fix(quotes): KPI value and label as a description list

Part of the Markdown for Agents Phase 1 epic (see #5652). kestra.io has Cloudflare Markdown for Agents enabled: `Accept: text/markdown` converts the SSR HTML at the edge, so defects in the HTML end up in what AI agents read. Cloudflare strips `nav`/`header`/`footer`/scripts/styles/inline SVG, ignores `aria-hidden` and empty `alt`, keeps `.visually-hidden` text and `display:none` content, and renders `

` as separate lines (all verified on production).

## Problem
`Quotes.vue` puts the KPI value and name in two adjacent inline ``s on separate template lines. Vue condenses the newline away and the converter concatenates inline siblings, producing `Billionsof records processed securely` and `100+users empowered`.

## Scope
- Turn `.kpis` into `

` with `

…

…

`, following the existing pattern in `lp/workflow-orchestration/Trusted.astro`.
- Retarget the scoped `.kpi span` rule to `dd`, add `dd { margin: 0 }`.

## Done when
- No glued value/label pairs in `/` or `/enterprise` Markdown.
- Pixel-identical KPI row.

Can be folded into the testimonial-panels PR.

Start with Quotes.vue and compare its KPI markup with the existing pattern in lp/workflow-orchestration/Trusted.astro. Convert the KPI structure and retarget the scoped styling as specified, then verify the Markdown output for / and /enterprise has separated value and label pairs and that the KPI row remains pixel-identical.

Written by the indexing model from the issue text.