chore(release): bump version to 0.1.0b6 for v0.1.0-beta.6 (#125)
Ships three viewer PRs since beta.5:
- #122 bundle markdown + figures into zip on download
- #123 sr-only landmark headings for screen reader navigation
- #124 responsive mobile layout for the pipeline viewer
No pipeline phase changes; pipeline-phases.md unchanged.
Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>