feat: Implement real-time message delivery for conversations via WebSocket integration and update admin seed email.

src/messages/messages.gateway.ts

@@ -175,13 +175,8 @@ export class MessagesGateway implements OnGatewayConnection, OnGatewayDisconnect
         data.message,
       );
 
-      // Broadcast to other clients in the conversation room (exclude sender)
-      client
-        .to(`conversation:${data.conversationId}`)
-        .emit('new_message', message);
-
-      // Also send directly to the other participant's socket(s)
-      // so they receive the message even if they haven't joined this room
+      // Send directly to the other participant's socket(s)
+      // This is the primary delivery mechanism — works even if they haven't joined the room
       try {
         const participants = await this.messagesService.getConversationParticipants(data.conversationId);
         if (participants) {
@@ -194,6 +189,12 @@ export class MessagesGateway implements OnGatewayConnection, OnGatewayDisconnect
         this.logger.warn(`Failed to get participants for direct delivery in ${data.conversationId}: ${participantError.message}`);
       }
 
+      // Also broadcast to the conversation room as a fallback
+      // (client.to excludes sender; recipients dedup by message ID)
+      client
+        .to(`conversation:${data.conversationId}`)
+        .emit('new_message', message);
+
       return { success: true, message };
     } catch (error) {
       return { error: error.message };