registerSettings、Composer 菜单与自定义消息：扩展设置与自定义 UI

aether.registerSettings(definition: AetherSettingsDefinition): () => void;

interface AetherSettingsDefinition {
  id: string;
  title: string;
  subtitle?: string;
  icon?: string;
  order?: number;
  sections: AetherSettingsSection[];
}

interface AetherSettingsSection {
  id?: string;
  title?: string;
  description?: string;
  settings: AetherSettingDefinition[];
}

aether.registerSettings({
  id: "preferences",
  icon: "settings",
  title: "Preferences",
  subtitle: "Extension behavior",
  sections: [{
    title: "General",
    description: "Configure extension behavior",
    settings: [
      { id: "endpoint", type: "text", label: "Endpoint", default: "https://example.com" },
      { id: "enabled", type: "toggle", label: "Enabled", default: true },
      {
        id: "mode",
        type: "select",
        label: "Mode",
        options: [
          { value: "fast", label: "Fast" },
          { value: "quality", label: "Quality" },
        ],
        default: "fast",
      },
    ],
  }],
});

aether.registerComposerMenuItem(definition: AetherComposerMenuItemDefinition): () => void;

aether.registerComposerMenuItem({
  id: "insert-template",
  title: "Insert Code Template",
  subtitle: "Append boilerplate to prompt",
  icon: "code",
  action: "insert-template-action",
  args: { templateId: "react-component" },
});

aether.registerMessageType(definition: AetherMessageTypeDefinition): () => void;

aether.registerMessageType({
  type: "status_card",
  title: "Status Card",
  icon: "info",
  render: ({ message }) =>
    ui.card([
      ui.text(String(message.title ?? "Status"), { style: "title" }),
      ui.text(String(message.body ?? ""), { style: "body" }),
    ]),
});

// 追加自定义消息到当前聊天：
await aether.messages.append("status_card", {
  title: "Deployment Complete",
  body: "Build finished in 42s.",
});