add automated release workflows (PyPI disabled for testing)

.github/workflows/pr-automerge.yml

@@ -0,0 +1,66 @@
+name: PR Auto-merge
+
+on:
+  pull_request_review:
+    types: [submitted]
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  auto-merge:
+    name: Auto-merge Release PRs
+    runs-on: ubuntu-latest
+    # Only run when PR is approved and it's a release PR
+    if: |
+      github.event.review.state == 'approved' &&
+      github.event.pull_request.user.login == 'github-actions[bot]' &&
+      startsWith(github.event.pull_request.head.ref, 'release/') &&
+      github.event.pull_request.base.ref == 'main'
+
+    steps:
+      - name: Check CI status
+        id: ci-status
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const { data: checkRuns } = await github.rest.checks.listForRef({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              ref: context.payload.pull_request.head.sha
+            });
+
+            // Include ALL required checks
+            const requiredChecks = [
+              'Lint',
+              'Test Python 3.10',
+              'Test Python 3.11',
+              'Test Python 3.12',
+              'Test Python 3.13',
+              'Build Package'
+            ];
+
+            const allPassed = requiredChecks.every(checkName => {
+              const check = checkRuns.check_runs.find(run => run.name === checkName);
+              return check && check.conclusion === 'success';
+            });
+
+            console.log(`All required checks passed: ${allPassed}`);
+            return allPassed;
+
+      - name: Auto-merge PR
+        if: steps.ci-status.outputs.result == 'true'
+        uses: actions/github-script@v7
+        with:
+          script: |
+            await github.rest.pulls.merge({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              pull_number: context.payload.pull_request.number,
+              merge_method: 'squash',
+              commit_title: `Release v${context.payload.pull_request.head.ref.split('/')[1]}`,
+              commit_message: 'Auto-merged by release workflow'
+            });
+
+            console.log('✓ PR auto-merged successfully');