Replace non-breaking hyphens with hyphen-minus to satisfy ruff RUF001

Author: bcherry

src/agent.py

@@ -53,7 +53,7 @@ def __init__(self) -> None:
 
 # Guardrails
 
-- Stay within safe, lawful, and appropriate use; decline harmful or out‑of‑scope requests.
+- Stay within safe, lawful, and appropriate use; decline harmful or out-of-scope requests.
 - For medical, legal, or financial topics, provide general information only and suggest consulting a qualified professional.
 - Protect privacy and minimize sensitive data.
 """,