feat(codex-bridge): hide 9Router combos in Codex, drop the config backup (beta.22)

Combos that come from 9Router, directly or through the gateway's 9router
provider, are no longer added to Codex's model list; the gateway's own combos
keep their plain names. The IDE no longer leaves a config.toml backup behind:
turning the setting off already restores the file byte for byte.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HRDGW1LiKcDUZYUdKBoWYW

package-lock.json

@@ -65,7 +65,7 @@
     },
     "apps/desktop": {
       "name": "aiturk-ide",
-      "version": "1.0.0-beta.21",
+      "version": "1.0.0-beta.22",
       "license": "MIT",
       "dependencies": {
         "@assistant-ui/core": "0.2.23",