* ci : fix data race between runners sharing the model cache
Two runners per mac mini share HOME, so concurrent jobs corrupt each
other downloads, converted models and venv under the shared MNT cache.
- gg_wget: download in a temp dir, publish with mv, so readers only
ever see complete files (-N cannot be combined with -O)
- convert, quantize and wikitext unzip now produce under a per-runner
scratch dir in OUT, published to MNT via hardlink when missing
- gguf-split and quantize tests get a per-runner TMP_DIR
- python venv moved from MNT to OUT
- metal, vulkan and webgpu mac jobs pass a per-runner OUT path
Assisted-by: dsh:llama.cpp/agent-qwen4 (RTX 5090 machine)
* ci : clean up scratch models after tests
Assisted-by: dsh:llama.cpp/agent-qwen4 (RTX 5090 machine)
* ci : fix q4_0 publish when a cached model exists
cp -n skips an existing file with exit code 1, so the ln fallback
aborted the qwen3 job under set -e. Publish through a unique temp
file with an atomic mv: readers never see a partial file and a
stale cached q4_0 gets replaced.
Assisted-by: dsh:llama.cpp/ggml-org/Qwen3.8-Flash-Next-GGUF (RTX 5090 machine)
* ci : cache-first gg_wget to avoid re-downloads
HF sends no Last-Modified, so wget -N re-downloads the full files on
every run. Skip the download when a non-empty cache file exists: the
HF CI artifacts are static. Downloads still go through a temp dir and
an atomic mv, so concurrent runners never read partial files.
Assisted-by: dsh:llama.cpp/ggml-org/Qwen3.8-Flash-Next-GGUF (RTX 5090 machine)
Georgi Gerganov
6b9ba4f2e8