Blueprint landing: marketing blocks plus a blog

Found while planning barakocms.com as a barakoCMS-backed site.

The shipped blueprints cover a blog and docs. Neither covers the thing most people actually build first: a marketing site with editable page copy plus a blog.

barakocms.com is being converted to exactly that shape, with a `marketing-block` type holding the copy for each home page section (eyebrow, heading, lead, an items array, a footnote, an order) and a `post` type for the blog. The markup stays in the frontend; only the words move into the CMS.

## What to change

Once that type has been in use long enough to know its shape is right, ship it as a `landing` blueprint: `marketing-block` plus `post`. That gives an agency a starting point for the job it takes most often.

Deliberately after the fact, not before. A blueprint invented ahead of a real site is a guess.

No file, test, or entry point is named. First inspect the shipped blog and docs blueprints and the existing marketing-block and post definitions; done means a landing blueprint contains both types after their shape has been validated in use.

Written by the indexing model from the issue text.