feat(desktop): real Windows inline reply via SnoreToast -tb + sender/group avatar

- node-notifier's WindowsToaster forwards raw opts to SnoreToast, so inject -tb (reply box)
  + -p (image). Reuses its named-pipe + result parsing (exit 5 = TextEntered). No pwsh needed.
  Logs the raw toast result to userData/toast-debug.log to confirm the reply field on real HW.
- home.html: notifAvatarDataUrl draws the DM sender's pic / group's DP (else colored initials)
  to a round PNG and passes it as the toast image. Reply -> sendReplyTo; click -> open chat.
- dropped powertoast (ESM + needs pwsh 7, absent here). build batch22.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

desktop/package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "biz-connect-desktop",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "biz-connect-desktop",
-      "version": "0.1.1",
+      "version": "0.1.2",
       "dependencies": {
         "electron-updater": "^6.3.9",
         "node-notifier": "^10.0.1"