feat: filter online users to only those active in last 3 minutes and sort by nick

The `get_recent_users` query in `channel.py` now includes a `WHERE` clause filtering `user.last_ping` to within the last 3 minutes, replacing the previous unfiltered `get_online_users` call. The `rpc.py` handler removes manual deletion of sensitive fields (`email`, `password`, `deleted_at`, `updated_at`) and adds sorting of results by the `nick` key.

src/snek/service/channel.py

@@ -68,7 +68,7 @@ class ChannelService(BaseService):
         return channel
 
     async def get_recent_users(self, channel_uid):
-        async for user in self.query("SELECT user.uid, user.username,user.color,user.last_ping,user.nick FROM channel_member INNER JOIN user ON user.uid = channel_member.user_uid WHERE channel_uid=:channel_uid ORDER BY last_ping DESC LIMIT 30", {"channel_uid": channel_uid}):
+        async for user in self.query("SELECT user.uid, user.username,user.color,user.last_ping,user.nick FROM channel_member INNER JOIN user ON user.uid = channel_member.user_uid WHERE channel_uid=:channel_uid AND user.last_ping >= datetime('now', '-3 minutes') ORDER BY last_ping DESC LIMIT 30", {"channel_uid": channel_uid}):
             yield user
 
     async def get_users(self, channel_uid):

src/snek/view/rpc.py

@@ -314,13 +314,9 @@ class RPCView(BaseView):
             self._require_login()
 
             results = [
-                    record.record async for record  in self.services.channel.get_online_users(channel_uid)
+                    record async for record  in self.services.channel.get_recent_users(channel_uid)
             ]
-            for result in results:
-                del result['email']
-                del result['password']
-                del result['deleted_at']
-                del result['updated_at']
+            sorted(results, key=lambda x: x["nick"])
             return results
 
         async def echo(self, obj):