feat(webmail): trusted senders on the server, Not spam, and a trust pill in the reader

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

services/webmail/messages/en.json

@@ -321,9 +321,15 @@
     "ccLabel": "Cc",
     "bccLabel": "Bcc",
     "hideImages": "Hide images",
-    "alwaysFromSender": "Always from this sender",
+    "alwaysFromSender": "Trust this sender",
     "forgetSender": "Stop trusting sender",
-    "moveTo": "Move to"
+    "moveTo": "Move to",
+    "notSpam": "Not spam",
+    "junkNotice": "This message is in Spam. Marking it as not spam moves it to the inbox and trusts this sender, so their next messages arrive there too.",
+    "trustSender": "Trust sender",
+    "trustedSender": "Trusted sender",
+    "trustSenderHint": "Never file this sender's mail as spam, and always show their images",
+    "trustedSenderHint": "Not filed as spam, images always shown. Click to stop trusting."
   },
   "settings": {
     "actionDiscard": "Discard",