Build all five G15 packages and add native Gitea push CI

.gitea/workflows/debian.yml

@@ -0,0 +1,34 @@
+name: Debian 13 packages
+on:
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    steps:
+      - uses: https://github.com/actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4
+        with:
+          persist-credentials: false
+          submodules: recursive
+      - name: Build, test and rebuild all five sources
+        shell: bash
+        run: |
+          set -euo pipefail
+          for script in packaging/*.sh packaging/overlays/v1/*.sh; do bash -n "$script"; done
+          mkdir -p "$RUNNER_TEMP/debs"
+          bash packaging/run.sh "$RUNNER_TEMP/debs"
+          docker run --rm --mount "type=bind,src=$PWD/packaging,dst=/checks/packaging,readonly" \
+            -w /checks g15-packaging shellcheck packaging/*.sh packaging/overlays/v1/*.sh
+          test -z "$(git submodule foreach --quiet --recursive 'git status --porcelain')"
+      - name: Upload verified binaries and standalone sources
+        uses: https://github.com/actions/upload-artifact@ff15f0306b3f739f7b6fd43fb5d26cd321bd4de5 # v3 (Gitea artifact protocol)
+        with:
+          name: debian13-amd64
+          path: ${{ runner.temp }}/debs/*
+          if-no-files-found: error