signpost.Registry.Pattern now takes an item override only when it starts
with a single "/" and holds no surrounding whitespace or control
characters (signpost.ValidItemPattern); a javascript: URL or a
protocol-relative //host falls through to the next layer.
- lagoon.OrderBy takes variadic lagoon.OrderOption values; lagoon.Collate(name)
emits a validated, double-quoted COLLATE clause (e.g. "pl-x-icu")
- remove the exported CheckLocale and the ICU pl-PL check from Open and Use
- framework test containers and per-test databases are plain PostgreSQL
- lagoon README, root README and docs pages drop the locale requirement;
queries-and-pagination gains a "Sorting with a collation" section
backed by ExampleCollate
