v0.8.3's published binaries could never start the public relay; this
release carries that fix, the build guard that keeps a malformed injected
hub from shipping again, the control-plane failure classification, and the
update-check fallback.
The prebuilt op-auth libraries are version-pinned through their signed
provenance, so a 0.8.4 build requires 0.8.4 artifacts; the 0.8.3 archives
are refused rather than silently linked.
Plan 3 of the web embedding SDK: @zseven-w/op-web-sdk-react and -vue — thin
read-only framework adapters over the TS core. Each: <DesignView> (canvas +
viewer lifecycle), provider/inject of OpViewer, and read-only
useDocument/useViewport/useActivePage. React via useSyncExternalStore
(cache-invalidate-on-event); Vue via an async shallowRef provider so children
inject the viewer after load. Self-contained (no pen-* deps; framework peer);
React 5/5 + Vue 4/4 tests; both tsc clean.
