OpenBuddy 插件体系（PLUGIN_SYSTEM）

UnifiedPluginManifest.surfaces = bundle | pi | renderer | remote | typert | cordis

export interface CapabilityOwnership {
  capability: string;      // "mcp" | "permission" | "goal" | ...
  piPlugin: string;        // 原生 pi 包（passthrough 时接管）
  openbuddyPlugin: string; // OpenBuddy 插件（Cordis 兜底）
  serviceKey: string;      // Cordis service key
  passthrough: boolean;    // 是否 passthrough-eligible
  pluginId: string;        // passthrough 时跳过的插件 id
}

spec → findCompatibilityAdapter(spec)
  ├─ 匹配 adapter 且 passthrough → recordPassthrough(capability) → 跳过 Cordis mount
  ├─ 匹配 adapter 且非 passthrough → 创建 openbuddy-adapter:<id> 工厂（投影）
  ├─ 匹配 builtin 工厂 → 创建 inline 工厂
  └─ 否则 → 解析外部 pi 原生插件 source

phase: prepare → cordis → artifacts → pi → mcp → renderer → remote → typert → rollback → commit

// package.json 或 openbuddy.plugin.v1 manifest
{
  "schema": "openbuddy.plugin.v1",
  "name": "my-plugin",
  "surfaces": [
    { "kind": "pi", "namespace": "openbuddy" },
    { "kind": "renderer", "namespace": "openbuddy" },
    { "kind": "remote", "namespace": "openbuddy" }
  ]
}

// extensions/my-tool.ts
export default (pi) => {
  pi.tools.register("my_tool", { description: "..." }, async (args) => { ... });
};

// client.tsx
export default function MyWidget() { return <div>...</div>; }

// remote.ts
export const methods = {
  myMethod: async (args) => { ... },
};

queue.enqueue("plugin-reload", "my-plugin", async (transaction) => {
  transaction.phase("pi", "pi");
  await loadPiSurface();
  transaction.receipt("pi");

  transaction.phase("renderer", "renderer");
  await loadRendererSurface();
  transaction.receipt("renderer");

  transaction.phase("remote", "remote");
  await loadRemoteSurface();
  transaction.receipt("remote");
});