chore: regroup registry order by vendor

GLM-5.1 -> 120 (beside GLM-5.2/Turbo), DeepSeek V4 Flash -> 90.5 (beside V4-Pro), Nex-AGI -> 65 (out of the xAI block).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

models/nex-n2-pro-cc.json

@@ -4,7 +4,7 @@
   "harness": "Claude Code",
   "effort": "Max",
   "artifactDir": "nex-n2-pro/claude-code-max",
-  "order": 60,
+  "order": 65,
   "runs": {
     "mythos-craft": {
       "note": {