Adds the proposed llmstxt.org file under frontend/public/ so the SPA
nginx serves it at https://velxio.dev/llms.txt. ChatGPT-driven traffic
has had the highest engagement of any channel (82% session quality per
GA), so feeding the AI crawlers a curated, machine-readable summary
is high-leverage: the model gets accurate tier prices, supported
boards, comparison framing vs Wokwi / Tinkercad / Proteus, plus FAQ
answers — instead of stitching together a fuzzy view from blog posts.
Notable departures from the original phase-5 draft:
- Tier shape is the shipped one (Free / Maker $7 / Pro $19), not the
proposed Pro/Hobbyist + LemonSqueezy variants that never landed.
- Geo-pricing section dropped (Phase 2 deferred — same reason).
- Supported boards list reflects the actual MCU emulator coverage in
the latest velxio image, not the aspirational roadmap.
- GitHub Sync and embed iframe (D3.5) are now first-class features.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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