nx_connect_decode.nx

nx_connect_decode.nx -- VIDEO ROOM receive: wire SVC layer-selection to REAL PIXELS. A sovereign integer scalable codec (no floats): BASE layer = 2x2 downscale; ENHANCEMENT layer = residual to reconstruct full resolution. A thumbnail subscription decodes BASE only; the active speaker subscription decodes BASE+ENH = the original frame BIT-EXACT (lossless). Layers are RLE-compressed and CONTENT-BLIND (decrypt-then-decode on the client; the server, lacking the key, cannot decode). This makes the receive pipeline produce VERIFIED pixels; the heavy production codecs (ecosystem h264/vp9/av1) drop into the same base+enhancement pipeline -- named substrate, not reinvented. 7 checks incl. negative controls. 100% sovereign. license_tier: ORIGINAL expect_exit: 0