feat(plugin-protocol,server-shared): new package

packages/plugin-protocol/README.md

@@ -0,0 +1,31 @@
+# @proj-airi/plugin-protocol
+
+Shared protocol contracts for plugin-module communication in Project AIRI.
+
+## What it does
+
+- Defines websocket event names and payload types for module/plugin orchestration.
+- Exposes Eventa event definitions bound to protocol event names.
+- Provides shared transport/event utility types used by server and plugin runtimes.
+
+## How to use
+
+```ts
+import type { WebSocketEvent, WebSocketEventOf, WebSocketEvents } from '@proj-airi/plugin-protocol/types'
+
+import { moduleAnnounce, moduleAuthenticate } from '@proj-airi/plugin-protocol/types'
+```
+
+## When to use
+
+- You need canonical protocol contracts for plugin <-> host communication.
+- You need event name stability and matching payload definitions across runtimes.
+
+## When not to use
+
+- You only need higher-level runtime client APIs from SDK packages.
+- You are implementing app-only UI state that is not part of plugin/server transport contracts.
+
+## License
+
+[MIT](../../LICENSE)