croft.click Landing Page and Shared Landing UI

@ewanc26/landing-ui Extracted a shared landing page layout package consumed by bismuth-web, jasper-web, and malachite-web. Provides consistent hero sections, feature cards, and footer patterns across all croft.click subdomains. croft.click Added a landing page at croft.click listing all projects with logo images. Deployed as @ewanc26/croft-click in the pkgs monorepo.