feat(grids): one world, a zoom that holds it, and the modes to filter it

The grid-square map drew the world two or three times across a wide window, each
copy carrying the same squares — worldCopyJump earns its keep on the great-circle
map, where a path reads better crossing a second Asia, and costs only confusion
on a map of where you have been heard. It is off here, the tiles no longer wrap,
and addBasemap takes the option so the other map is untouched.

Zooming out far enough to hold Greenland and Antarctica together was impossible:
the floor was zoom 1, and one step further out was already too far. Zoom 0 is
the whole planet, and the view now opens on a fitWorld computed from the
container rather than a guessed zoom level — repeated once when the container
first has a real size, because the tab is mounted hidden.

That exposed the next thing: Esri answers a request outside the world with a grey
"Map data not yet available" tile, and zoomed out that was most of the screen.
The tile layers carry a bounds, so those tiles are never asked for, and what is
left beside the planet is the panel's own background instead of a white slab.

Finally the mode filter offers All, Phone and CW beside Digital and FTx. The
backend already accepted all of them — GridSquares understands "ALL" and the
ModeClass names — only the interface was offering two.

frontend/src/lib/i18n.tsx

@@ -312,7 +312,7 @@ const en: Dict = {
   'clu.slotHighlightHint': '(by callsign, whatever the entity status says)',
   'rq.searchPh': 'Search callsign…  4S · *4S · *4S*', 'rq.searchTip': 'A plain word matches the START of a callsign: 4S finds 4S7AB. * is any run of characters and ? is exactly one, so *4S ends with 4S, *4S* contains it anywhere, and F?BPO matches F4BPO.',
   'gsc.scope': 'Match a square by', 'gsc.hunt': 'Chase', 'gsc.huntNew': 'New — never worked', 'gsc.huntUnconf': 'New and unconfirmed', 'gsc.scope_band_digi': 'This band + any digital mode', 'gsc.scope_band_mode': 'This band + this exact mode', 'gsc.scope_band_ftx': 'This band + any FT mode (FT8/FT4/FT2)', 'gsc.scope_mix_digi': 'Any band + any digital mode', 'gsc.scope_mix_mode': 'Any band + this exact mode', 'gsc.scope_mix_ftx': 'Any band + any FT mode (FT8/FT4/FT2)', 'gsc.hint': 'Decides when a square stops being NEW. Narrower means more squares to chase: per band and per exact mode is the most demanding, any band and any digital mode the least. Chasing unconfirmed as well keeps a square wanted until a QSL, LoTW or eQSL confirmation arrives — it is still missing from the award until then.',
-  'gsm.basemap': 'Basemap', 'gsm.title': 'Grid squares', 'gsm.digital': 'Digital', 'gsm.ftx': 'FTx', 'gsm.confirmed': 'confirmed', 'gsm.worked': 'worked', 'gsm.colConfirmed': 'Colour for confirmed squares', 'gsm.colWorked': 'Colour for worked (unconfirmed) squares', 'gsm.colReset': 'Back to the theme colours', 'gsm.refresh': 'Recount from the log', 'gsm.count': '{n} squares · {c} confirmed',
+  'gsm.basemap': 'Basemap', 'gsm.title': 'Grid squares', 'gsm.all': 'All', 'gsm.phone': 'Phone', 'gsm.cw': 'CW', 'gsm.digital': 'Digital', 'gsm.ftx': 'FTx', 'gsm.confirmed': 'confirmed', 'gsm.worked': 'worked', 'gsm.colConfirmed': 'Colour for confirmed squares', 'gsm.colWorked': 'Colour for worked (unconfirmed) squares', 'gsm.colReset': 'Back to the theme colours', 'gsm.refresh': 'Recount from the log', 'gsm.count': '{n} squares · {c} confirmed',
   'bo.nearKm': 'Count receivers within', 'bo.nearKmHint': 'A report proves YOUR path only if it was collected near you. Smaller is more local but leaves fewer receivers listening — too small and the watch has nothing to look at. 300 km borrows a whole region; 100 km suits 2 m, where a duct is narrow.',
   'bo.open': 'open', 'bo.liveTip': '{band} is open — {n} stations, ~{km} km, {sector}{season}. Click for the band map.', 'bo.enable': 'Watch for band openings', 'bo.enableHint': '(10, 12, 6, 4 and 2 m. Switching this on adds the two RBN nodes and subscribes to the PSK Reporter feed — the detection needs far more ears than a cluster can give it.)', 'bo.feedUp': 'PSK Reporter feed up — {n} decodes seen', 'bo.feedDown': 'PSK Reporter feed down — needs your station grid, and a moment to connect', 'clu.spotTtl': 'Spot lifetime', 'clu.spotTtlNever': 'Keep', 'clu.spotTtlHint': 'minutes — spots older than this are removed from the list and the band maps. 0 keeps them.', 'clu.chaseGrids': 'Chase new grids', 'clu.chaseGridsHint': '(learns locators from your own WSJT-X decodes AND from PSK Reporter, and keeps them in their own database so the cluster shows them from the first second)', 'clu.chaseGridsStat': '{n} locators known — {p} waiting to be written', 'clu.workedSameSlot': 'Already worked only on the same slot',
   'clu.macros': 'Command buttons', 'clu.macrosHint': 'A named button beside the cluster command box. Leave the command empty and the button is not shown.',
@@ -793,7 +793,7 @@ const fr: Dict = {
   'clu.slotHighlightHint': "(par indicatif, quel que soit le statut de l'entité)",
   'rq.searchPh': 'Chercher un indicatif…  4S · *4S · *4S*', 'rq.searchTip': 'Un mot simple correspond au DÉBUT de l’indicatif : 4S trouve 4S7AB. * remplace n’importe quelle suite de caractères et ? exactement un, donc *4S se termine par 4S, *4S* le contient n’importe où, et F?BPO correspond à F4BPO.',
   'gsc.scope': 'Carré déjà fait selon', 'gsc.hunt': 'Chasser', 'gsc.huntNew': 'Nouveau — jamais contacté', 'gsc.huntUnconf': 'Nouveau et non confirmé', 'gsc.scope_band_digi': 'Cette bande + tout mode numérique', 'gsc.scope_band_mode': 'Cette bande + ce mode exact', 'gsc.scope_band_ftx': 'Cette bande + tout mode FT (FT8/FT4/FT2)', 'gsc.scope_mix_digi': 'Toutes bandes + tout mode numérique', 'gsc.scope_mix_mode': 'Toutes bandes + ce mode exact', 'gsc.scope_mix_ftx': 'Toutes bandes + tout mode FT (FT8/FT4/FT2)', 'gsc.hint': 'Détermine quand un carré cesse d’être NEW. Plus c’est étroit, plus il y a de carrés à chasser : par bande et par mode exact est le plus exigeant, toutes bandes et tout numérique le moins. Chasser aussi les non confirmés garde un carré recherché jusqu’à une confirmation QSL, LoTW ou eQSL — il manque toujours au diplôme d’ici là.',
-  'gsm.basemap': 'Fond de carte', 'gsm.title': 'Carrés locator', 'gsm.digital': 'Numérique', 'gsm.ftx': 'FTx', 'gsm.confirmed': 'confirmés', 'gsm.worked': 'contactés', 'gsm.colConfirmed': 'Couleur des carrés confirmés', 'gsm.colWorked': 'Couleur des carrés contactés (non confirmés)', 'gsm.colReset': 'Revenir aux couleurs du thème', 'gsm.refresh': 'Recompter depuis le journal', 'gsm.count': '{n} carrés · {c} confirmés',
+  'gsm.basemap': 'Fond de carte', 'gsm.title': 'Carrés locator', 'gsm.all': 'Tout', 'gsm.phone': 'Phonie', 'gsm.cw': 'CW', 'gsm.digital': 'Numérique', 'gsm.ftx': 'FTx', 'gsm.confirmed': 'confirmés', 'gsm.worked': 'contactés', 'gsm.colConfirmed': 'Couleur des carrés confirmés', 'gsm.colWorked': 'Couleur des carrés contactés (non confirmés)', 'gsm.colReset': 'Revenir aux couleurs du thème', 'gsm.refresh': 'Recompter depuis le journal', 'gsm.count': '{n} carrés · {c} confirmés',
   'bo.nearKm': 'Compter les récepteurs à moins de', 'bo.nearKmHint': 'Un report ne prouve TON chemin que s’il a été collecté près de chez toi. Plus petit est plus local, mais laisse moins de récepteurs à l’écoute — trop petit, la veille n’a plus rien à observer. 300 km emprunte les oreilles de toute une région ; 100 km convient au 2 m, où un conduit est étroit.',
   'bo.open': 'ouvert', 'bo.liveTip': '{band} est ouvert — {n} stations, ~{km} km, {sector}{season}. Cliquer pour le bandmap.', 'bo.enable': 'Surveiller les ouvertures de bande', 'bo.enableHint': "(10, 12, 6, 4 et 2 m. Activer ajoute les deux nœuds RBN et souscrit au flux PSK Reporter — la détection a besoin de bien plus d oreilles qu un cluster ne peut en fournir.)", 'bo.feedUp': 'Flux PSK Reporter actif — {n} décodages vus', 'bo.feedDown': 'Flux PSK Reporter inactif — il faut ton locator, et un instant pour se connecter', 'clu.workedSameSlot': 'Déjà contacté seulement sur le même slot',
   'clu.macros': 'Boutons de commande', 'clu.macrosHint': 'Un bouton nommé à côté du champ de commande du cluster. Laisse la commande vide et le bouton n’est pas affiché.',