I have a traditional household bulb wired to a smart relay switch and I want to control it purely through natural voice prompts. The task is to build a lightweight ChatGPT-based agent that listens for a simple command like “turn the light on” or “switch the light off,” passes that intent to the relay, and gives an audible or textual confirmation that the action succeeded. The hardware side is already covered—I can expose the relay through HTTP, MQTT, or a similar local API—so the job centres on the software layer: • A small program (Python is fine, but I’m open) that taps into the OpenAI API, performs speech-to-text, parses intent, then fires the relay command. • Voice only: no need for a text UI, though a minimal log window for debugging would be useful. • Clear installation steps so I can drop the code onto any single-board computer (Raspberry Pi or ESP32 if you prefer) and have it autostart on boot. Acceptance is straightforward: I say “Hey light, turn on,” the bulb turns on within a second or two; I say “turn off,” it goes dark just as fast. Include concise documentation and any config files so I can extend the vocabulary later.