fix: links in chat could not be opened (#8544)

Signed-off-by: Matt Toohey <contact@matttoohey.com>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ui/goose2/src/shared/i18n/locales/en/common.json

@@ -45,6 +45,13 @@
       "title": "Environment Variables",
       "toggleVisibility": "Toggle value visibility"
     },
+    "linkSafety": {
+      "copied": "Copied!",
+      "copyLink": "Copy link",
+      "description": "You're about to visit an external website.",
+      "openLink": "Open link",
+      "title": "Open external link?"
+    },
     "messageBranch": {
       "next": "Next branch",
       "page": "{{current}} of {{total}}",

ui/goose2/src/shared/i18n/locales/es/common.json

@@ -40,6 +40,13 @@
     "codeBlock": {
       "copyLabel": "Copiar código"
     },
+    "linkSafety": {
+      "copied": "¡Copiado!",
+      "copyLink": "Copiar enlace",
+      "description": "Estás a punto de visitar un sitio web externo.",
+      "openLink": "Abrir enlace",
+      "title": "¿Abrir enlace externo?"
+    },
     "environmentVariables": {
       "copyLabel": "Copiar variable de entorno",
       "title": "Variables de entorno",