feat(i18n): fill the translation backlog and add the new strings

40 keys existed only in app_es.arb and fell back to Spanish everywhere else
(15 of them in English). Most were multi-device screens: hostGame, votar,
clueIs, whoDoYouThinkIsTheImpostor, waitingPlayersSeeWord.

Adds those plus the new keys for impostor awareness, the adjusted impostor
count, the eliminated-player notice and the reconnection screen.

51 keys across the 18 supported languages.

lib/l10n/app_en.arb

@@ -349,5 +349,31 @@
         "type": "String"
       }
     }
-  }
+  },
+  "debate": "🗣️ Debate",
+  "hostGame": "Game manager",
+  "waitingPlayersSeeWord": "Waiting for everyone to see their word...",
+  "activePlayers": "Active players",
+  "playersVoted": "Have voted",
+  "waitingVoting": "Waiting for votes...",
+  "iveSeenIt": "I've seen it",
+  "clueIs": "The clue is: {category}",
+  "debatePhaseActive": "Debate phase in progress",
+  "debateInstructions": "Talk to each other and say who you think the impostor is. When you're ready, call for a vote.",
+  "solicitarVotacion": "Call for a vote",
+  "votacionSolicitada": "Vote requested",
+  "whoDoYouThinkIsTheImpostor": "Who is the impostor?",
+  "selectOnePlayer": "Select a player to vote for",
+  "votar": "Vote",
+  "impostorsKnowEachOther": "🎭 Impostors know each other",
+  "impostorsKnowEachOtherDescription": "Each impostor will see the names of the others",
+  "impostorsKnowEachOtherNeedsTwo": "Only applies with 2 or more impostors",
+  "otherImpostorsTitle": "{count, plural, =1{The other impostor} other{The other impostors}}",
+  "youAreTheOnlyImpostor": "You are the only impostor",
+  "impostorsAdjusted": "Impostors adjusted to {count} for this number of players",
+  "eliminatedCannotVote": "You're eliminated — you no longer vote",
+  "reconnecting": "Reconnecting...",
+  "reconnectingHint": "Lost connection to the host. Your place in the game is being held.",
+  "leaveGame": "Leave the game",
+  "playerRejoined": "{name} has rejoined the game"
 }