PIPE-2738: clarify QA score bounds and add colors in pipeline-weblog
- Replace ambiguous ">0.90-1.00" score range notation with explicit mathematical inequalities (e.g., $0.90 < S \leq 1.00$) for clarity.
- Apply inline CSS styling to colorize the color names (Green, Blue, Yellow, Red) in the QA score table and the prose text below it.
PIPE-2738: Add `toc_sections` extension for CLI task page navigation
Add `toc_sections.py` to promote docstring Parameters/Notes/Examples into
real docutils sections with anchor IDs, injecting them into the Furo
right-hand TOC for easier navigation on long CLI task pages. Only injects
entries for sections that actually exist in each task's docstring.
Also adds CSS to style the promoted headings as subtle labels.
