README.md: Getting Started leads with make targets; a Backend section
gives netwatch-server's routes and how the image builds and runs it;
the checks are GET requests; the WAN host list, health states, summary
figures, sorting and missing features match src/main.js; the TODO
section points to TODO.md, which holds the one to-do list.
backend/README.md: its TODO section points to TODO.md too, whose
Future Steps take its three open items.
TODO.md: Workflow branches from next and opens the PR against next;
Status, Next Step and Future Steps describe the open work, linked to
its issue where one exists.
test/viewport/README.md: the unit tests run on Node's test runner,
not vitest.
Model: opus-5-5
sneak