feat(ui): dock the tool palette to the right edge with v1 card styling

PyReconstruct/modules/gui/main/field_widget_7_view.py

@@ -196,6 +196,11 @@ def setLeftHanded(self, left_handed=None):
             self.mouse_mode == CLOSEDTRACE):
             cursor = self.pencil_l if self.series.getOption("left_handed") else self.pencil_r
             if cursor != self.cursor(): self.setCursor(cursor)
+
+        # flip the floating tool palette to the matching field edge
+        palette = getattr(self.mainwindow, "mouse_palette", None)
+        if palette is not None:
+            palette.applyHandedness()
 
     def endPendingEvents(self):
         """End ongoing events that are connected to the mouse."""

PyReconstruct/modules/gui/palette/buttons.py

@@ -92,6 +92,27 @@ class ModeButton(MoveableButton):
 
     def __init__(self, parent, manager):
         super().__init__(parent, manager, "mode")
+        self.mode_name = None   # display name, set by MousePalette.createModeButton
+        self.keycap = None      # the small shortcut-hint label (or None)
+        self._hovered = False
+
+    def mouseMoveEvent(self, event):
+        """Docked in the tool-palette card — not individually draggable (the
+        card is edge-docked and flips with the left-handed option), so the
+        MoveableButton drag is intentionally suppressed. Clicks/right-clicks
+        still work via press/release."""
+        pass
+
+    def enterEvent(self, event):
+        """Brighten the resting icon on hover (prototype's ``.tool:hover``)."""
+        self._hovered = True
+        self.manager.styleModeButton(self)
+        super().enterEvent(event)
+
+    def leaveEvent(self, event):
+        self._hovered = False
+        self.manager.styleModeButton(self)
+        super().leaveEvent(event)
 
     def highlightButton(self):
         """Mode buttons show their active state via the accent fill applied by