Add docs-from-code workflow to process labeled issues with Copilot

.github/workflows/docs-from-code.yml

@@ -0,0 +1,121 @@
+name: Process Docs from Code Issues
+
+on:
+  issues:
+    types: [labeled]
+
+permissions:
+  contents: read
+  issues: write
+
+jobs:
+  assign-to-copilot:
+    name: Assign to Copilot Agent
+    runs-on: ubuntu-latest
+    if: github.event.action == 'labeled' && github.event.label.name == 'docs-from-code'
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Extract SME from issue body
+        id: extract-sme
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const issueBody = context.payload.issue.body || '';
+
+            // Look for PR author pattern in issue body
+            // Expected format from dotnet/aspire workflow: "PR Author: @username" or similar
+            const authorPatterns = [
+              /PR\s*Author:\s*@?([\w-]+)/i,
+              /Author:\s*@?([\w-]+)/i,
+              /SME:\s*@?([\w-]+)/i,
+              /Original\s*PR\s*by\s*@?([\w-]+)/i,
+              /Created\s*by\s*@([\w-]+)/i
+            ];
+
+            let smeUsername = null;
+
+            for (const pattern of authorPatterns) {
+              const match = issueBody.match(pattern);
+              if (match) {
+                smeUsername = match[1];
+                break;
+              }
+            }
+
+            // Also try to extract PR URL if present
+            const prUrlPattern = /https:\/\/github\.com\/dotnet\/aspire\/pull\/(\d+)/;
+            const prUrlMatch = issueBody.match(prUrlPattern);
+
+            if (!smeUsername && prUrlMatch) {
+              // If we found a PR URL but no author, we'll need to fetch it
+              const prNumber = prUrlMatch[1];
+              try {
+                const { data: pr } = await github.rest.pulls.get({
+                  owner: 'dotnet',
+                  repo: 'aspire',
+                  pull_number: parseInt(prNumber)
+                });
+                smeUsername = pr.user.login;
+                console.log(`Extracted SME from PR #${prNumber}: ${smeUsername}`);
+              } catch (error) {
+                console.log(`Could not fetch PR details: ${error.message}`);
+              }
+            }
+
+            core.setOutput('sme', smeUsername || '');
+            core.setOutput('found', smeUsername ? 'true' : 'false');
+
+            console.log(`SME Username: ${smeUsername || 'not found'}`);
+
+      - name: Assign issue to Copilot
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const issueNumber = context.payload.issue.number;
+
+            // Assign the issue to copilot
+            try {
+              await github.rest.issues.addAssignees({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: issueNumber,
+                assignees: ['copilot']
+              });
+              console.log(`Successfully assigned issue #${issueNumber} to copilot`);
+            } catch (error) {
+              console.log(`Could not assign to copilot: ${error.message}`);
+              // Continue even if assignment fails
+            }
+
+      - name: Add comment mentioning SME
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const issueNumber = context.payload.issue.number;
+            const smeUsername = '${{ steps.extract-sme.outputs.sme }}';
+            const smeFound = '${{ steps.extract-sme.outputs.found }}' === 'true';
+
+            let commentBody = '## 🤖 Copilot Agent Assigned\n\n';
+            commentBody += 'This issue has been assigned to GitHub Copilot to draft a pull request based on the description provided.\n\n';
+
+            if (smeFound) {
+              commentBody += '### 📋 SME Review Required\n\n';
+              commentBody += `@${smeUsername} - You have been identified as the subject matter expert (SME) for this documentation update based on the originating PR in the [dotnet/aspire](https://github.com/dotnet/aspire) repository. Please review the draft PR once Copilot has completed its work.\n`;
+            } else {
+              commentBody += '### ⚠️ SME Not Found\n\n';
+              commentBody += 'Could not automatically identify the SME from the issue body. Please manually tag the appropriate reviewer once the draft PR is created.\n';
+            }
+
+            commentBody += '\n---\n*This comment was automatically generated by the docs-from-code workflow.*';
+
+            await github.rest.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: issueNumber,
+              body: commentBody
+            });
+
+            console.log(`Added comment to issue #${issueNumber}`);