chore: quality review fixes + maintenance auto-close

.github/workflows/cd.yml

@@ -19,7 +19,7 @@ jobs:
       contents: write
       id-token: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-tags: true
 

.github/workflows/maintenance.yml

@@ -46,3 +46,47 @@ jobs:
                 `---\n_Opened automatically by the Maintenance workflow._`,
               labels: ['maintenance'],
             });
+
+  close-issue-on-success:
+    needs: ci
+    if: success()
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/github-script@v7
+        with:
+          script: |
+            // Close any open maintenance issues — the most recent CI run
+            // proves the underlying problem is resolved. Without this job
+            // the issues opened by `open-issue-on-failure` linger forever
+            // and the repo looks broken to outside visitors even after the
+            // fix lands.
+            const open = await github.rest.issues.listForRepo({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              state: 'open',
+              labels: 'maintenance',
+            });
+            if (open.data.length === 0) {
+              console.log('No open maintenance issues to close.');
+              return;
+            }
+            const run = await github.rest.actions.getWorkflowRun({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              run_id: context.runId,
+            });
+            for (const issue of open.data) {
+              await github.rest.issues.createComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: issue.number,
+                body: `Maintenance CI is green again — closing automatically.\n\n**Run:** ${run.data.html_url}`,
+              });
+              await github.rest.issues.update({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: issue.number,
+                state: 'closed',
+              });
+              console.log(`Closed issue #${issue.number}`);
+            }

src/my_mcp_server/__main__.py

@@ -1,7 +1,7 @@
 """Allow running as ``python -m my_mcp_server``."""
 
-import sys
 import logging
+import sys
 
 from my_mcp_server.server import main