wiki: the state icon has one word beside it
wiki: sync the header-state icon legend
wiki: sync from docs/wiki (design pass, v0.15.0) Landing page with badges and a Mermaid diagram, diagrams for host/connect and the handshake, a capability matrix, prev/next footers on every page, and the two pages that were never published here: Verifying on real hardware and Video in the app.
wiki: finding devices across networks, and the Host-and-connect update
wiki: the nine pages from docs/wiki Publishing the pages that live in the repository (docs/wiki), so the wiki and the code it describes are reviewed together.