Re-do still hate it

resources/translations/en_US.json

@@ -188,34 +188,24 @@
     "Tools.shapekey_tolerance_desc": "Minimum difference to consider a shape key as used",
     "Tools.shapekeys_removed": "Removed {count} unused shape keys",
 
-    "MMDTools.label": "MMD Tools",
-    "MMDTools.basic_tools": "Basic MMD Tools",
-    "MMDTools.advanced_tools": "Advanced Tools",
-    "MMDTools.settings": "MMD Settings",
-    "MMDTools.cleanup": "Cleanup Tools",
-    "MMDTools.fix_bone_names": "Fix Bone Names",
-    "MMDTools.fix_bone_names_desc": "Standardize and fix bone names",
-    "MMDTools.fix_hierarchy": "Fix Bone Hierarchy",
-    "MMDTools.fix_hierarchy_desc": "Fix bone parenting and hierarchy",
-    "MMDTools.fix_weights": "Fix Bone Weights",
-    "MMDTools.fix_weights_desc": "Clean up and normalize bone weights",
-    "MMDTools.fix_mmd_features": "Fix MMD Features",
-    "MMDTools.fix_mmd_features_desc": "Fix MMD-specific features and settings",
-    "MMDTools.advanced_bone_ops": "Advanced Bone Operations",
-    "MMDTools.advanced_bone_ops_desc": "Perform advanced bone fixes and cleanup",
-    "MMDTools.keep_upper_chest": "Keep Upper Chest",
-    "MMDTools.keep_upper_chest_desc": "Keep the upper chest bone during cleanup",
-    "MMDTools.remove_unused": "Remove Unused Bones",
-    "MMDTools.remove_unused_desc": "Remove bones with no weights or influence",
-    "MMDTools.merge_distance": "Merge Distance",
-    "MMDTools.merge_distance_desc": "Distance threshold for merging vertices",
-    "MMDTools.cleanup_shapekeys": "Clean Shape Keys",
-    "MMDTools.cleanup_shapekeys_desc": "Remove unused and duplicate shape keys",
-    "MMDTools.bones_renamed": "Bone names standardized successfully",
-    "MMDTools.hierarchy_fixed": "Bone hierarchy fixed successfully",
-    "MMDTools.weights_fixed": "Bone weights cleaned and normalized",
-    "MMDTools.no_meshes": "No meshes found to process",
-    "MMDTools.not_mmd_model": "Selected armature is not an MMD model",
+    "MMD.label": "MMD Tools",
+    "MMD.bone_standardization": "Bone Standardization",
+    "MMD.weight_processing": "Weight Processing",
+    "MMD.hierarchy": "Bone Hierarchy",
+    "MMD.cleanup": "Cleanup",
+    "MMD.no_armature": "No armature selected",
+    "MMD.no_meshes": "No meshes found",
+    "MMD.validation.rigify_unsupported": "Rigify armatures are not supported",
+    "MMD.validation.multi_user_mesh": "Multi-user mesh detected: {mesh}",
+    "MMD.bones_standardized": "Bones standardized successfully",
+    "MMD.weights_processed": "Weights processed successfully",
+    "MMD.hierarchy_fixed": "Bone hierarchy fixed successfully",
+    "MMD.hierarchy_validation_warning": "Some hierarchy relationships could not be validated",
+    "MMD.cleanup_completed": "Armature cleanup completed",
+    "MMD.process_twist_bones": "Process Twist Bones",
+    "MMD.process_twist_bones_desc": "Transfer weights from twist bones to their parent bones",
+    "MMD.connect_bones": "Connect Bones",
+    "MMD.connect_bones_desc": "Connect bones in chain where appropriate",
 
     "Settings.label": "Settings",
     "Settings.language": "Language",