fix: use PR-based approach for beta version updates

- Replace direct push with PR creation to bypass branch protection rules
- Add bot check to both jobs to prevent loops and double-publish
- Remove needs dependency so PyPI publish runs in parallel
- Simplify by not auto-merging the version PR

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.github/workflows/beta-release.yml

@@ -16,8 +16,12 @@ jobs:
   update_unity_beta_version:
     name: Update Unity package to beta version
     runs-on: ubuntu-latest
+    # Avoid running when the workflow's own automation merges the PR
+    # created by this workflow (prevents a version-bump loop).
+    if: github.actor != 'github-actions[bot]'
     permissions:
       contents: write
+      pull-requests: write
     outputs:
       unity_beta_version: ${{ steps.version.outputs.unity_beta_version }}
       version_updated: ${{ steps.commit.outputs.updated }}
@@ -75,9 +79,12 @@ jobs:
           echo "Updated MCPForUnity/package.json:"
           jq '.version' MCPForUnity/package.json
 
-      - name: Commit and push beta version
+      - name: Commit to temporary branch and create PR
         id: commit
         if: steps.version.outputs.already_beta != 'true'
+        env:
+          GH_TOKEN: ${{ github.token }}
+          BETA_VERSION: ${{ steps.version.outputs.unity_beta_version }}
         shell: bash
         run: |
           set -euo pipefail
@@ -87,17 +94,36 @@ jobs:
           if git diff --quiet MCPForUnity/package.json; then
             echo "No changes to commit"
             echo "updated=false" >> "$GITHUB_OUTPUT"
-          else
-            git add MCPForUnity/package.json
-            git commit -m "chore: update Unity package to beta version ${{ steps.version.outputs.unity_beta_version }}"
-            git push origin beta
-            echo "updated=true" >> "$GITHUB_OUTPUT"
+            exit 0
           fi
 
+          # Create a temporary branch for the version update
+          BRANCH="beta-version-${BETA_VERSION}-${GITHUB_RUN_ID}"
+          echo "branch=$BRANCH" >> "$GITHUB_OUTPUT"
+
+          git checkout -b "$BRANCH"
+          git add MCPForUnity/package.json
+          git commit -m "chore: update Unity package to beta version ${BETA_VERSION}"
+          git push origin "$BRANCH"
+
+          # Check if PR already exists
+          if gh pr view "$BRANCH" >/dev/null 2>&1; then
+            echo "PR already exists for $BRANCH"
+          else
+            PR_URL=$(gh pr create \
+              --base beta \
+              --head "$BRANCH" \
+              --title "chore: update Unity package to beta version ${BETA_VERSION}" \
+              --body "Automated beta version bump for the Unity package.")
+            echo "pr_url=$PR_URL" >> "$GITHUB_OUTPUT"
+          fi
+          echo "updated=true" >> "$GITHUB_OUTPUT"
+
   publish_pypi_prerelease:
     name: Publish beta to PyPI (pre-release)
-    needs: update_unity_beta_version
     runs-on: ubuntu-latest
+    # Avoid double-publish when the bot merges the version bump PR
+    if: github.actor != 'github-actions[bot]'
     environment:
       name: pypi
       url: https://pypi.org/p/mcpforunityserver