probe: run the slow specs against the 2026-03-21 bizinikiwi image

.github/workflows/slow-probe.yml

@@ -0,0 +1,25 @@
+name: slow specs probe
+on:
+  push:
+    branches: [slow-specs-probe]
+jobs:
+  slow:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 'lts/*'
+      - name: start dev node
+        run: |
+          docker run -d --name node -p 30333:9944 pezkuwi/bizinikiwi@sha256:130e8ddd1ec36b00422fcfe565fb596d6a81889e3aeb5f45d13bd92993d09a19 --dev --rpc-external --rpc-cors all
+          for i in $(seq 1 60); do
+            curl -sf -H 'Content-Type: application/json' -d '{"id":1,"jsonrpc":"2.0","method":"system_version"}' http://127.0.0.1:30333 && break
+            sleep 2
+          done
+          echo; docker logs node 2>&1 | tail -5
+      - run: corepack enable && yarn install --immutable
+      - run: yarn test:one .slow.
+      - if: always()
+        run: docker logs node 2>&1 | tail -40