subagenttasks

Extend design-system-audit.sh to check for overflow-wrap/min-width grid gap

The audit script only ever checked display-p3/reduced-motion/safe-area/view-transition/text-wrap/backdrop-filter/scrollbar-width, so the grid-overflow bug class was structurally invisible to it across multiple prior "full family audit" passes. Added a third hard-gate criterion: any file whose CSS defines a repeating-card grid (via grid-template-columns) must also contain both overflow-wrap and min-width:0, or the audit fails it. Re-running the extended script immediately caught two more, previously-unknown real gaps predating this whole incident: subagentsubdomains.com's .card rule (overflow-wrap present, min-width:0 missing) and web/subagentjobs.com's .bcard/.bnm board-grid (neither present). Both fixed, typechecked, deployed, and the audit now passes clean (exit 0) across all 36 sites.