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.json

@@ -2,7 +2,10 @@
   "name": "biz-connect-desktop",
   "version": "0.1.2",
   "description": "Biz Connect technician desktop client — loads the Connect web UI with native screen capture",
-  "author": { "name": "BizGaze", "email": "support@bizgaze.com" },
+  "author": {
+    "name": "BizGaze",
+    "email": "support@bizgaze.com"
+  },
   "main": "main.js",
   "scripts": {
     "start": "electron .",
@@ -19,12 +22,23 @@
   "build": {
     "appId": "com.bizgaze.connect.desktop",
     "productName": "Biz Connect",
-    "directories": { "buildResources": "build", "output": "dist" },
-    "asarUnpack": ["**/node_modules/node-notifier/**"],
-    "publish": [
-      { "provider": "generic", "url": "https://remote.bizgaze.com/downloads/" }
+    "directories": {
+      "buildResources": "build",
+      "output": "dist"
+    },
+    "asarUnpack": [
+      "**/node_modules/node-notifier/**"
     ],
-    "win": { "target": "nsis", "icon": "build/icon.ico" },
+    "publish": [
+      {
+        "provider": "generic",
+        "url": "https://remote.bizgaze.com/downloads/"
+      }
+    ],
+    "win": {
+      "target": "nsis",
+      "icon": "build/icon.ico"
+    },
     "nsis": {
       "oneClick": true,
       "perMachine": false,
@@ -33,7 +47,14 @@
       "shortcutName": "Biz Connect",
       "runAfterFinish": true
     },
-    "mac": { "target": "dmg", "category": "public.app-category.business", "icon": "build/icon.ico" },
-    "linux": { "target": "AppImage", "category": "Network" }
+    "mac": {
+      "target": "dmg",
+      "category": "public.app-category.business",
+      "icon": "build/icon.ico"
+    },
+    "linux": {
+      "target": "AppImage",
+      "category": "Network"
+    }
   }
 }