fix: account isolation, auto-import signer certs, and no-key error handling #35

locales/de/common.json

@@ -477,7 +477,7 @@
     "smime_sign_off": "S/MIME-Signatur deaktiviert",
     "smime_encrypt_on": "S/MIME-Verschlüsselung aktiviert",
     "smime_encrypt_off": "S/MIME-Verschlüsselung deaktiviert",
-    "smime_encrypt_unavailable": "S/MIME-Verschlüsselung nicht möglich: {reason}",
+    "smime_encrypt_unavailable": "S/MIME-Verschlüsselung nicht möglich – fehlende Empfängerzertifikate",
     "smime_unlock_title": "S/MIME-Schlüssel entsperren",
     "smime_unlock_message": "Geben Sie die Passphrase ein, um Ihren S/MIME-Schlüssel zu entsperren.",
     "smime_unlock_button": "Entsperren",

locales/es/common.json

@@ -477,7 +477,7 @@
     "smime_sign_off": "Firma S/MIME desactivada",
     "smime_encrypt_on": "Cifrado S/MIME activado",
     "smime_encrypt_off": "Cifrado S/MIME desactivado",
-    "smime_encrypt_unavailable": "El cifrado S/MIME no está disponible: {reason}",
+    "smime_encrypt_unavailable": "Cifrado S/MIME no disponible – faltan certificados de destinatario",
     "smime_unlock_title": "Desbloquear clave S/MIME",
     "smime_unlock_message": "Introduce la contraseña para desbloquear tu clave S/MIME.",
     "smime_unlock_button": "Desbloquear",

locales/fr/common.json

@@ -477,7 +477,7 @@
     "smime_sign_off": "Signature S/MIME désactivée",
     "smime_encrypt_on": "Chiffrement S/MIME activé",
     "smime_encrypt_off": "Chiffrement S/MIME désactivé",
-    "smime_encrypt_unavailable": "Le chiffrement S/MIME n'est pas disponible : {reason}",
+    "smime_encrypt_unavailable": "Chiffrement S/MIME indisponible – certificats des destinataires manquants",
     "smime_unlock_title": "Déverrouiller la clé S/MIME",
     "smime_unlock_message": "Entrez la phrase secrète pour déverrouiller votre clé S/MIME.",
     "smime_unlock_button": "Déverrouiller",

locales/it/common.json

@@ -477,7 +477,7 @@
     "smime_sign_off": "Firma S/MIME disattivata",
     "smime_encrypt_on": "Cifratura S/MIME attivata",
     "smime_encrypt_off": "Cifratura S/MIME disattivata",
-    "smime_encrypt_unavailable": "La cifratura S/MIME non è disponibile: {reason}",
+    "smime_encrypt_unavailable": "Cifratura S/MIME non disponibile – certificati destinatario mancanti",
     "smime_unlock_title": "Sblocca chiave S/MIME",
     "smime_unlock_message": "Inserisci la passphrase per sbloccare la tua chiave S/MIME.",
     "smime_unlock_button": "Sblocca",

locales/ja/common.json

@@ -477,7 +477,7 @@
     "smime_sign_off": "S/MIME 署名を無効化しました",
     "smime_encrypt_on": "S/MIME 暗号化を有効化しました",
     "smime_encrypt_off": "S/MIME 暗号化を無効化しました",
-    "smime_encrypt_unavailable": "S/MIME 暗号化は利用できません: {reason}",
+    "smime_encrypt_unavailable": "S/MIME 暗号化は利用できません – 受信者の証明書がありません",
     "smime_unlock_title": "S/MIME 鍵のロックを解除",
     "smime_unlock_message": "S/MIME 鍵を解除するためのパスフレーズを入力してください。",
     "smime_unlock_button": "ロック解除",

locales/nl/common.json

@@ -477,7 +477,7 @@
     "smime_sign_off": "S/MIME-ondertekening uitgeschakeld",
     "smime_encrypt_on": "S/MIME-versleuteling ingeschakeld",
     "smime_encrypt_off": "S/MIME-versleuteling uitgeschakeld",
-    "smime_encrypt_unavailable": "S/MIME-versleuteling is niet beschikbaar: {reason}",
+    "smime_encrypt_unavailable": "S/MIME-versleuteling niet beschikbaar – ontbrekende ontvangercertificaten",
     "smime_unlock_title": "S/MIME-sleutel ontgrendelen",
     "smime_unlock_message": "Voer de wachtwoordzin in om uw S/MIME-sleutel te ontgrendelen.",
     "smime_unlock_button": "Ontgrendelen",

locales/pt/common.json

@@ -477,7 +477,7 @@
     "smime_sign_off": "Assinatura S/MIME desativada",
     "smime_encrypt_on": "Criptografia S/MIME ativada",
     "smime_encrypt_off": "Criptografia S/MIME desativada",
-    "smime_encrypt_unavailable": "A criptografia S/MIME não está disponível: {reason}",
+    "smime_encrypt_unavailable": "Criptografia S/MIME indisponível – certificados de destinatário ausentes",
     "smime_unlock_title": "Desbloquear chave S/MIME",
     "smime_unlock_message": "Insira a frase secreta para desbloquear sua chave S/MIME.",
     "smime_unlock_button": "Desbloquear",