fix bot DMs vanishing from Direct under lazy member-loading and hide invite in bot control rooms

src/app/features/bots/room.ts

@@ -37,18 +37,25 @@ export const isBotControlRoom = (mx: MatrixClient, room: Room, preset: BotPreset
   if (!ACTIVE_MEMBERSHIPS.has(myMembership)) return false;
 
   const botMember = room.getMember(preset.mxid);
-  if (!botMember) return false;
+  if (
+    !botMember ||
+    botMember.membership === undefined ||
+    !ACTIVE_MEMBERSHIPS.has(botMember.membership)
+  ) {
+    return false;
+  }
 
-  const allowedMembers = new Set([myUserId, preset.mxid]);
-  const activeMembers = room
-    .getMembers()
-    .filter(
-      (member) => member.membership !== undefined && ACTIVE_MEMBERSHIPS.has(member.membership)
-    );
-
-  return (
-    activeMembers.length > 0 && activeMembers.every((member) => allowedMembers.has(member.userId))
-  );
+  // A control DM is exactly the two of us, nobody else. Decide that from the room
+  // SUMMARY counts — NOT room.getMembers(): under Matrix lazy member-loading
+  // getMembers() returns only the members synced so far (heroes + recent senders
+  // + me), so a larger group whose loaded subset happens to be {me, bot} gets
+  // misclassified as the control DM. That bites a chat which began as a 1:1 with
+  // the bot (and still carries the sticky m.direct tag) but later gained people:
+  // it would wrongly drop out of the Direct tab (useDirectRooms excludes control
+  // DMs) and resurface only as a bot DM. getJoinedMemberCount()/
+  // getInvitedMemberCount() come from the sync summary and stay accurate without
+  // loading every member — the same source useAutoDirectSync trusts for its 1:1 test.
+  return room.getJoinedMemberCount() + room.getInvitedMemberCount() === 2;
 };
 
 export const isCatalogBotControlRoom = (

src/app/features/room/RoomViewHeaderDm.tsx

@@ -288,7 +288,7 @@ const RoomMenu = forwardRef<HTMLDivElement, RoomMenuProps>(
               {t('Room.pinned_messages')}
             </Text>
           </MenuItem>
-          {canInvite && (
+          {canInvite && !botControlRoom && (
             <MenuItem
               onClick={handleInvite}
               variant="Primary"