polish: make repo presentable for employer review (#162)

src/config.py

@@ -14,10 +14,10 @@ class Settings(BaseSettings):
     ollama_url: str = "http://localhost:11434"
 
     # LLM model passed to Agno/Ollama — override with OLLAMA_MODEL
-    # llama3.1:8b-instruct is used instead of llama3.2 because it is
-    # specifically fine-tuned for reliable tool/function calling.
+    # qwen2.5:14b is the primary model — better reasoning and tool calling
+    # than llama3.1:8b-instruct while still running locally on modest hardware.
+    # Fallback: llama3.1:8b-instruct if qwen2.5:14b not available.
     # llama3.2 (3B) hallucinated tool output consistently in testing.
-    # Fallback: qwen2.5:14b if llama3.1:8b-instruct not available.
     ollama_model: str = "qwen2.5:14b"
 
     # Set DEBUG=true to enable /docs and /redoc (disabled by default)