Run old main Windows core repro

.github/workflows/windows-sideband-old-main-repro.yml

@@ -0,0 +1,50 @@
+name: Windows Sideband Old Main Repro
+
+on:
+  push:
+    branches:
+      - pakrym/repro-old-main-sideband-windows-targeted
+  workflow_dispatch:
+
+concurrency:
+  group: windows-sideband-old-main-repro-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  bazel-windows-cross-core:
+    name: Bazel Windows cross core repro
+    runs-on: windows-latest
+    timeout-minutes: 20
+
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+
+      - name: Prepare Bazel CI
+        uses: ./.github/actions/prepare-bazel-ci
+        with:
+          target: x86_64-pc-windows-gnullvm
+          cache-scope: bazel-windows-sideband-old-main-repro
+          install-test-prereqs: "true"
+
+      - name: Run Bazel Windows cross core tests
+        env:
+          BUILDBUDDY_API_KEY: ${{ secrets.BUILDBUDDY_API_KEY }}
+        shell: bash
+        run: |
+          ./.github/scripts/run-bazel-ci.sh \
+            --print-failed-action-summary \
+            --print-failed-test-logs \
+            --windows-cross-compile \
+            --remote-download-toplevel \
+            -- \
+            test \
+            --nocache_test_results \
+            --test_output=errors \
+            --test_timeout=300 \
+            --test_verbose_timeout_warnings \
+            --build_metadata=COMMIT_SHA=${GITHUB_SHA} \
+            --build_metadata=TAG_repro=old_main_sideband_windows \
+            -- \
+            //codex-rs/core:core-all-test-windows-cross