Service Registry：调用与检查 Aether 服务

readonly services: {
  list(): Promise<object>;
  describe(service: string): Promise<object>;
  invoke(service: string, method: string, args?: object): Promise<object>;
};

const catalog = await aether.services.list();

const skillsApi = await aether.services.describe("skills");

// List all skills
const skills = await aether.services.invoke("skills", "list");

// Get currently selected skills
const selection = await aether.services.invoke("skills", "getSelection");

// Enable a skill for the current chat
await aether.services.invoke("skills", "setSelected", {
  skill_id: "web-search",
  selected: true,
  scope: "current",
});

// Set default skills for all new chats
await aether.services.invoke("skills", "setSelection", {
  ids: ["web-search", "code-interpreter"],
  scope: "default",
});