feat: raise configurable chat tool call limit

backend/wisegrade/config.py

@@ -1,6 +1,7 @@
 from functools import lru_cache
 from pathlib import Path
 
+from pydantic import Field
 from pydantic_settings import BaseSettings, SettingsConfigDict
 
 
@@ -23,6 +24,7 @@ class Settings(BaseSettings):
     model_timeout_seconds: int = 120
     model_concurrency: int = 2
     model_retries: int = 2
+    chat_max_tool_calls: int = Field(default=32, ge=1, le=64)
 
 
 @lru_cache