Fix chat visibility and conversation sync

src/web/routes/conversations.ts

@@ -273,11 +273,18 @@ export function createConversationsRouter(ctx: WebContext): Router {
         }
         ctx.activity.push('sent', `Sent chat reply to u/${conversation.username}`, conversation.username);
         ctx.broadcaster.push('info', `Chat reply sent to u/${conversation.username}`);
+        try {
+          // Wait for Matrix /sync to merge the sent event into the cached
+          // message history. The dashboard invalidates its queries when this
+          // request completes, so returning earlier can immediately re-read
+          // the stale pre-send conversation.
+          await ctx.services.chat.refreshTopChats(5);
+        } catch (err) {
+          // Delivery is already confirmed by Matrix's send response. A sync
+          // failure must not turn a successful send into a reported failure.
+          ctx.logger.error('Failed to refresh chats after send-reply:', err);
+        }
         res.json({ success: true });
-
-        ctx.services.chat.refreshTopChats(5).catch((err) =>
-          ctx.logger.error('Failed to refresh chats after send-reply:', err),
-        );
       } else {
         res.status(500).json({ error: 'Failed to send chat message' });
       }