Feature work bracketed by a substantial platform stability pass: a PHP 8 warning sweep and a broken deploy pipeline I traced and repaired.

I built a quote module with ACF field registration across several CPT templates, an SVG line graphic rendered with currentColor so it inherits theme color, and semantic figure/figcaption markup for the pull quotes. On the stability side, I swept the codebase clearing PHP 8 warnings (array offsets on bool and null, undefined variables and array keys, and array-to-string conversions) and traced a run of failing deploys to a broken GitHub Actions cache step, which I rewrote along with the rest of the workflow.