Add worflows (#1547)

Signed-off-by: Jael Gu <[email protected]>

Author: jaelgu

.github/pull_request_template.md

@@ -1,11 +1,47 @@
-<!-- If there are many commits but not yours, please re-Fork Bootcamp repo and submit a PR again.-->
+## 📌 Description
 
-- [ ] A reference to a related issue in your repository.
-  
-  Each PR is related to an issue, and you need to list that issue.
+<!-- Describe what this PR does and why it's needed -->
+Closes #[issue_number]
 
-- [ ] A description of the changes proposed in the pull request.
+## ✅ Changes
 
-  A brief introduction to this PR.
+- [ ] Feature added: ...
+- [ ] Bug fixed: ...
+- [ ] Refactor: ...
+- [ ] Other (explain): ...
 
-- [ ] Add delight to the experience when all tasks are complete :tada:
+## 🔬 How to Test
+
+<!-- Provide steps to manually test or describe how it was tested -->
+1. ...
+2. ...
+
+## 📝 Checklist
+
+- [ ] Code compiles and runs
+- [ ] Linting passes (Check jupyter notebooks: `pip install "black[jupyter]"` > `black {file_or_directory}`)
+- [ ] PR includes relevant docs or comments
+- [ ] Rebased on the latest `main` (no merge commits or conflicts)
+
+## 🧼 Commit Hygiene
+
+✔️ Follow best practices:
+- Small, focused commits with clear messages
+- Group related changes together
+- Avoid large monolithic commits
+- Use meaningful commit messages (e.g., `fix:`, `feat:`, `refactor:`)
+
+## 👀 Reviewer Notes
+
+<!-- Any context or areas of focus for reviewers -->
+- Please focus on ...
+- Watch out for ...
+
+---
+
+### 📎 Related Issues, PRs, or Docs
+
+- Related PR: #
+- Issue: #
+
+---

.github/workflows/close-stale.yml

@@ -0,0 +1,37 @@
+name: Close Stale Issues and PRs
+
+on:
+  schedule:
+    - cron: '0 1 * * *'  # Runs daily at 01:00 UTC
+
+permissions:
+  issues: write
+  pull-requests: write
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v9
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+
+          # ⏱ Time before marking as stale
+          days-before-stale: 90
+          days-before-close: 5
+
+          # 🏷 Stale label (added automatically)
+          stale-issue-label: 'stale'
+          stale-pr-label: 'stale'
+
+          # 💬 Messages for stale warnings
+          stale-issue-message: 'This issue has been automatically marked as stale due to 90 days of inactivity. It will be closed in 5 days if no further activity occurs.'
+          close-issue-message: 'Closing this issue due to prolonged inactivity. Please reopen if needed or add new context.'
+
+          stale-pr-message: 'This pull request has been automatically marked as stale due to 90 days of inactivity. It will be closed in 5 days if no further activity occurs.'
+          close-pr-message: 'Closing this pull request due to prolonged inactivity. Please reopen if needed or add updates.'
+
+          # ⚙ Behavior
+          remove-stale-when-updated: true
+          exempt-issue-labels: 'keep-open,security'
+          exempt-pr-labels: 'do-not-close'

.github/workflows/pr_automerge.yml

@@ -0,0 +1,45 @@
+# .github/workflows/auto-merge-on-lgtm.yml
+name: Auto-Merge on LGTM Label
+
+on:
+  pull_request:
+    types: [labeled]
+
+jobs:
+  auto-merge:
+    if: github.event.label.name == 'lgtm'
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      pull-requests: write
+
+    steps:
+      - name: Check if label was added by a maintainer
+        uses: actions/github-script@v7
+        id: check_maintainer
+        with:
+          script: |
+            const labeler = context.payload.sender.login;
+            const repo = context.repo.repo;
+            const owner = context.repo.owner;
+
+            const { data: collaborators } = await github.rest.repos.listCollaborators({
+              owner,
+              repo,
+              affiliation: 'direct',
+            });
+
+            const isMaintainer = collaborators.some(
+              (user) => user.login === labeler && ['admin', 'maintain', 'write'].includes(user.permissions.push ? 'write' : 'read')
+            );
+
+            if (!isMaintainer) {
+              core.setFailed(`Label was added by ${labeler}, who is not a maintainer.`);
+            }
+
+      - name: Enable auto-merge
+        if: success()
+        uses: peter-evans/enable-pull-request-automerge@v2
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          merge-method: rebase  # "squash", "merge", or "rebase"