fix: preserve log message order when replaying history on connect

Send history messages newest-first from the server, tagged with
history=True so the client appends rather than prepends them, avoiding
reverse-chronological display on initial load.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

hbd/server/ws.py

@@ -85,13 +85,15 @@ async def handler(request):
             except Exception as e:
                 logger.error("Error sending initial hosts: %s", e)
 
-        # Send recent messages, filtered to hosts this user may see
+        # Send recent messages newest-first so the client can append them in
+        # display order without reordering on arrival (tagged history=True so
+        # the client knows to append rather than prepend).
         if data.msgs:
             try:
-                for m in data.msgs:
+                for m in reversed(data.msgs):
                     host_name = m.get("host") if isinstance(m, dict) else None
                     if not host_name or _user_can_see_host(user, host_name):
-                        await ws.send_str(json.dumps({"type": "message", "data": m}))
+                        await ws.send_str(json.dumps({"type": "message", "data": m, "history": True}))
             except Exception as e:
                 logger.error("Error sending initial messages: %s", e)