chore(config): Update AI model configuration

Author: RajaRakoto

.taskmaster/config.json

@@ -2,20 +2,20 @@
   "models": {
     "main": {
       "provider": "openrouter",
-      "modelId": "qwen/qwen3-coder:free",
-      "maxTokens": 65536,
+      "modelId": "qwen/qwen3-235b-a22b",
+      "maxTokens": 24000,
       "temperature": 0.2
     },
     "research": {
       "provider": "openrouter",
-      "modelId": "qwen/qwen3-coder:free",
-      "maxTokens": 65536,
-      "temperature": 0.1
+      "modelId": "qwen/qwen-turbo",
+      "maxTokens": 32768,
+      "temperature": 0.2
     },
     "fallback": {
       "provider": "openrouter",
-      "modelId": "qwen/qwen3-coder:free",
-      "maxTokens": 65536,
+      "modelId": "qwen/qwen3-235b-a22b",
+      "maxTokens": 24000,
       "temperature": 0.2
     }
   },