fix(localization): normalize em dash formatting in batch A locales

Use literal spaced em dash ( — ) consistent with other locale files
instead of unspaced \u2014 escape sequence.

Assisted-by: claude-sonnet-4-6 via Claude Code
Signed-off-by: Xe Iaso <me@xeiaso.net>

lib/localization/locales/cs.json

@@ -53,7 +53,7 @@
   "js_missing_feature": "Chybějící funkce",
   "js_challenge_error": "Chyba výzvy!",
   "js_challenge_error_msg": "Nepodařilo se vyřešit kontrolní algoritmus. Možná budete chtít obnovit stránku.",
-  "js_calculating_difficulty": "Počítám...\u2014Obtížnost:",
+  "js_calculating_difficulty": "Počítám... — Obtížnost:",
   "js_speed": "Rychlost:",
   "js_verification_longer": "Ověřování trvá déle, než se očekávalo. Prosím neobnovujte stránku.",
   "js_success": "Úspěch!",

lib/localization/locales/en.json

@@ -54,7 +54,7 @@
   "js_missing_feature": "Missing feature",
   "js_challenge_error": "Challenge error!",
   "js_challenge_error_msg": "Failed to resolve check algorithm. You may want to reload the page.",
-  "js_calculating_difficulty": "Calculating...\u2014Difficulty:",
+  "js_calculating_difficulty": "Calculating... — Difficulty:",
   "js_speed": "Speed:",
   "js_verification_longer": "Verification is taking longer than expected. Please do not refresh the page.",
   "js_success": "Success!",

lib/localization/locales/es.json

@@ -52,7 +52,7 @@
   "js_missing_feature": "Característica faltante",
   "js_challenge_error": "¡Error de desafío!",
   "js_challenge_error_msg": "Falló al resolver el algoritmo de verificación. Puedes intentar recargar la página.",
-  "js_calculating_difficulty": "Calculando...\u2014Dificultad:",
+  "js_calculating_difficulty": "Calculando... — Dificultad:",
   "js_speed": "Velocidad:",
   "js_verification_longer": "La verificación está tomando más tiempo del esperado. Por favor no actualices la página.",
   "js_success": "¡Éxito!",

lib/localization/locales/et.json

@@ -52,7 +52,7 @@
   "js_missing_feature": "Puuduv brauseri omadus",
   "js_challenge_error": "Kontrolli viga!",
   "js_challenge_error_msg": "Ei suutnud tuvastada kontrollalgoritmi. Võiksid proovida lehe uuesti laadida.",
-  "js_calculating_difficulty": "Arvutan...\u2014Raskus:",
+  "js_calculating_difficulty": "Arvutan... — Raskus:",
   "js_speed": "Kiirus:",
   "js_verification_longer": "Kontrollimine võtab kauem kui tavaliselt. Palun ära lae lehte uuesti.",
   "js_success": "Õnnestus!",

lib/localization/locales/fi.json

@@ -52,7 +52,7 @@
   "js_missing_feature": "Puuttuva ominaisuus",
   "js_challenge_error": "Haastevirhe!",
   "js_challenge_error_msg": "Tarkistuskaavaa ei voitu ratkaista. Voit yrittää ladata sivua uudelleen.",
-  "js_calculating_difficulty": "Lasketaan...\u2014Vaikeus:",
+  "js_calculating_difficulty": "Lasketaan... — Vaikeus:",
   "js_speed": "Nopeus:",
   "js_verification_longer": "Vahvistus kestää odotettua pitempään. Ethän lataa sivua uudelleen.",
   "js_success": "Onnistui!",

lib/localization/locales/fil.json

@@ -52,7 +52,7 @@
   "js_missing_feature": "Nawawalang feature",
   "js_challenge_error": "Error sa hamon!",
   "js_challenge_error_msg": "Nabigong iresolba ang algoritmo ng pagsusuri. Baka gusto mong i-reload ang pahina.",
-  "js_calculating_difficulty": "Kinakalkula...\u2014Kahirapan:",
+  "js_calculating_difficulty": "Kinakalkula... — Kahirapan:",
   "js_speed": "Bilis:",
   "js_verification_longer": "Mas tumatagal ang pag-verify kaysa sa inaasahan. Mangyaring huwag i-refresh ang pahina.",
   "js_success": "Matagumpay!",