Scene Manager: LOD switching; Shot Viewer renamed Shot Manager

LODs are child collections of the asset collection (COL_{asset}_LOD{n}).
Overrides hide the other LOD collections (viewport and render), keeping
the rig, pose and animation; collection instances instance the LOD
collection. Each instance has its own LOD, set per instance or for the
selection in the Loaded panel, kept through save, reload and updates.
Loading shows SCENE_MANAGER_DEFAULT_LOD (0).

The Shot Viewer panel is now "Shot Manager" and starts closed. Code
names and SHOT_VIEWER_* config keys are unchanged.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

ui/panel.py

@@ -278,7 +278,8 @@ class WTD_UL_shots(bpy.types.UIList):
 class _ShotViewerPanel:
     bl_region_type = "UI"
     bl_category = "WTD"
-    bl_label = "Shot Viewer"
+    bl_label = "Shot Manager"
+    bl_options = {"DEFAULT_CLOSED"}  # panel starts collapsed
 
     def draw(self, context) -> None:
         layout = self.layout
@@ -482,11 +483,32 @@ class _SceneLoadedPanel:
                 op = sub.operator(sm.WTD_OT_scene_select_instance.bl_idname, text="", icon="RESTRICT_SELECT_OFF")
                 op.library, op.instance = library.name, instance.name
                 sub.operator(sm.WTD_OT_scene_remove.bl_idname, text="", icon="X").instance = instance.name
+                lods = sm_library.lods(library, instance)
+                if lods:
+                    current = sm_library.current_lod(library, instance)
+                    sub = col.row(align=True)
+                    sub.label(text="LOD", icon="BLANK1")
+                    for number in lods:
+                        op = sub.operator(sm.WTD_OT_scene_set_lod.bl_idname, text=str(number), depress=number == current)
+                        op.lod, op.library, op.instance = number, library.name, instance.name
 
         layout.separator()
         row = layout.row(align=True)
         row.operator(sm.WTD_OT_scene_update.bl_idname, text="Update Selected").selected = True
         row.operator(sm.WTD_OT_scene_remove.bl_idname, text="Remove Selected").selected = True
+        selected = [
+            (library, instance)
+            for library, instance in sm_library.selected_instances(context.view_layer)
+            if sm_library.lods(library, instance)
+        ]
+        if selected:
+            split = layout.split(factor=0.4, align=True)
+            split.label(text="Selected LOD")
+            row = split.row(align=True)
+            shown = {sm_library.current_lod(library, instance) for library, instance in selected}
+            for number in sorted({n for library, instance in selected for n in sm_library.lods(library, instance)}):
+                op = row.operator(sm.WTD_OT_scene_set_lod.bl_idname, text=str(number), depress=shown == {number})
+                op.lod, op.selected = number, True
 
 
 class _SceneAssetizePanel: