Read the newer master source before reconciling concurrent review repairs

Read-only exact-revision snapshot for offline merge validation. No application or master changes. This temporary workflow is removed in the reconciled branch commit.

Author: senegrom

.github/workflows/reconcile-source.yml

@@ -0,0 +1,26 @@
+name: Reconcile source snapshot
+on:
+  push:
+    branches: [fix/review-and-live-acquisition-20260922]
+    paths: [.github/workflows/reconcile-source.yml]
+permissions:
+  contents: read
+jobs:
+  source:
+    runs-on: ubuntu-latest
+    timeout-minutes: 3
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1
+        with:
+          ref: e772b67ccb8f4c25c563f0eaf122ae2b3f13053f
+      - name: Archive exact newer master
+        run: |
+          mkdir snapshot
+          git rev-parse HEAD > snapshot/commit.txt
+          git archive --format=tar HEAD > snapshot/source.tar
+          sha256sum snapshot/source.tar > snapshot/source.sha256
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a
+        with:
+          name: reconcile-source
+          path: snapshot
+          retention-days: 1