v1.16.0

Highlight: a change's non-Markdown artifacts are visible. A schema sets each artifact's filename through generates:, and not every artifact is Markdown — event-driven requires asyncapi.yaml. spek discovered only root *.md and the specs/ tree, so such a change rendered every tab except the one its schema asks for.

• Root .yaml / .yml / .json files are artifacts, shown as syntax-highlighted text. The tab is named for the file's stem with a format badge, using the full filename only when a Markdown artifact shares it. Thanks to @nthansen (Norman Hansen) (#50)
• They sort into their schema position, count in the change-list badge, are reachable by search, and refresh live on edit — on every surface
• Discovery stays root-only and skips dotfiles, so .openspec.yaml and subdirectory files never become tabs
• Code fences in proposal.md / design.md are highlighted too. A fence with no language stays plain
• Internal: @spekjs/core 1.11.0 adds the "data" kind and the shared file listing behind count, search and discovery