Dev split coli_cuda_tensor_upload into two symbols: the plain 7-arg
tensor_upload (no gs) for fmt!=4, and tensor_upload_g (8-arg, with gs)
for fmt=4 grouped. The DLL-side _g sets a g_upload_gs global the plain
upload reads internally. Adapted all call sites:
- colibri.c: qt_cuda_upload already dispatches (_g for fmt=4, plain
otherwise) — kept dev's version. layer_cuda_shard_kvb was calling the
plain upload with gs; switched to tensor_upload_g.
- backend_loader.c: the C-API wrapper matches dev's 7-arg signature;
tensor_upload_g dispatched separately.
- backend_cuda.cu: cache-hit check uses g_upload_gs (not a gs param);
coli_cuda_matmul dispatches _g when gs>0; the grouped-expert host
fallback quant_matmul calls pass gs=0,ng=1 (host tier is per-row).
- Kept dev's fault-injection hook, scale_count field, and fmt=4 support
in the grouped-expert path (all_q4/any_g4 tracking).
- tests: kept dev's comprehensive tensor_upload test (cached reuse,
temp-buffer survival, upload-failure accounting, fault injection).
Build-verified: colibri.exe + coli_cuda.dll both compile clean.
woolcoxm
8b69c89f26