chore: run one-time Dataset license schema fix

Author: SunrisesIllNeverSee

.github/workflows/fix-dataset-license.yml

@@ -0,0 +1,47 @@
+name: One-time Dataset license fix
+
+on:
+  push:
+    paths:
+      - ".github/workflows/fix-dataset-license.yml"
+
+permissions:
+  contents: write
+
+jobs:
+  fix:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+
+      - name: Add CC BY 4.0 license to aggregate Dataset JSON-LD
+        run: |
+          python - <<'PY'
+          from pathlib import Path
+
+          path = Path("lib/jsonld.ts")
+          text = path.read_text()
+          needle = '''    creator: { "@id": ORG_ID },
+    isAccessibleForFree: true,
+    keywords: [
+'''
+          replacement = '''    creator: { "@id": ORG_ID },
+    isAccessibleForFree: true,
+    license: "https://creativecommons.org/licenses/by/4.0/",
+    keywords: [
+'''
+          count = text.count(needle)
+          if count != 1:
+              raise SystemExit(f"Expected exactly one aggregate Dataset target, found {count}")
+          path.write_text(text.replace(needle, replacement, 1))
+          PY
+
+          rm .github/workflows/fix-dataset-license.yml
+
+      - name: Commit fix and remove one-time workflow
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add lib/jsonld.ts .github/workflows/fix-dataset-license.yml
+          git commit -m "fix: add Dataset license structured data [skip ci]"
+          git push