redirectHopsLogged was a never-evicted map keyed by the anonymous
request's URL with its query, so requests to a looping address with fresh
query strings grew it without limit and logged each one. The log is now
keyed by the cycle's rule ids, repeats at most once an hour and starts
over at 1024 keys.
Pure tests of the classes package (no database): the resolver's value
chains with every layer present and absent, robots per directive, the
staging lock and drafts; the redirect graph (chains, flattened and
back-and-forth graphs, loops by exact, pattern and regex probes, the
10-hop cap); URL normalisation across every address rule; the robots
grammar over every directive combination; Google's robots.txt matcher
examples; templates and unknown placeholders; CSV export and import;
owner resolution; and every kind of the issue report.
go.mod: gorm.io/driver/postgres becomes a direct requirement (the tests'
dry-run database).
