config: use qwen_122b as classifier model

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Alexey Panfilov

config/config.yaml

@@ -56,7 +56,7 @@ routing:
   default: default
   fallback: flash_lite
   compaction_model: default
-  classifier: qwen_flash
+  classifier: qwen_122b
   classifier_min_length: 100
 
 tool_filter: