nx_deflate_huffman_test.nx

nx_deflate_huffman_test.nx -- regression smoke for the BTYPE=01 (static Huffman) and BTYPE=10 (dynamic Huffman) inflate paths. SURFACED 2026-05-18: nx_deflate.nx self-reports "CAPABILITY_COMPLETENESS: FULL -- all three BTYPE handlers (stored, static Huffman, dynamic Huffman) implemented end-to-end" but only BTYPE=00 (stored) was ever exercised by an existing smoke. Real PNGs from gen-img use BTYPE=01/10 and crashed the substrate. This test pins the Huffman paths with python-zlib ground-truth byte sequences so the false-OK can't return. Fixtures captured via: python3 -c "import zlib; co = zlib.compressobj(level=zlib.Z_BEST_SPEED, wbits=-zlib.MAX_WBITS, strategy=zlib.Z_FIXED); print(co.compress(b'Hello, world!') + co.flush())"