Screenshots for every project, in both themes

The Projects board went from a text table to something you can actually browse: every project now carries real screenshots, with a light/dark toggle per thumbnail. Thumbnails default to the dark theme, which is what this site breathes anyway.

Two judgment calls along the way. The client showcases needed sorting: one clinic entry started as an anonymized mock, but the anonymization cost the site its best features, so the real site is linked now. And the Luna CDN visor screenshot showed cards for client media that should not be public; those got censored before the shot went up.

Small change on paper. In practice, the work index finally shows the work.