Add ESP32 PCB layout and routing tutorial

[2bf]

/claim #44

Archived bounty issue:

• ESP32 PCB Layout and Routing docs-old#44

Summary

• add an ESP32 PCB layout/routing tutorial with a live CircuitPreview example
• show a small ESP32-WROOM carrier board with a simplified module footprint, programming header, reset/boot passives, indicator LED, antenna keepout, and ground pours
• document placement order, routing order, and production adaptation notes

Verification

• npm exec --yes prettier -- --write docs/tutorials/esp32-pcb-layout-routing.mdx
• npm exec --yes prettier -- --check docs/tutorials/esp32-pcb-layout-routing.mdx
• bun run typecheck
• bun run docusaurus build
• Embedded CircuitPreview PCB SVG endpoint returned 200, image/svg+xml, and a valid <svg> response.
• git diff --check

Notes:

• The archived docs-old issue is read-only, so I could not add /attempt #44 there before opening this PR.
• bun run format:check still checks generated .docusaurus files in this checkout, so I used Prettier on the changed MDX file directly.

AI-assisted with Codex; I reviewed the diff and kept the change scoped.

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Project	Deployment	Actions	Updated (UTC)
docs	Ready	Preview, Comment	May 20, 2026 6:35pm