Release 1.4.1: Windows installer carries the streaming fix, site updated, 1.4.0 exe retired from R2

The 1.4.1 exe (signed, built-in skills verified incl. both humanizer
variants) is live at AC/AgentCompany-1.4.1-x64.exe; the download manifest
and site version track it, landing e2e green (12/12, PW_CHROME), Pages
deployed and probed end-to-end: /api/download 302s to 1.4.1, download-stats
healthy, superseded 1.4.0 exe deleted after verification. macOS DMGs stay
pinned at 1.4.0 until rebuilt on a mac.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "agentcompany-new",
-  "version": "1.4.0",
+  "version": "1.4.1",
   "private": true,
   "type": "module",
   "description": "Enterprise Electron control plane for AI agent companies.",