feat: add MiniMax Token Plan provider

API-call-based pricing (not per-token), multimodal AI access
including M2.7, speech, image, video, and music models.

.claude/settings.json

@@ -1,6 +1,7 @@
 {
   "permissions": {
     "allow": [
+      "WebFetch(domain:*)",
       "Write(*.md)"
     ]
   }