Implement new MCP server usage.

Rework Agents description
Add new logging info

app.py

@@ -36,8 +36,8 @@ if "chat_history" not in st.session_state:
 #llm_model = "gpt-4o"  #Output~ 10 US$ / 1M tokens 
 #llm_model = "gpt-5.5"  #Output~ 30 US$ / 1M tokens
 MODEL_REGISTRY={
-    "OpenAI":["gpt-4o-mini","gpt-5.4-nano","gpt-5-mini","gpt-4.1","gpt-4o","gpt-3.5-turbo"],
-    "Ollama":["gemma4:e4b","llama3.1","gpt-oss:20b","qwen2.5-coder:14b","mistral-small3.2"],
+    "OpenAI":["gpt-4o-mini","gpt-5-mini","gpt-5.4-nano","gpt-4.1","gpt-4o","gpt-3.5-turbo"],
+    "Ollama":["llama3.1","gemma4:e4b","gpt-oss:20b","qwen2.5-coder:14b","mistral-small3.2"],
     }
 
 #7- Creating Sidebar
@@ -67,7 +67,7 @@ with st.sidebar:
     config.max_tokens=st.slider(
         "Max Tokens",
         min_value=100,
-        max_value=30000,
+        max_value=10000,
         value=config.max_tokens,
         step=100
     )