Publish rolling Experimental builds from main and support updater discovery

.github/workflows/release.yml

@@ -1,39 +1,72 @@
 name: Windows release
 on:
+  push:
+    branches: [main]
   release:
     types: [published]
   workflow_dispatch:
 permissions:
-  contents: write
+  contents: read
 jobs:
   windows:
+    if: github.event_name != 'release' || github.event.release.tag_name != 'experimental'
     runs-on: windows-2025
+    timeout-minutes: 90
+    concurrency:
+      group: windows-build-${{ github.event_name == 'release' && github.event.release.tag_name || github.ref }}
+      cancel-in-progress: true
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
       - uses: actions/setup-python@v5
         with:
           python-version: '3.13'
-      - name: Install setup packager
-        run: python -m pip install pyinstaller==6.19.0 numpy==2.2.6 Pillow==11.3.0
-      - name: Check updater without starting game
+          cache: pip
+          cache-dependency-path: tools/requirements-setup.txt
+      - uses: Swatinem/rust-cache@v2
+        with:
+          shared-key: windows-release
+          cache-on-failure: true
+      - name: Check updater and publisher without starting game
+        run: python -m unittest discover -s tools -p "test_*release*.py" -v
+      - name: Check updater protocol
         run: python -m unittest discover -s tools -p test_updater.py -v
       - name: Build Windows package
         shell: pwsh
         env:
-          RELEASE_TAG: ${{ github.event.release.tag_name }}
+          RELEASE_TAG: ${{ github.event_name == 'release' && github.event.release.tag_name || 'experimental' }}
         run: ./scripts/Build-Release.ps1
       - uses: actions/upload-artifact@v4
         with:
           name: skate3rust-windows-x64
+          retention-days: 7
           path: |
             target/skate3rust-windows-x64.zip
             target/skate3rust-windows-x64.zip.sha256
             target/release.json
-      - name: Attach to release
+  publish:
+    needs: windows
+    if: github.event_name == 'release' || github.ref == 'refs/heads/main'
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    concurrency:
+      group: windows-release-publish
+      cancel-in-progress: false
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/download-artifact@v4
+        with:
+          name: skate3rust-windows-x64
+          path: target
+      - name: Publish rolling experimental
+        if: github.event_name != 'release'
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: python tools/publish_experimental.py --directory target
+      - name: Attach numbered release
         if: github.event_name == 'release'
-        shell: pwsh
         env:
           GH_TOKEN: ${{ github.token }}
           RELEASE_TAG: ${{ github.event.release.tag_name }}
-        run: gh release upload "$env:RELEASE_TAG" target/skate3rust-windows-x64.zip target/skate3rust-windows-x64.zip.sha256 target/release.json --clobber
+        run: gh release upload "$RELEASE_TAG" target/skate3rust-windows-x64.zip target/skate3rust-windows-x64.zip.sha256 target/release.json --clobber