feat: calendar invitations RSVP, trust assessment, file preview

locales/en/common.json

@@ -292,6 +292,12 @@
     "calendar_invitation": {
       "loading": "Loading event details…",
       "title": "Calendar Invitation",
+      "published_title": "Published Event",
+      "response_title": "Event Response",
+      "update_title": "Event Update",
+      "counter_title": "Counter Proposal",
+      "refresh_title": "Refresh Request",
+      "declined_counter_title": "Counter Proposal Declined",
       "cancelled_title": "Event Cancelled",
       "organizer": "Organized by {name}",
       "attendees": "{count, plural, one {# attendee} other {# attendees}}",
@@ -302,9 +308,54 @@
       "added": "Added to calendar",
       "rsvp_sent": "Response sent",
       "parse_error": "Could not read invitation",
+      "action_failed": "Could not complete that calendar action.",
       "no_calendar": "Calendar not available",
+      "published_info": "This event was shared for reference.",
+      "response_info": "This message contains an attendee response.",
+      "response_info_organizer": "This attendee response updates your event.",
+      "update_info": "This message updates an existing event.",
+      "counter_info": "This message proposes changes to an event.",
+      "counter_info_organizer": "This attendee proposed changes to your event.",
+      "refresh_info": "This message requests the latest event details.",
+      "refresh_info_organizer": "An attendee requested the latest event details.",
+      "declined_counter_info": "The organizer declined a counter proposal.",
+      "authentication_failed_info": "Mail authentication checks for this invitation failed. Treat calendar actions with caution.",
+      "authentication_missing_info": "This invitation does not include verified mail authentication. Confirm the details with the organizer if anything looks unusual.",
+      "sender_mismatch_info": "This invitation was sent from {sender}, while the organizer listed in the calendar data is {organizer}.",
+      "sender_mismatch_unverified_info": "This invitation was sent from {sender}, while the organizer listed in the calendar data is {organizer}, and the message could not be verified.",
+      "organizer_role": "You organize this event",
+      "your_response": "Your response: {status}",
+      "response_needed": "Needs response",
+      "response_accepted": "Accepted",
+      "response_tentative": "Tentative",
+      "response_declined": "Declined",
+      "response_delegated": "Delegated",
+      "actor_sent_info": "Sent by {name}.",
+      "actor_response_info": "{name} responded {status}.",
+      "actor_counter_info": "{name} proposed changes to this event.",
+      "actor_refresh_info": "{name} asked for the latest event details.",
+      "actor_declined_counter_info": "{name} declined the counter proposal.",
+      "actor_note": "Note: {comment}",
+      "actor_unknown": "Someone",
+      "proposed_changes": "Proposed changes",
+      "change_title": "Title",
+      "change_time": "Time",
+      "change_location": "Location",
+      "change_description": "Description",
+      "change_empty": "None",
+      "change_from_to": "{before} -> {after}",
+      "apply_proposal": "Apply proposed changes",
+      "proposal_applied": "Proposed changes applied.",
+      "review_proposal": "Review proposal",
+      "review_request": "Review request",
+      "view_in_calendar": "View in calendar",
       "select_calendar": "Select calendar",
-      "already_in_calendar": "Already in your calendar"
+      "already_in_calendar": "Already in your calendar",
+      "request_info": "You've been invited to this event. Respond to let the organizer know your availability.",
+      "cancel_info": "The organizer has cancelled this event.",
+      "event_updated": "Update #{sequence}",
+      "event_status_tentative": "Tentative",
+      "event_status_cancelled": "Cancelled"
     },
     "send": "Send"
   },
@@ -627,6 +678,12 @@
         "label": "Show Preview Text",
         "description": "Display email preview in the list"
       },
+      "attachment_click_action": {
+        "label": "Attachment Click Action",
+        "description": "Choose whether clicking a file attachment previews it or downloads it immediately",
+        "preview": "Preview when possible",
+        "download": "Download immediately"
+      },
       "emails_per_page": {
         "25": "25 emails",
         "50": "50 emails",
@@ -1654,7 +1711,9 @@
       "notifications_enabled": "Event notifications",
       "notifications_enabled_desc": "Show alerts for upcoming calendar events",
       "notification_sound": "Notification sound",
-      "notification_sound_desc": "Play a sound for calendar alerts"
+      "notification_sound_desc": "Play a sound for calendar alerts",
+      "invitation_parsing": "Parse email invitations",
+      "invitation_parsing_desc": "Detect calendar invitations in email attachments and show calendar actions"
     },
     "days": {
       "monday": "Monday",