style(watchlist): the toolbar is two atomic groups — no more orphan chip

Add-controls left, filters right, justify-between: when the pane narrows, the
whole filter group drops below as a block instead of shedding its last chip.
Shorter chip labels (Active / Needed) and a slimmer search keep both groups on
one line at the tab's normal width.

frontend/src/lib/i18n.tsx

@@ -42,7 +42,7 @@ const en: Dict = {
   'wl.addPh': 'Callsign or prefix', 'wl.add': 'Add', 'wl.contest': 'Contest', 'wl.addAsContest': 'as contest', 'wl.cTotal': 'Watchlist:', 'wl.cActive': 'Active:', 'wl.cNeeded': 'Needed:', 'wl.allModes': 'All modes', 'wl.modeFilter': 'Only show spots in this mode', 'wl.patternPh': 'Auto contest (e.g. WWA)', 'wl.patternHint': 'Auto-add as contest: any spotted callsign CONTAINING this text joins the watchlist as a contest entry by itself. Empty = off; collected entries stay.',
   'wl.contestHint': 'Contest station: worked/needed is judged against the current UTC day — at 00:00 UTC every slot can be worked again.',
   'wl.searchPh': 'Search…', 'wl.famAll': 'All', 'wl.famNormal': 'DX', 'wl.famContest': 'Contest',
-  'wl.activeOnly': 'Active only', 'wl.neededOnly': 'Needed only',
+  'wl.activeOnly': 'Active', 'wl.neededOnly': 'Needed',
   'wl.empty': 'Add the callsigns or prefixes you are hunting — a prefix catches the portable forms too (RI0SP matches RI0SP/MM). Spots from the cluster appear under each entry with what they are worth.',
   'wl.noneMatch': 'Nothing matches the current filters.',
   'wl.onAir': 'ON AIR', 'wl.expedition': 'DXpedition',
@@ -566,7 +566,7 @@ const fr: Dict = {
   'wl.addPh': 'Indicatif ou préfixe', 'wl.add': 'Ajouter', 'wl.contest': 'Contest', 'wl.addAsContest': 'comme contest', 'wl.cTotal': 'Watchlist :', 'wl.cActive': 'Actives :', 'wl.cNeeded': 'Manquantes :', 'wl.allModes': 'Tous les modes', 'wl.modeFilter': 'Ne montrer que les spots de ce mode', 'wl.patternPh': 'Auto contest (ex. WWA)', 'wl.patternHint': "Ajout auto comme contest : tout indicatif spotté CONTENANT ce texte rejoint la watchlist en entrée contest tout seul. Vide = désactivé ; les entrées déjà collectées restent.",
   'wl.contestHint': "Station contest : contacté/manquant est jugé sur la journée UTC courante — à 00:00 UTC chaque créneau redevient à faire.",
   'wl.searchPh': 'Chercher…', 'wl.famAll': 'Tous', 'wl.famNormal': 'DX', 'wl.famContest': 'Contest',
-  'wl.activeOnly': 'Actifs seulement', 'wl.neededOnly': 'Manquants seulement',
+  'wl.activeOnly': 'Actifs', 'wl.neededOnly': 'Manquants',
   'wl.empty': "Ajoutez les indicatifs ou préfixes que vous chassez — un préfixe attrape aussi les formes portables (RI0SP matche RI0SP/MM). Les spots du cluster apparaissent sous chaque entrée avec ce qu'ils valent.",
   'wl.noneMatch': 'Rien ne correspond aux filtres actuels.',
   'wl.onAir': 'ON AIR', 'wl.expedition': 'DXpédition',