fix(i18n): strip remaining 4 emojis from user-visible translations

- en/es ai.json image-prompt title: dropped 🖼️
- en/es auth.json magic-link email subject: dropped 🪄

Keeps terminal-style glyphs (✓ ✗ ▶ ⏸) — those are UI semantics,
not emoji decoration.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

packages/i18n/src/translations/en/auth.json

@@ -236,7 +236,7 @@
       },
       "email": {
         "preview": "Login to claudemesh with a magic link",
-        "subject": "Your magic link 🪄",
+        "subject": "Your magic link",
         "body": "Almost in! Click the button below to login.",
         "or": "Or, copy and paste this link into your browser:",
         "cta": "Login with magic link",

packages/i18n/src/translations/es/auth.json

@@ -230,7 +230,7 @@
       },
       "email": {
         "preview": "Inicia sesión con enlace mágico",
-        "subject": "Tu enlace mágico 🪄",
+        "subject": "Tu enlace mágico",
         "body": "¡Casi ahí! Haz clic abajo para iniciar sesión.",
         "or": "O copia y pega este enlace en tu navegador:",
         "cta": "Iniciar sesión con enlace mágico",