Release 1.4.8 (2026-05-01)

Bug fixes

• replace pip install with uv tool install in docker cache build Make _build_cached_image raise RuntimeError on container creation failure and cache build failure instead of silently returning the base image.

Documentation

• add spec, plan, and pushback review for uv tool install and guard cleanup Design spec with pushback-driven updates (principle 6: errors are fatal, _build_cached_image failures fatal, docs workflow failure fatal, pip install elimination, warning-to-fatal audit). Implementation plan with TDD steps and codebase-wide verification greps. Pushback report documenting all findings and resolutions.