=False
+            ),
+            0,
+            0,
+            1,
+            3,
         )
 
         self.mono_pitch_scan_button = QPushButton("Mono Pitch Rock and Go to Max", parent=self)
@@ -38,6 +45,16 @@ class MonochromatorPanel(QWidget):
         self.change_energy_button.clicked.connect(self._emit_change_energy)
         grid_layout.addWidget(self.change_energy_button, 2, 2)
 
+        # TODO(wire backend): no DAQ endpoint exists yet for moving the beam
+        # to the box center — shown disabled as WIP until the operation is
+        # defined server-side; then drop "(WIP)", enable, and connect the
+        # signal in main_window.
+        self.move_beam_to_box_button = QPushButton("Move Beam to Box (center) (WIP)", parent=self)
+        self.move_beam_to_box_button.setToolTip("Coming soon — not functional yet.")
+        self.move_beam_to_box_button.setEnabled(False)
+        self.move_beam_to_box_button.clicked.connect(self.move_beam_to_box.emit)
+        grid_layout.addWidget(self.move_beam_to_box_button, 3, 0, 1, 3)
+
     @Slot()
     def _emit_change_energy(self):
         self.change_energy.emit(float(self.energy_spin.value()) * 1000.0)