Theramin Mode and Siddartha

Added a desktop-only Theramin Mode to the homepage canvas. It uses the webcam locally in-browser to track a hand and turn vertical movement into pitch, with the waveform responding like a small, strange instrument.

It started as an “air guitar” idea, but the camera input wanted something more continuous and forgiving.

I also added a spoken-word mode for a passage from Siddartha. The reading uses an ElevenLabs voice and feeds the audio signal back into the canvas, so the waveform reacts to the voice instead of just playing over it.