Addresses the "should" features documented as gaps in the layout
READMEs from `fdb0e680`. Audit script still reports 77 / 77 PASS,
svelte-check 0 errors.
**Flex**
- `alignContent` prop (multi-line cross-axis alignment). Maps to
`--flex-align-content`; defaults to `normal` in the recipe so it
has no effect when wrap is off. Closes the Radix / Chakra parity
gap.
**Grid**
- `inline` boolean — renders as `display: inline-grid` (paridad con
Flex.inline).
- `columns` / `rows` numeric shorthands — Radix Themes pattern.
Internally resolved to `repeat(N, minmax(0, 1fr))`. `templateColumns`
/ `templateRows` string still wins if both are passed.
- `alignContent` prop — same shape as Flex.
**Shared**
- New `LayoutAlignContent` type added to `_layout/shared.ts`
(covers start, end, center, stretch, space-between, space-around,
space-evenly, flex-start, flex-end, normal, baseline).
**Group**
- Verified `grow` boolean already implemented in `0ec2a57a` /
`591b0885` — no change needed; the README now correctly reflects it.
**Docs**
- Flex + Grid READMEs updated: comparison tables mark previously
missing features as Sí; Gaps section marks them ✅ implementado.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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