Stitch sketch-to-HTML demo proves out

The hot take is that this is less about one magical model and more about chaining the right models and post-processing together.

• –gpt-image-2 appears capable enough to produce believable, high-fidelity UI screenshots, which makes the first half of the pipeline credible
• –The real difficulty is translating pixels into structured HTML without losing layout, spacing, and component semantics
• –This is better read as a tutorial/proof-of-concept than a launch, but it validates the category Stitch is aiming at
• –For developers, the signal is that design-to-code is becoming a workflow orchestration problem, not a single-model breakthrough