Update viz preview on branch commits

Author: adewale

.github/workflows/preview-viz.yml

@@ -0,0 +1,37 @@
+name: Preview viz
+
+on:
+  push:
+    branches:
+      - claude/tuftean-marginalia-viz-TB0fw
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: preview-viz
+  cancel-in-progress: true
+
+jobs:
+  upload-preview:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: astral-sh/setup-uv@v5
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.13'
+      - name: Install dependencies
+        run: uv sync --all-groups
+      - name: Build generated assets
+        run: make build
+      - name: Upload Cloudflare Preview
+        env:
+          CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+          CLOUDFLARE_ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
+        run: |
+          uv run pywrangler preview \
+            --name viz \
+            --message "${{ github.sha }}" \
+            --json