🔐 SECURITY: Removed hardcoded API key and switched to environment variable management

.env.example

@@ -33,3 +33,4 @@ ANTHROPIC_API_KEY=
 # Application Settings
 # ─────────────────────────────────────────────────────────────────────────────
 DEBUG=false
+GUVI_API_KEY=GUVI_HACKATHON_V2

app/config.py

@@ -12,7 +12,7 @@ class Settings(BaseSettings):
     APP_NAME: str = "Scam Honeypot API"
     VERSION: str = "2.0.0"
     DEBUG: bool = False
-    GUVI_API_KEY: str = "GUVI_HACKATHON_V2"
+    GUVI_API_KEY: str = ""  # Set via environment variable 'GUVI_API_KEY'
     
     # LLM Configuration
     LLM_PROVIDER: str = "groq"