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backend/model_manager.py

@@ -157,6 +157,10 @@ class ModelManager:
         """Rough token estimation (3 chars ≈ 1 token)."""
         return max(1, len(text) // 3)
 
+    def count_tokens(self, text: str) -> int:
+        """Count tokens in text (alias for estimate_tokens for compatibility)."""
+        return self.estimate_tokens(text)
+
     def resolve_max_tokens(self, prompt: str, requested: Optional[int]) -> int:
         """Calculate safe max_tokens given prompt length."""
         prompt_tokens = self.estimate_tokens(prompt)
@@ -219,6 +223,8 @@ class ModelManager:
             "prompt_length": len(prompt),
             "estimated_tokens": self.estimate_tokens(prompt),
             "history_messages": len(history),
+            "history_messages_used": min(len(history), max_history_messages),
+            "history_messages_total": len(history),
             "timestamp": datetime.now().isoformat(),
         }