fix: use openclaw/plugin-sdk/mattermost subpath for directory.ts imports

extensions/mattermost/src/mattermost/directory.ts

@@ -1,4 +1,8 @@
-import type { OpenClawConfig, ChannelDirectoryEntry, RuntimeEnv } from "openclaw/plugin-sdk";
+import type {
+  ChannelDirectoryEntry,
+  OpenClawConfig,
+  RuntimeEnv,
+} from "openclaw/plugin-sdk/mattermost";
 import { listMattermostAccountIds, resolveMattermostAccount } from "./accounts.js";
 import {
   createMattermostClient,

src/plugin-sdk/mattermost.ts

@@ -38,6 +38,7 @@ export type {
   ChannelMessageActionAdapter,
   ChannelMessageActionName,
 } from "../channels/plugins/types.js";
+export type { ChannelDirectoryEntry } from "../channels/plugins/types.core.js";
 export type { ChannelPlugin } from "../channels/plugins/types.plugin.js";
 export { createReplyPrefixOptions } from "../channels/reply-prefix.js";
 export { createTypingCallbacks } from "../channels/typing.js";