Stitch Build Loop skill

[gcapnias]

I really enjoyed using the Stitch Build Loop skill to create a website.

• I used the design-md skill to generate my DESIGN.md — excellent results.
• I would prefer a skill that can produce the SITE.md from an existing document that already describes the website.
• I believe the enhance-prompt skill should be integrated into the loop when creating the next-prompt.md file.
• Although there is a design system defined in DESIGN.md, the loop only extracts parts of it, which doesn't guarantee identical page layouts. There's still work to do here — for example, using a design system produced by a skill such as [nextlevelbuilder/ui-ux-pro-max-skill](https://github.com/nextlevelbuilder/ui-ux-pro-max-skill). The design-system dialog in Stitch needs improvement to behave like a true, reusable design system. Since Stitch relies on Tailwind CSS, the design system should be more closely aligned with what Tailwind supports.