Open DMs during sync catch-up instead of blocking on parent maps.

Prefer the direct route for m.direct rooms and allow joined space children before roomToParents finishes backfilling.

src/app/pages/client/space/RoomProvider.tsx

@@ -1,4 +1,4 @@
-import React, { ReactNode } from 'react';
+import React, { ReactNode, useEffect } from 'react';
 import { useParams } from 'react-router-dom';
 import { useAtom, useAtomValue } from 'jotai';
 import { decodeRouteParam } from '../../pathUtils';
@@ -30,7 +30,31 @@ export function SpaceRouteRoomProvider({ children }: { children: ReactNode }) {
   const roomId = useSelectedRoom();
   const room = mx.getRoom(roomId);
 
-  if (!room || !allRooms.includes(room.roomId)) {
+  const isJoined = Boolean(room && allRooms.includes(room.roomId));
+  const isSpaceChild = Boolean(room && getSpaceChildren(space).includes(room.roomId));
+  const hasParentMapping = Boolean(
+    room && getAllParents(roomToParents, room.roomId).has(space.roomId)
+  );
+
+  // roomToParents can lag behind live space state during catch-up sync.
+  // If the room is clearly a child of this space, backfill the map and open it.
+  useEffect(() => {
+    if (!room || !isJoined || hasParentMapping || !isSpaceChild) return;
+    setRoomToParents({
+      type: 'PUT',
+      parent: space.roomId,
+      children: [room.roomId],
+    });
+  }, [
+    room,
+    isJoined,
+    hasParentMapping,
+    isSpaceChild,
+    space.roomId,
+    setRoomToParents,
+  ]);
+
+  if (!room || !isJoined) {
     // room is not joined
     return (
       <JoinBeforeNavigate
@@ -50,16 +74,7 @@ export function SpaceRouteRoomProvider({ children }: { children: ReactNode }) {
     );
   }
 
-  if (!getAllParents(roomToParents, room.roomId).has(space.roomId)) {
-    if (getSpaceChildren(space).includes(room.roomId)) {
-      // fill missing roomToParent mapping
-      setRoomToParents({
-        type: 'PUT',
-        parent: space.roomId,
-        children: [room.roomId],
-      });
-    }
-
+  if (!hasParentMapping && !isSpaceChild) {
     return (
       <JoinBeforeNavigate
         roomIdOrAlias={roomIdOrAlias ?? rawRoomIdOrAlias!}