Add root endpoint for health check and update server port

- Introduced a new root endpoint (`/`) that provides a health check response, including application status and available endpoints.
- Updated the server to run on port 8080 instead of the previous port 7860, aligning with the latest configuration standards.
- These changes enhance the application's monitoring capabilities and improve accessibility for health checks.

main.py

@@ -14,6 +14,20 @@ app = FastAPI(title="PropAgent", description="WhatsApp AI Agent with Supabase in
 # Include all API routes
 app.include_router(router)
 
+# --- Root Endpoint ---
+@app.get("/")
+async def root():
+    """Root endpoint for health check"""
+    return {
+        "message": "PropAgent WhatsApp AI Agent is running!",
+        "status": "healthy",
+        "endpoints": {
+            "webhook": "/webhook",
+            "health": "/health",
+            "ping": "/ping"
+        }
+    }
+
 # --- WhatsApp Webhook Handler ---
 @app.post("/webhook")
 async def receive_message(req: Request):
@@ -113,4 +127,4 @@ async def startup_event():
 
 if __name__ == "__main__":
     import uvicorn
-    uvicorn.run(app, host="0.0.0.0", port=7860)
+    uvicorn.run(app, host="0.0.0.0", port=8080)