`uv export` → requirements.txt → `uv pip install` for a torch-from-cu128 project

[2026-09-27] uv export → requirements.txt → uv pip install for a torch-from-cu128 project — the export drops uv's per-package index routing; with --extra-index-url … --index-strategy unsafe-best-match, triton came from the pytorch index and failed the lock's hash. Keep uv sync and blank the project version in a deps-only stage instead (services/semif-serve/Dockerfile).