- Map: min zoom = smallest integer zoom whose 256*2^z world covers the
viewport (no grey bands, no duplicated continents). Horizontal wrap is
restored (worldCopyJump, no longitude maxBounds) so Hawaii/Pacific are
reachable by dragging; vertical panning stays clamped.
- Flags: real SVGs for Catalonia, Basque Country, Galicia and England
(no Unicode region flags exist; English is not the UK). Portuguese now has
Brasil (pt) and Portugal (pt-PT).
- pt-PT shares the pt dictionary with a European drift for the visible chrome
(Guardar, Palavra-passe, Autocarro, Utilizador, ...).
- check-i18n covers pt-PT: 24 codes at 100%; tsc/tests/build green.
