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RFC 001: Browser support floor (Tailwind v4 / djed preset)

Accepted — Atlas workstation and docs adopt the same floor as Tailwind CSS v4.

Tailwind v4 targets modern evergreen browsers. Before Phase A makes djed-tailwind-preset the first imported theme layer, we must align product support with that floor or provide an explicit compatibility program (out of scope for this refresh).

  • Supported minimums (align with Tailwind CSS theme / browser guidance): Chrome 111+, Safari 16.4+, Firefox 128+.
  • Enterprise policy: If a customer requires older browsers, Phase A is blocked until a separate shim program is approved (not part of this convergence tranche).
  • QA matrices and support docs should state this floor.
  • No additional polyfill work is in scope for the refresh.