feat(codex-bridge): change the chat model by saying so; bridge 8, IDE 1.0.0-beta.27

A model picked on the phone only arrives with a typed message that starts a turn. The bridge now
handles "modeli X yap" itself: per-chat routing, same-turn handover when a model is working,
truthful answer to "which model", and a lone "." joining a running turn no longer cuts the work.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/desktop/package.json

@@ -2,7 +2,7 @@
   "name": "aiturk-ide",
   "productName": "AITURK IDE",
   "private": true,
-  "version": "1.0.0-beta.26",
+  "version": "1.0.0-beta.27",
   "description": "TurkServis resmi yapay zekâ geliştirme ortamı. Hermes Agent tabanlıdır.",
   "author": "AITURK / TurkServis",
   "repository": {