Add issue management automations

.github/workflows/close-stale-issues.yml

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+name: Close Stale Issues
+
+on:
+  schedule:
+    - cron: "0 */6 * * *"
+
+permissions:
+  issues: write
+
+jobs:
+  cleanup:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: aws-actions/stale-issue-cleanup@v6
+        with:
+          response-requested-label: response-requested
+          days-before-stale: 7
+          days-before-close: 5
+          stale-issue-label: closing-soon
+          stale-issue-message: |
+            This issue has not received a response in 7 days. If no further activity occurs within the next 5 days, it will be automatically closed.
+          close-issue-message: |
+            Closing this issue due to inactivity. If you believe this is still relevant, please open a new issue with updated information.
+          minimum-upvotes-to-exempt: 5
+          exempt-issue-labels: "bug,feature-request,p1"
+          repo-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/closed-issue-message.yml

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+name: Closed Issue Message
+
+on:
+  issues:
+    types: [closed]
+
+permissions:
+  issues: write
+
+jobs:
+  post-message-and-lock:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/github-script@v7
+        with:
+          script: |
+            const { owner, repo } = context.repo;
+            const number = context.issue.number;
+
+            await github.rest.issues.createComment({
+              owner,
+              repo,
+              issue_number: number,
+              body: '⚠️ This issue has been closed. If you have a similar problem, please [open a new issue](../../issues/new/choose) and include relevant details so we can investigate properly.\n\nComments on closed issues are hard for our team to track. A new issue ensures you get the attention you need.'
+            });
+
+            await github.rest.issues.lock({
+              owner,
+              repo,
+              issue_number: number,
+              lock_reason: 'resolved'
+            });

.github/workflows/issue-labeler.yml

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+name: Issue Labeler
+
+on:
+  issues:
+    types: [opened, edited]
+
+permissions:
+  issues: write
+
+jobs:
+  label-issue:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/github-script@v7
+        with:
+          script: |
+            const body = context.payload.issue.body || '';
+            const action = context.payload.action;
+            const issueNumber = context.issue.number;
+            const { owner, repo } = context.repo;
+
+            const labelsToAdd = [];
+
+            if (action === 'opened') {
+              labelsToAdd.push('needs-triage');
+            }
+
+            const dropdownYes = /### Is this a regression\?\s*\n\s*Yes/i.test(body);
+            if (dropdownYes) {
+              labelsToAdd.push('regression', 'p1');
+            }
+
+            if (labelsToAdd.length > 0) {
+              await github.rest.issues.addLabels({
+                owner,
+                repo,
+                issue_number: issueNumber,
+                labels: labelsToAdd
+              });
+              core.info(`Added labels to issue #${issueNumber}: ${labelsToAdd.join(', ')}`);
+            }

.github/workflows/unlock-reopened-issue.yml

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+name: Unlock Reopened Issues
+
+on:
+  issues:
+    types: [reopened]
+
+permissions:
+  issues: write
+
+jobs:
+  unlock:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/github-script@v7
+        with:
+          script: |
+            await github.rest.issues.unlock({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number
+            });