Audit forced grid-split PMTiles families

.github/workflows/audit-forced-split-regions.yml

@@ -0,0 +1,85 @@
+name: Audit Forced Grid-Split Regions
+
+on:
+  push:
+    branches:
+      - audit/identify-forced-split-regions
+    paths-ignore:
+      - audit/forced-split-regions.json
+      - audit/forced-split-regions.md
+      - audit/world-plan.json
+      - audit/published-split-assets.json
+      - audit/published-split-assets.md
+  pull_request:
+    branches:
+      - main
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+jobs:
+  audit:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: audit/identify-forced-split-regions
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 24
+
+      - name: Generate current size-aware world plan
+        run: |
+          mkdir -p audit
+          node scripts/plan-world-shards.mjs --scope all > audit/world-plan.json
+
+      - name: Identify forced grid-split families in current plan
+        run: |
+          node scripts/report-forced-split-regions.mjs \
+            audit/world-plan.json \
+            audit/forced-split-regions.json \
+            audit/forced-split-regions.md
+          cat audit/forced-split-regions.md
+
+      - name: Identify split families actually published in release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          node scripts/report-published-split-assets.mjs \
+            "$GITHUB_REPOSITORY" \
+            occumed-world-v1 \
+            audit/published-split-assets.json \
+            audit/published-split-assets.md
+          cat audit/published-split-assets.md
+
+      - name: Commit audit results
+        if: github.event_name == 'push' || github.event_name == 'workflow_dispatch'
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git add \
+            audit/world-plan.json \
+            audit/forced-split-regions.json \
+            audit/forced-split-regions.md \
+            audit/published-split-assets.json \
+            audit/published-split-assets.md
+          if git diff --cached --quiet; then
+            echo "Audit results unchanged."
+          else
+            git commit -m "Record forced split region audit"
+            git push origin HEAD:audit/identify-forced-split-regions
+          fi
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: forced-split-region-audit
+          path: |
+            audit/forced-split-regions.json
+            audit/forced-split-regions.md
+            audit/world-plan.json
+            audit/published-split-assets.json
+            audit/published-split-assets.md
+          retention-days: 30