feat(ui): Improve text rendering clarity with 3x font oversampling

src/app_controller.py

@@ -324,7 +324,8 @@ class AppController:
    'manual_approve': 'ui_manual_approve',
    'inject_file_path': '_inject_file_path',
    'inject_mode': '_inject_mode',
-   'show_inject_modal': '_show_inject_modal'
+   'show_inject_modal': '_show_inject_modal',
+   'bg_shader_enabled': 'bg_shader_enabled'
   }
   self._gettable_fields = dict(self._settable_fields)
   self._gettable_fields.update({
@@ -346,7 +347,8 @@ class AppController:
     '_inject_file_path': '_inject_file_path',
     '_inject_mode': '_inject_mode',
     '_inject_preview': '_inject_preview',
-    '_show_inject_modal': '_show_inject_modal'
+    '_show_inject_modal': '_show_inject_modal',
+    'bg_shader_enabled': 'bg_shader_enabled'
    })
   self.perf_monitor = performance_monitor.get_monitor()
   self._perf_profiling_enabled = False
@@ -783,6 +785,11 @@ class AppController:
   self.ui_summary_only = proj_meta.get("summary_only", False)
   self.ui_auto_add_history = disc_sec.get("auto_add", False)
   self.ui_global_system_prompt = self.config.get("ai", {}).get("system_prompt", "")
+  
+  gui_cfg = self.config.get("gui", {})
+  from src import bg_shader
+  bg_shader.get_bg().enabled = gui_cfg.get("bg_shader_enabled", False)
+  
   _default_windows = {
    "Context Hub": True,
    "Files & Media": True,
@@ -2077,12 +2084,15 @@ class AppController:
   }
   self.config["ai"]["system_prompt"] = self.ui_global_system_prompt
   self.config["projects"] = {"paths": self.project_paths, "active": self.active_project_path}
+  from src import bg_shader
   self.config["gui"] = {
    "show_windows": self.show_windows,
    "separate_message_panel": getattr(self, "ui_separate_message_panel", False),
    "separate_response_panel": getattr(self, "ui_separate_response_panel", False),
    "separate_tool_calls_panel": getattr(self, "ui_separate_tool_calls_panel", False),
+   "bg_shader_enabled": bg_shader.get_bg().enabled
   }
+  # Explicitly call theme save to ensure self.config is updated
   theme.save_to_config(self.config)
 
  def _do_generate(self) -> tuple[str, Path, list[dict[str, Any]], str, str]: