CI: add contributor tier labels

.github/workflows/labeler.yml

@@ -36,7 +36,7 @@ jobs:
             }
 
             const sizeLabels = ["size: XS", "size: S", "size: M", "size: L", "size: XL"];
-            const labelColor = "fbca04";
+            const labelColor = "b76e79";
 
             for (const label of sizeLabels) {
               try {
@@ -114,7 +114,7 @@ jobs:
               issue_number: pullRequest.number,
               labels: [targetSizeLabel],
             });
-      - name: Apply maintainer label for org members
+      - name: Apply maintainer or trusted-contributor label
         uses: actions/github-script@f28e40c7f34bde8b3046d885e986cb6290c5673b # v7
         with:
           github-token: ${{ steps.app-token.outputs.token }}
@@ -124,6 +124,12 @@ jobs:
               return;
             }
 
+            const repo = `${context.repo.owner}/${context.repo.repo}`;
+            const trustedLabel = "trusted-contributor";
+            const experiencedLabel = "experienced-contributor";
+            const trustedThreshold = 4;
+            const experiencedThreshold = 10;
+
             let isMaintainer = false;
             try {
               const membership = await github.rest.teams.getMembershipForUserInOrg({
@@ -138,15 +144,38 @@ jobs:
               }
             }
 
-            if (!isMaintainer) {
+            if (isMaintainer) {
-              return;
-            }
-
               await github.rest.issues.addLabels({
                 ...context.repo,
                 issue_number: context.payload.pull_request.number,
                 labels: ["maintainer"],
               });
+              return;
+            }
+
+            const mergedQuery = `repo:${repo} is:pr is:merged author:${login}`;
+            const merged = await github.rest.search.issuesAndPullRequests({
+              q: mergedQuery,
+              per_page: 1,
+            });
+            const mergedCount = merged?.data?.total_count ?? 0;
+
+            if (mergedCount >= experiencedThreshold) {
+              await github.rest.issues.addLabels({
+                ...context.repo,
+                issue_number: context.payload.pull_request.number,
+                labels: [experiencedLabel],
+              });
+              return;
+            }
+
+            if (mergedCount >= trustedThreshold) {
+              await github.rest.issues.addLabels({
+                ...context.repo,
+                issue_number: context.payload.pull_request.number,
+                labels: [trustedLabel],
+              });
+            }
 
   label-issues:
     permissions:
@@ -158,7 +187,7 @@ jobs:
         with:
           app-id: "2729701"
           private-key: ${{ secrets.GH_APP_PRIVATE_KEY }}
-      - name: Apply maintainer label for org members
+      - name: Apply maintainer or trusted-contributor label
         uses: actions/github-script@f28e40c7f34bde8b3046d885e986cb6290c5673b # v7
         with:
           github-token: ${{ steps.app-token.outputs.token }}
@@ -168,6 +197,12 @@ jobs:
               return;
             }
 
+            const repo = `${context.repo.owner}/${context.repo.repo}`;
+            const trustedLabel = "trusted-contributor";
+            const experiencedLabel = "experienced-contributor";
+            const trustedThreshold = 4;
+            const experiencedThreshold = 10;
+
             let isMaintainer = false;
             try {
               const membership = await github.rest.teams.getMembershipForUserInOrg({
@@ -182,12 +217,35 @@ jobs:
               }
             }
 
-            if (!isMaintainer) {
+            if (isMaintainer) {
-              return;
-            }
-
               await github.rest.issues.addLabels({
                 ...context.repo,
                 issue_number: context.payload.issue.number,
                 labels: ["maintainer"],
               });
+              return;
+            }
+
+            const mergedQuery = `repo:${repo} is:pr is:merged author:${login}`;
+            const merged = await github.rest.search.issuesAndPullRequests({
+              q: mergedQuery,
+              per_page: 1,
+            });
+            const mergedCount = merged?.data?.total_count ?? 0;
+
+            if (mergedCount >= experiencedThreshold) {
+              await github.rest.issues.addLabels({
+                ...context.repo,
+                issue_number: context.payload.issue.number,
+                labels: [experiencedLabel],
+              });
+              return;
+            }
+
+            if (mergedCount >= trustedThreshold) {
+              await github.rest.issues.addLabels({
+                ...context.repo,
+                issue_number: context.payload.issue.number,
+                labels: [trustedLabel],
+              });
+            }