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.

.github/workflows/test_next_server.yml

@@ -13,6 +13,9 @@ on:
 jobs:
   test-next-server:
     runs-on: ubuntu-latest
+    concurrency:
+      group: test-next-server-${{ github.ref }}
+      cancel-in-progress: true
 
     defaults:
       run:
@@ -21,17 +24,12 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
-    - name: Setup Node.js
-      uses: actions/setup-node@v4
-      with:
-        node-version: '20'
-
     - name: Install pnpm
       uses: pnpm/action-setup@v4
       with:
-        version: 8
+        package_json_file: './www/package.json'
 
-    - name: Setup Node.js cache
+    - name: Setup Node.js
       uses: actions/setup-node@v4
       with:
         node-version: '20'
@@ -42,4 +40,4 @@ jobs:
       run: pnpm install
 
     - name: Run tests
-      run: pnpm test
+      run: pnpm test