fix: batch room meeting status queries via prop-drilling

Alternative to the batcher approach (#848): parent fetches all room
meeting statuses in a single bulk POST and passes data down as props.
No extra dependency (@yornaath/batshit), no implicit batching magic.

Backend: POST /v1/rooms/meetings/bulk-status + bulk DB methods.
Frontend: useRoomsBulkMeetingStatus hook in RoomList, MeetingStatus
receives data as props instead of calling per-room hooks.
CI: fix pnpm 8→10 auto-detect, add concurrency group.
Tests: Jest+jsdom+testing-library for bulk hook.

www/app/(app)/rooms/_components/RoomList.tsx

@@ -1,5 +1,10 @@
+import { useMemo } from "react";
 import { Box, Heading, Text, VStack } from "@chakra-ui/react";
 import type { components } from "../../../reflector-api";
+import {
+  useRoomsBulkMeetingStatus,
+  BulkMeetingStatusMap,
+} from "../../../lib/apiHooks";
 
 type Room = components["schemas"]["Room"];
 import { RoomTable } from "./RoomTable";
@@ -31,6 +36,10 @@ export function RoomList({
   pt,
   loading,
 }: RoomListProps) {
+  const roomNames = useMemo(() => rooms.map((r) => r.name), [rooms]);
+  const bulkStatusQuery = useRoomsBulkMeetingStatus(roomNames);
+  const meetingStatusMap: BulkMeetingStatusMap = bulkStatusQuery.data ?? {};
+
   return (
     <VStack alignItems="start" gap={4} mb={mb} pt={pt}>
       <Heading size="md">{title}</Heading>
@@ -43,6 +52,8 @@ export function RoomList({
             onEdit={onEdit}
             onDelete={onDelete}
             loading={loading}
+            meetingStatusMap={meetingStatusMap}
+            meetingStatusLoading={bulkStatusQuery.isLoading}
           />
           <RoomCards
             rooms={rooms}

www/app/(app)/rooms/_components/RoomTable.tsx

@@ -14,11 +14,7 @@ import {
 import { LuLink, LuRefreshCw } from "react-icons/lu";
 import { FaCalendarAlt } from "react-icons/fa";
 import type { components } from "../../../reflector-api";
-import {
-  useRoomActiveMeetings,
-  useRoomUpcomingMeetings,
-  useRoomIcsSync,
-} from "../../../lib/apiHooks";
+import { useRoomIcsSync, BulkMeetingStatusMap } from "../../../lib/apiHooks";
 
 type Room = components["schemas"]["Room"];
 type Meeting = components["schemas"]["Meeting"];
@@ -62,6 +58,8 @@ interface RoomTableProps {
   onEdit: (roomId: string, roomData: any) => void;
   onDelete: (roomId: string) => void;
   loading?: boolean;
+  meetingStatusMap: BulkMeetingStatusMap;
+  meetingStatusLoading: boolean;
 }
 
 const getRoomModeDisplay = (mode: string): string => {
@@ -104,14 +102,16 @@ const getZulipDisplay = (
   return "Enabled";
 };
 
-function MeetingStatus({ roomName }: { roomName: string }) {
-  const activeMeetingsQuery = useRoomActiveMeetings(roomName);
-  const upcomingMeetingsQuery = useRoomUpcomingMeetings(roomName);
-
-  const activeMeetings = activeMeetingsQuery.data || [];
-  const upcomingMeetings = upcomingMeetingsQuery.data || [];
-
-  if (activeMeetingsQuery.isLoading || upcomingMeetingsQuery.isLoading) {
+function MeetingStatus({
+  activeMeetings,
+  upcomingMeetings,
+  isLoading,
+}: {
+  activeMeetings: Meeting[];
+  upcomingMeetings: CalendarEventResponse[];
+  isLoading: boolean;
+}) {
+  if (isLoading) {
     return <Spinner size="sm" />;
   }
 
@@ -176,6 +176,8 @@ export function RoomTable({
   onEdit,
   onDelete,
   loading,
+  meetingStatusMap,
+  meetingStatusLoading,
 }: RoomTableProps) {
   const [syncingRooms, setSyncingRooms] = useState<Set<NonEmptyString>>(
     new Set(),
@@ -252,7 +254,15 @@ export function RoomTable({
                   <Link href={`/${room.name}`}>{room.name}</Link>
                 </Table.Cell>
                 <Table.Cell>
-                  <MeetingStatus roomName={room.name} />
+                  <MeetingStatus
+                    activeMeetings={
+                      meetingStatusMap[room.name]?.active_meetings ?? []
+                    }
+                    upcomingMeetings={
+                      meetingStatusMap[room.name]?.upcoming_events ?? []
+                    }
+                    isLoading={meetingStatusLoading}
+                  />
                 </Table.Cell>
                 <Table.Cell>
                   {getZulipDisplay(