0.2.0-preview.1 — PNG, sizes, and browser SVG

Adds signed PNG/WebP rendition selection by explicit pixel width and height, plus opt-in normalized SVG delivery in the browser adapter. The Expo native adapter selects raster output and preserves old WebP caches. Existing schema-1 manifests and the mandatory legacy WebP fallback remain supported.

Install both matching core and Expo tarballs as direct dependencies. Both packages are GitHub release artifacts; they are not published to npm. Checksums are attached. The core package contains built JavaScript/declarations; Expo includes Metro-ready source.

Validation: 80 core tests including 65 shared signed contract cases; nine audit tests; Expo typecheck; Chrome PNG/WebP/SVG decode and wrong-dimension rejection checks. Native Expo UI execution is separate. The standalone Swift/Kotlin SDKs are released in their own repositories.