chore(ci): bootstrap CI + hooks

Squash-merge bootstrap-cicd into integration

.gitea/workflows/release.yml

@@ -0,0 +1,29 @@
+name: Release
+
+on:
+  push:
+    branches: ["main"]
+
+jobs:
+  tag-and-notes:
+    runs-on: docker
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Build CI image
+        run: docker build -f ci.Dockerfile -t local/ci:latest .
+
+      - name: Compute tag
+        id: tag
+        run: |
+          TZ=UTC date +"v%Y.%m.%d-%H%M" > tag.txt
+          echo "tag=$(cat tag.txt)" >> $GITHUB_OUTPUT
+
+      - name: Create annotated tag
+        run: |
+          git config user.name "ci"
+          git config user.email "ci@local"
+          git tag -a ${{ steps.tag.outputs.tag }} -m "Release ${{ steps.tag.outputs.tag }}"
+          git push origin ${{ steps.tag.outputs.tag }}
+