[aka-blackboots]

Summary

README for every field, not only buildings

• The tagline and "What is OpenGeometry?" say what the kernel does and who uses it, including Node.js.
• A new "Use cases" table: product configurators, mechanical parts, manufacturing, architecture and construction, robotics, AI agents and prompt-to-CAD, education, and server-side STEP generation. Each row names the 3.0 features that serve it.
• The overlapping "When to use", "Why AI", "Good fit" and "Who is this for" sections become that table and a short "When not to use it".
• A section for AI agents links llms.txt and the "Use a coding agent" page, ahead of the one-page API reference.
• The quick start makes a 120 × 80 × 10 mm mounting plate with four bolt holes in one boolean call and exports it as STEP in millimetres, in place of the wall and door. The browser quick-start page and its spec follow it (14 STEP faces and the plate's bounds).
• The example list names the new shape pages.
• The npm description and keywords name the same fields.

New logo

• README banner: the new logo on a clear background, with a white version for GitHub dark mode.
• Docs: a horizontal version in the navbar (light and dark), the new mark as favicon, and a 1200 × 630 share image with a large card.
• The old logo files and favicon are removed.

Verification

• README, package and dist tests: 58 pass, including the type check of the new quick start.
• The quick-start browser test passes in Chromium.
• npm run check in docs/: format, index, strict validation and links pass.
• The docs navbar logo checked locally in light and dark mode.