nx_nxa_stream_emit.nx

nx_nxa_stream_emit.nx -- SOVEREIGN STREAMING NXA viewer emitter. The embedded-base64 viewer (nx_nxa_view_emit) proves small models; this one emits a page that FETCHES the .nxa over HTTP with live progress, verifies every checksum in the browser (exact 64-bit rolling check done in two 32-bit Number lanes -- no BigInt in the hot loop, ~10x faster on 9M-word files), auto- detects the model's up axis, and renders MILLIONS of triangles in WebGL2 at device resolution. This is the modern-polygon-count path: the file is served, not embedded, so size is unbounded. The edge serves static files only up to ~4MB (measured: 4MB=200, 8MB=500), so big NXAs ship as 4MB parts (<url>.pNN) the page refetches and reassembles -- transport chunking, the format bytes untouched. nparts=1 means a single unsplit fetch. INTEROP SYNC LAW: the page carries <meta name="nishi-nxa"> -- third-party browsers run the emitted JS/WebGL2; the NISHI BROWSER reads the marker and renders the NXA NATIVELY instead. usage: nx_nxa_stream_emit <out.html> <title> <nxa-url-base> <nparts> <total-bytes> license_tier: ORIGINAL