diff --git a/.github/workflows/pr-feature-label.yml b/.github/workflows/pr-feature-label.yml
new file mode 100644
index 000000000..c3c2b9027
--- /dev/null
+++ b/.github/workflows/pr-feature-label.yml
@@ -0,0 +1,56 @@
+name: PR Feature Label
+
+on:
+  pull_request:
+    types: [opened]
+
+jobs:
+  label:
+    runs-on: ubuntu-latest
+    # Skip fork PRs (read-only token can't label) and dependabot — matches repo convention
+    if: github.event.pull_request.head.repo.full_name == github.repository && github.actor != 'dependabot[bot]'
+    permissions:
+      issues: write # create the label if it doesn't exist yet
+      pull-requests: write # add the label to the PR
+    steps:
+      - uses: actions/github-script@v8
+        with:
+          script: |
+            const prefix = 'feature/';
+            const pr = context.payload.pull_request;
+
+            // Label whichever side of the PR is a feature branch:
+            //  - base is feature/* : a PR merging INTO a long-lived feature branch
+            //  - head is feature/* : a feature branch being merged into main (or elsewhere)
+            // Both produce a "feature:<name>" label; if both sides qualify, both are applied.
+            const labels = [...new Set(
+              [pr.base.ref, pr.head.ref]
+                .filter((ref) => ref.startsWith(prefix))
+                .map((ref) => `feature:${ref.slice(prefix.length)}`)
+            )];
+
+            if (labels.length === 0) {
+              console.log(`Neither base "${pr.base.ref}" nor head "${pr.head.ref}" is a feature branch; nothing to do.`);
+              return;
+            }
+
+            // Create any labels that don't exist yet (auto-created gray).
+            for (const label of labels) {
+              try {
+                await github.rest.issues.getLabel({ ...context.repo, name: label });
+              } catch (error) {
+                if (error.status === 404) {
+                  await github.rest.issues.createLabel({ ...context.repo, name: label, color: 'ededed' });
+                  console.log(`Created label "${label}"`);
+                } else {
+                  throw error;
+                }
+              }
+            }
+
+            await github.rest.issues.addLabels({
+              ...context.repo,
+              issue_number: pr.number,
+              labels,
+            });
+            console.log(`Applied label(s) ${labels.map((l) => `"${l}"`).join(', ')} to PR #${pr.number}`);
diff --git a/.gitignore b/.gitignore
index 926ed24c2..80e0c1837 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,6 +20,7 @@ tableau-mcp.mcpb
 *.tgz
 *.tar.gz
 *.zip
+.DS_Store
 
 # MCP Apps
 src/web/apps/dist/