- index.html: minimal shell with <template> elements for all repeated
DOM structures (node-item, device-group, device-item, ctrl-group,
ctrl-row, capture-badge); links external style.css
- style.css: all styles extracted from index.html
- lib/dom.mjs: by_id, qs, clone, show, hide helpers
- app.mjs: persistent SSE node list replaces Discover button; clicking
a node connects to it; uses clone()/replaceChildren() throughout;
no innerHTML for structure; event wiring at bottom
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>