fix(triage): extract barnacle workflow

test/scripts/barnacle-auto-response.test.ts

@@ -0,0 +1,122 @@
+import { describe, expect, it } from "vitest";
+import {
+  candidateLabels,
+  classifyPullRequestCandidateLabels,
+  managedLabelSpecs,
+} from "../../scripts/github/barnacle-auto-response.mjs";
+
+const blankTemplateBody = [
+  "## Summary",
+  "",
+  "Describe the problem and fix in 2–5 bullets:",
+  "",
+  "- Problem:",
+  "- Why it matters:",
+  "- What changed:",
+  "- What did NOT change (scope boundary):",
+  "",
+  "## Linked Issue/PR",
+  "",
+  "- Closes #",
+  "- Related #",
+  "",
+  "## Root Cause (if applicable)",
+  "",
+  "- Root cause:",
+  "",
+  "## Regression Test Plan (if applicable)",
+  "",
+  "- Target test or file:",
+].join("\n");
+
+function pr(title: string, body = blankTemplateBody) {
+  return {
+    title,
+    body,
+  };
+}
+
+function file(filename: string, status = "modified") {
+  return {
+    filename,
+    status,
+  };
+}
+
+describe("barnacle-auto-response", () => {
+  it("keeps Barnacle-owned labels documented and ClawHub spelled correctly", () => {
+    expect(managedLabelSpecs["r: skill"].description).toContain("ClawHub");
+    expect(managedLabelSpecs["r: skill"].description).not.toContain("Clawdhub");
+    expect(managedLabelSpecs.dirty.description).toContain("dirty/unrelated");
+    expect(managedLabelSpecs["r: support"].description).toContain("support requests");
+    expect(managedLabelSpecs["r: third-party-extension"].description).toContain("ClawHub");
+    expect(managedLabelSpecs["r: too-many-prs"].description).toContain("ten active PRs");
+
+    for (const label of Object.values(candidateLabels)) {
+      expect(managedLabelSpecs[label]).toBeDefined();
+      expect(managedLabelSpecs[label].description).toMatch(/^Candidate:/);
+    }
+  });
+
+  it("labels docs-only discoverability churn without closing it", () => {
+    const labels = classifyPullRequestCandidateLabels(pr("Update README translation"), [
+      file("README.md"),
+    ]);
+
+    expect(labels).toEqual(
+      expect.arrayContaining([
+        candidateLabels.blankTemplate,
+        candidateLabels.lowSignalDocs,
+        candidateLabels.docsDiscoverability,
+      ]),
+    );
+  });
+
+  it("does not treat template boilerplate as behavior evidence for test-only churn", () => {
+    const labels = classifyPullRequestCandidateLabels(pr("Add test coverage"), [
+      file("src/gateway/foo.test.ts"),
+    ]);
+
+    expect(labels).toEqual(
+      expect.arrayContaining([candidateLabels.blankTemplate, candidateLabels.testOnlyNoBug]),
+    );
+  });
+
+  it("uses linked issues as context and suppresses low-signal docs labels", () => {
+    const labels = classifyPullRequestCandidateLabels(
+      pr("Update docs", `${blankTemplateBody}\n\nRelated #12345`),
+      [file("docs/plugins/community.md")],
+    );
+
+    expect(labels).not.toContain(candidateLabels.lowSignalDocs);
+    expect(labels).not.toContain(candidateLabels.docsDiscoverability);
+  });
+
+  it("warns on broad high-surface PRs instead of auto-closing them as dirty", () => {
+    const labels = classifyPullRequestCandidateLabels(pr("Cleanup plugin docs"), [
+      file("ui/src/app.ts"),
+      file("src/gateway/server.ts"),
+      file("extensions/slack/src/index.ts"),
+      file("docs/plugins/community.md"),
+    ]);
+
+    expect(labels).toContain(candidateLabels.dirtyCandidate);
+  });
+
+  it("suppresses dirty-candidate when the PR has concrete behavior context", () => {
+    const body = [
+      "- Problem: gateway crashes when plugin metadata is missing",
+      "- Why it matters: users lose the running session",
+      "- What changed: add a guard around metadata loading",
+    ].join("\n");
+
+    const labels = classifyPullRequestCandidateLabels(pr("Fix gateway crash", body), [
+      file("ui/src/app.ts"),
+      file("src/gateway/server.ts"),
+      file("extensions/slack/src/index.ts"),
+      file("docs/plugins/community.md"),
+    ]);
+
+    expect(labels).not.toContain(candidateLabels.dirtyCandidate);
+  });
+});