The Feb-era page described a wipe-all-test-users-per-run lifecycle,
which current doctrine explicitly forbids: the shared testuser is a
LIVE reader whose settings and history must survive every suite run,
cleanups are scoped preserve-lists, and hand-probes must be deleted.
Its recipes were also stale (no container runner, no pool rules, no
gates). The canonical home is docs/contributing/development.md
(architecture, setup, testing, project rules — kept fresh, 542 lines,
touched today), so the page was deleted rather than rewritten, with a
docRedirects entry sending old URLs there. No inbound doc links
existed.