Add create automerge PR workflow and trigger automerge dispatch

template-files/automerge.yml

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+# Created using @tscircuit/plop (npm install -g @tscircuit/plop)
+name: Automerge
+
+on:
+  pull_request:
+    types:
+      - opened
+      - reopened
+      - ready_for_review
+      - synchronize
+      - labeled
+      - unlabeled
+  pull_request_review:
+    types:
+      - submitted
+  check_suite:
+    types:
+      - completed
+  status: {}
+  workflow_dispatch:
+  repository_dispatch:
+    types:
+      - automerge-pull-request
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  automerge:
+    if: github.event_name != 'pull_request' || github.event.pull_request.draft == false
+    runs-on: ubuntu-latest
+    steps:
+      - name: Merge pull requests
+        uses: pascalgn/[email protected]
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          MERGE_LABELS: automerge
+          MERGE_REMOVE_LABELS: automerge
+          MERGE_METHOD: squash
+          MERGE_DELETE_BRANCH: "true"
+          MERGE_COMMIT_MESSAGE: pull-request-title
+          UPDATE_LABELS: automerge

template-files/create-automerge-pr.yml

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+# Created using @tscircuit/plop (npm install -g @tscircuit/plop)
+name: Create Automerge PR
+
+on:
+  workflow_dispatch:
+    inputs:
+      head:
+        description: The branch to merge into the base branch
+        required: true
+      base:
+        description: The base branch to merge into
+        required: false
+        default: main
+      title:
+        description: The pull request title
+        required: false
+      body:
+        description: The pull request body
+        required: false
+      labels:
+        description: Comma separated list of labels to apply
+        required: false
+        default: automerge
+  repository_dispatch:
+    types:
+      - create-automerge-pr
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  create-pr:
+    runs-on: ubuntu-latest
+    env:
+      HEAD_BRANCH: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.head || github.event.client_payload.head }}
+      BASE_BRANCH: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.base || github.event.client_payload.base || 'main' }}
+      PR_TITLE: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.title || github.event.client_payload.title || '' }}
+      PR_BODY: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.body || github.event.client_payload.body || '' }}
+      PR_LABELS: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.labels || github.event.client_payload.labels || 'automerge' }}
+    steps:
+      - name: Validate input
+        uses: actions/github-script@v7
+        with:
+          script: |
+            if (!process.env.HEAD_BRANCH) {
+              core.setFailed('A head branch must be provided via workflow inputs or repository_dispatch payload.');
+            }
+      - name: Create pull request
+        id: create_pr
+        uses: actions/github-script@v7
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const owner = context.repo.owner;
+            const repo = context.repo.repo;
+            const head = process.env.HEAD_BRANCH;
+            const base = process.env.BASE_BRANCH;
+            const title = process.env.PR_TITLE || `Automated update from ${head}`;
+            const body = process.env.PR_BODY || 'This pull request was created automatically.';
+
+            try {
+              const response = await github.rest.pulls.create({ owner, repo, head, base, title, body });
+              core.setOutput('pull_number', response.data.number.toString());
+              core.setOutput('html_url', response.data.html_url);
+            } catch (error) {
+              if (error.status === 422) {
+                core.info('A matching pull request already exists or the branch is unavailable. Skipping creation.');
+                core.setOutput('skipped', 'true');
+                return;
+              }
+              throw error;
+            }
+      - name: Add labels
+        if: steps.create_pr.outputs.skipped != 'true'
+        uses: actions/github-script@v7
+        env:
+          PULL_NUMBER: ${{ steps.create_pr.outputs.pull_number }}
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const labels = (process.env.PR_LABELS || '').split(',').map(label => label.trim()).filter(Boolean);
+            if (!labels.length) {
+              core.info('No labels provided. Skipping label application.');
+              return;
+            }
+            await github.rest.issues.addLabels({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: Number(process.env.PULL_NUMBER),
+              labels,
+            });
+      - name: Dispatch automerge workflow
+        if: steps.create_pr.outputs.skipped != 'true'
+        uses: actions/github-script@v7
+        env:
+          PULL_NUMBER: ${{ steps.create_pr.outputs.pull_number }}
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            await github.rest.repos.createDispatchEvent({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              event_type: 'automerge-pull-request',
+              client_payload: {
+                pull_number: Number(process.env.PULL_NUMBER),
+              },
+            });
+            core.info(`Triggered automerge workflow for pull request #${process.env.PULL_NUMBER}.`);