Update wiki for XDS → Astryx rename
Refresh outdated references across all wiki articles to match the current
codebase after the XDS → Astryx rebrand:
- Package scope @xds/* → @astryxdesign/* (theme-default/theme-daily →
theme-neutral; ESLint rule → @astryx/*)
- CLI command xds → astryx; fix stale commands (build-theme → theme build,
agent-docs folded into init)
- CSS/layers: xds.css → astryx.css, @layer xds → @layer astryx-base,
@layer xds.theme → @layer astryx-theme
- Config key "xds" → "astryx"; env var XDS_THEME → ASTRYX_THEME
- Repo facebookexperimental/xds → facebook/astryx; versions 0.0.15 → 0.1.1
- Swizzle output dir components/xds/ → components/astryx/
- API rename xdsThemeProps → themeProps (verified against source)
- Asset set xds_oss → astryx (browse via internalfb.com/assets/set/astryx)
- Correct component-purity docs: components are unprefixed (no "Astryx" prefix)
Co-authored-by: Cursor <cursoragent@cursor.com>