ci(forgejo): generate banlist history graph\n\n- Add scripts/banlist_metrics.py to compute counts from git history and render chart\n- Add Forgejo workflow using demisto/matplotlib image + warm-workspace checkout\n- Keep GitHub workflow for portability; remove old .gitea workflow\n- Update README with embedded SVG and CSV link

.github/workflows/generate-banlist-graph.yml

@@ -0,0 +1,53 @@
+name: Generate banlist history graph
+
+on:
+  push:
+    branches: [ main ]
+    paths:
+      - 'banned.txt'
+      - 'scripts/banlist_metrics.py'
+      - '.github/workflows/generate-banlist-graph.yml'
+  schedule:
+    - cron: '17 3 * * *'
+  workflow_dispatch: {}
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.x'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install matplotlib
+
+      - name: Generate metrics and chart
+        run: |
+          python scripts/banlist_metrics.py \
+            --file banned.txt \
+            --csv metrics/banlist_counts.csv \
+            --image assets/banlist_history.svg
+
+      - name: Commit changes (if any)
+        run: |
+          git config user.name "actions-bot"
+          git config user.email "actions@users.noreply.github.com"
+          if [ -n "$(git status --porcelain -- metrics assets)" ]; then
+            git add metrics assets
+            git commit -m "chore: update banlist history graph [skip ci]"
+            git push
+          else
+            echo "No changes to commit."
+          fi
+