feat: Add presence heartbeat for Matrix online status

- matrix-gateway: POST /internal/matrix/presence/online endpoint
- usePresenceHeartbeat hook with activity tracking
- Auto away after 5 min inactivity
- Offline on page close/visibility change
- Integrated in MatrixChatRoom component

node-network-app/node_modules/fast-glob/out/readers/sync.d.ts

@@ -0,0 +1,12 @@
+import * as fsStat from '@nodelib/fs.stat';
+import * as fsWalk from '@nodelib/fs.walk';
+import { Entry, Pattern, ReaderOptions } from '../types';
+import Reader from './reader';
+export default class ReaderSync extends Reader<Entry[]> {
+    protected _walkSync: typeof fsWalk.walkSync;
+    protected _statSync: typeof fsStat.statSync;
+    dynamic(root: string, options: ReaderOptions): Entry[];
+    static(patterns: Pattern[], options: ReaderOptions): Entry[];
+    private _getEntry;
+    private _getStat;
+}