Add one-time v17.6.7 classic offer patch workflow

.github/workflows/patch-v1767-classic-offer.yml

@@ -0,0 +1,34 @@
+name: Patch v17.6.7 classic client PDF
+
+on:
+  push:
+    branches:
+      - feature/v17.6.7-classic-offer-pdf
+    paths:
+      - .github/workflows/patch-v1767-classic-offer.yml
+
+permissions:
+  contents: write
+
+jobs:
+  patch:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+      - name: Apply patch
+        run: |
+          node .github/scripts/patch-v1767-classic-offer.mjs
+          node --check public/core/classic-offer-pdf-v1767.js
+          node --check public/app-runtime.js
+          node --check public/core/ux-fixes-v1764.js
+          node --check public/core/performance.js
+      - name: Commit
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git add public package.json package-lock.json docs tests
+          git commit -m "Restore classic client proposal PDF templates" || exit 0
+          git push