added stub simulation entry and logs

BEdit/AGENTS.md

@@ -24,7 +24,8 @@ src/bedit/
 │   ├── model.py            # Document, component, graph, port, icon data
 │   ├── port_types.py       # Port type definitions and compatibility
 │   ├── serializer.py       # JSON persistence
-│   └── libraries.py        # Library file discovery and parsing
+│   ├── libraries.py        # Library file discovery and parsing
+│   └── simulation/         # Qt-free simulation service and compiler/runtime code
 └── gui/                    # All Qt-dependent code
     ├── app.py              # QApplication startup and palette
     ├── main_window.py      # Top-level UI orchestration
@@ -91,6 +92,9 @@ Keep the root of `src/bedit` minimal. New UI modules should go into the relevant
 - Avoid the QSettings group name `general`; Qt treats `General` specially in INI
   files. Autosave keys live under `autosave/`.
 - User-visible document edits should participate in undo/redo.
+- Application-wide messages use `core.application_log.get_logger()`. The main
+  window installs the Qt log-panel handler; core code must only use standard
+  Python logging and must not import the GUI handler.
 
 ## Qt Designer and generated files
 
@@ -127,6 +131,9 @@ pyside6-uic --from-imports ui/icon_editor_dialog.ui \
 
 pyside6-uic --from-imports ui/text_definition_editor.ui \
   -o src/bedit/gui/generated/ui_text_definition_editor.py
+
+pyside6-uic --from-imports ui/simulation_settings_dialog.ui \
+  -o src/bedit/gui/generated/ui_simulation_settings_dialog.py
 ```
 
 When adding a promoted/custom widget in Designer, its header must use the real