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_modules/@rollup/rollup-darwin-arm64/README.md

@@ -0,0 +1,3 @@
+# `@rollup/rollup-darwin-arm64`
+
+This is the **aarch64-apple-darwin** binary for `rollup`

node_modules/@rollup/rollup-darwin-arm64/package.json

@@ -0,0 +1,22 @@
+{
+  "name": "@rollup/rollup-darwin-arm64",
+  "version": "4.53.2",
+  "os": [
+    "darwin"
+  ],
+  "cpu": [
+    "arm64"
+  ],
+  "files": [
+    "rollup.darwin-arm64.node"
+  ],
+  "description": "Native bindings for Rollup",
+  "author": "Lukas Taegert-Atkinson",
+  "homepage": "https://rollupjs.org/",
+  "license": "MIT",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/rollup/rollup.git"
+  },
+  "main": "./rollup.darwin-arm64.node"
+}