Add nightly lodge HA config backup workflow (exports to dfritz/home-assistant lodge/)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.gitea/workflows/backup-ha.yaml

@@ -0,0 +1,50 @@
+name: backup-lodge-ha
+# Nightly export of the lodge HA config (scripts/automations/dashboards/helpers)
+# into dfritz/home-assistant lodge/. Secrets: HA_TOKEN (lodge HA long-lived
+# token), GIT_TOKEN (ops PAT with write:repository). Lives in this repo because
+# ops has admin here; move to dfritz/home-assistant if its owner adds the
+# HA_TOKEN secret there.
+on:
+  schedule:
+    - cron: '37 9 * * *'   # 04:37 America/Chicago during CDT (03:37 CST)
+  workflow_dispatch: {}
+  push:
+    branches: [main]
+    paths: ['.gitea/workflows/backup-ha.yaml']
+
+jobs:
+  backup:
+    runs-on: fritzlab
+    timeout-minutes: 15
+    steps:
+      - name: clone mirror repo
+        run: git clone "https://ops:${{ secrets.GIT_TOKEN }}@code.fritzlab.net/dfritz/home-assistant.git" mirror
+
+      - name: install python deps
+        run: pip install --break-system-packages --quiet websockets pyyaml
+
+      - name: export lodge HA config
+        working-directory: mirror
+        env:
+          HA_TOKEN: ${{ secrets.HA_TOKEN }}
+        run: |
+          rm -rf lodge/scripts lodge/automations lodge/dashboards
+          python3 lodge/export.py
+
+      - name: commit and push if changed
+        working-directory: mirror
+        run: |
+          git config user.name "lodge-ha-backup"
+          git config user.email "ops@fritzlab.net"
+          git add lodge/
+          if git diff --cached --quiet; then echo "no changes"; exit 0; fi
+          git commit -m "lodge: automated HA config export"
+          git push
+
+      - name: notify on failure
+        if: failure()
+        uses: https://code.fritzlab.net/action/notify-email@v1
+        with:
+          status: failure
+          summary: "Lodge HA config backup failed"
+          auto-log: 'true'