Target auto-release at the current repo

The packaging workflow pushed alpha releases to noDRM/DeDRM_tools_autorelease
using secrets.AUTORELEASE_KEY, which only exists on the upstream repo. On a
fork the secret is empty, so the "Delete older auto-releases" step failed with
"no GITHUB_TOKEN found", and even with a token a fork cannot publish into
noDRM's release repo.

Point the release at ${{ github.repository }} and use the built-in
secrets.GITHUB_TOKEN (scoped to the current repo) with contents: write
permission, so each fork publishes its own alpha release with no PAT required.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.github/workflows/release.yml

@@ -1,17 +1,13 @@
 name: Package plugin
 on:
-  workflow_dispatch:
+  push:
-    inputs:
+    branches: [ master ]
-      version:
-        description: "Release version/tag (defaults to the short commit SHA)"
-        required: false
-        type: string
 
 jobs:
   package:
-    name: Package and release
+    name: Package and auto-release
     runs-on: ubuntu-latest
-    # Publish the release into this repo's own Releases, so the built-in
+    # Publish the alpha release into this repo's own Releases, so the built-in
     # GITHUB_TOKEN (scoped to the current repo) is sufficient — no PAT needed.
     permissions:
       contents: write
@@ -19,34 +15,43 @@ jobs:
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
 
-      - name: Determine release version
-        id: meta
-        run: |
-          version="${{ github.event.inputs.version }}"
-          if [ -z "$version" ]; then
-            version="${GITHUB_SHA::7}"
-          fi
-          echo "version=$version" >> "$GITHUB_OUTPUT"
-
       - name: Package
-        run: python3 make_release.py "${{ steps.meta.outputs.version }}"
+        run: python3 make_release.py
 
       - name: Upload
         uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
           name: plugin
-          path: DeDRM_tools_*.zip
+          path: |
+            DeDRM_tools_*.zip
+            DeDRM_tools.zip
 
-      - name: Release
+      - name: Prepare release
-        id: release
+        run: cp DeDRM_tools.zip DeDRM_alpha_${{ github.sha }}.zip
+
+      - name: Delete older auto-releases
+        uses: dev-drprasad/delete-older-releases@dfbe6be2a006e9475dfcbe5b8d201f1824c2a9fe # v0.3.4
+        with:
+          repo: ${{ github.repository }}
+          keep_latest: 0
+          delete_tags: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Auto-release
+        id: autorelease
         uses: softprops/action-gh-release@718ea10b132b3b2eba29c1007bb80653f286566b # v3.0.1
         with:
-          tag_name: ${{ steps.meta.outputs.version }}
+          tag_name: autorelease_${{ github.sha }}
           repository: ${{ github.repository }}
           token: ${{ secrets.GITHUB_TOKEN }}
-          name: DeDRM tools ${{ steps.meta.outputs.version }}
+          name: Automatic alpha release with latest changes
           body: |
-            DeDRM tools plugin package built from commit [${{ github.sha }}](https://github.com/${{ github.repository }}/commit/${{ github.sha }}).
+            This release is automatically generated by Github for each commit.
-          prerelease: false
+
+            This means, every time a change is made to the repo, a release with an untested copy of the plugin at that stage will be created. This will contain the most up-to-date code, but it's not tested at all and may be broken.
+
+            Last update based on Git commit [${{ github.sha }}](https://github.com/${{ github.repository }}/commit/${{ github.sha }}).
+          prerelease: true
           draft: false
-          files: DeDRM_tools_${{ steps.meta.outputs.version }}.zip
+          files: DeDRM_alpha_${{ github.sha }}.zip