**Minor release.** An opt-in accent stripe for callouts, a readable line-length measure for prose, a refined intent treatment on KPI tiles and stage cards, and refreshed marketing-blueprint copy — all backward-compatible.

### Added

- **[`<x-wirekit::callout>`](https://docs.wirekit.app/components/callout) gains an opt-in `stripe` prop.** It adds a one-sided accent bar and is off by default (the plain callout is the alert-style tinted border). Pass `stripe` to bring the bar back.
- **[`<x-wirekit::prose>`](https://docs.wirekit.app/components/prose) gains a `measure` prop — a readable line-length clamp.** Long-form text caps at a comfortable ~65 characters per line by default; use `measure="wide"` (~78ch) for a roomier column or `measure="none"` for the full container width. Themeable via the new `--measure-wk` token.

### Changed

- **[`<x-wirekit::callout>`](https://docs.wirekit.app/components/callout) no longer shows the accent stripe by default.** The plain callout is now the balanced tinted border; add the new `stripe` prop to restore the one-sided bar.
- **[`<x-wirekit::stat>`](https://docs.wirekit.app/components/stat) and [`<x-wirekit::stage-card>`](https://docs.wirekit.app/components/stage-card) intent treatment is now a balanced 4-sided tinted border** (previously a one-sided left bar). The intent color cue is unchanged — only the shape is refined.
- **[`<x-wirekit::prose>`](https://docs.wirekit.app/components/prose) now clamps long-form text to a readable measure by default.** Existing prose wraps at ~65ch; set `measure="none"` to restore the previous full-container-width behavior.

### Documentation

- Refreshed the marketing-blueprint demo copy (hero, testimonials, feature, and landing previews) with neutral, concrete placeholder content.