feat(scoring): add draft-PR awareness to classification and queue health

src/scoring/pending-pr-scenarios.ts

@@ -220,6 +220,7 @@ export function applyPendingPrDetectionToScoreInput(
 }
 
 function isDraftPullRequest(pr: PullRequestRecord): boolean {
+  if (pr.isDraft) return true;
   const title = pr.title.trim();
   if (/^\[?\s*draft\s*\]?/i.test(title) || /^draft:/i.test(title)) return true;
   return pr.labels.some((label) => label.toLowerCase() === "draft" || label.toLowerCase() === "wip");

src/signals/engine.ts

@@ -85,6 +85,7 @@ export type QueueHealth = {
     openPullRequests: number;
     unlinkedPullRequests: number;
     stalePullRequests: number;
+    draftPullRequests: number;
     maintainerAuthoredPullRequests: number;
     collisionClusters: number;
     ageBuckets: {
@@ -913,6 +914,7 @@ export function buildQueueHealth(
     countOverrides.likelyReviewablePullRequests !== undefined ? "authoritative" : openPullRequestCount > openPullRequests.length ? "sampled_cache" : "cache";
   const unlinkedPullRequests = openPullRequests.filter((pr) => pr.linkedIssues.length === 0);
   const stalePullRequests = openPullRequests.filter((pr) => daysSince(pr.updatedAt ?? pr.createdAt) >= 14);
+  const draftPullRequests = openPullRequests.filter((pr) => pr.isDraft);
   const maintainerAuthoredPullRequests = openPullRequests.filter((pr) => isMaintainerAssociation(pr.authorAssociation));
   const cachedLikelyReviewablePullRequests = openPullRequests.filter((pr) => pr.linkedIssues.length > 0 && daysSince(pr.updatedAt ?? pr.createdAt) < 30).length;
   const likelyReviewablePullRequests = Math.min(openPullRequestCount, Math.max(cachedLikelyReviewablePullRequests, countOverrides.likelyReviewablePullRequests ?? 0));
@@ -963,6 +965,16 @@ export function buildQueueHealth(
       detail: `${stalePullRequests.length} open pull request(s) have not updated in at least 14 days.`,
     });
   }
+  const inactiveDraftPullRequests = draftPullRequests.filter((pr) => daysSince(pr.updatedAt ?? pr.createdAt) >= 14);
+  if (inactiveDraftPullRequests.length > 0) {
+    findings.push({
+      code: "inactive_draft_prs",
+      severity: "info",
+      title: "Draft PRs have been open without recent activity",
+      detail: `${inactiveDraftPullRequests.length} draft pull request(s) have not updated in at least 14 days — they may be abandoned or blocked.`,
+      action: "Mark as ready for review when work resumes, or close if the approach has been abandoned.",
+    });
+  }
   return {
     repoFullName,
     generatedAt: nowIso(),
@@ -974,6 +986,7 @@ export function buildQueueHealth(
       openPullRequests: openPullRequestCount,
       unlinkedPullRequests: unlinkedPullRequests.length,
       stalePullRequests: stalePullRequests.length,
+      draftPullRequests: draftPullRequests.length,
       maintainerAuthoredPullRequests: maintainerAuthoredPullRequests.length,
       collisionClusters: collisions.summary.clusterCount,
       ageBuckets,

test/unit/contributor-open-pr-monitor.test.ts

@@ -144,6 +144,16 @@ describe("contributor open PR monitor", () => {
     ).toBe("reviewable");
   });
 
+  it("classifies a GitHub-native draft PR as draft even without draft in title or labels", () => {
+    const nativeDraft = classifyOpenPullRequest({
+      pr: pr({ number: 20, title: "Add cursor pagination", isDraft: true, labels: [] }),
+      roleContext: outsideContributorRole,
+      reviews: [],
+      checks: [],
+    });
+    expect(mapPendingClassToWorkClassification(nativeDraft, { changeRequestCount: 0, checkFailureCount: 0, duplicateProne: false, missingTests: false })).toBe("draft");
+  });
+
   it("builds contributor-wide monitor answer from registered repos only", async () => {
     const env = createTestEnv();
     vi.spyOn(repositories, "listRepositories").mockResolvedValue([

test/unit/open-pr-pressure-scenarios.test.ts

@@ -18,6 +18,7 @@ function queueHealth(level: QueueHealth["level"], overrides: Partial<QueueHealth
       openPullRequests: level === "low" ? 1 : 12,
       unlinkedPullRequests: 0,
       stalePullRequests: level === "high" || level === "critical" ? 4 : 0,
+      draftPullRequests: 0,
       maintainerAuthoredPullRequests: 0,
       collisionClusters: 0,
       ageBuckets: { under7Days: 1, days7To30: 0, over30Days: 0 },

test/unit/queue-trends.test.ts

@@ -31,6 +31,7 @@ describe("queue trend windows", () => {
           openPullRequests: 12,
           unlinkedPullRequests: 2,
           stalePullRequests: 5,
+          draftPullRequests: 0,
           maintainerAuthoredPullRequests: 1,
           collisionClusters: 4,
           ageBuckets: { under7Days: 2, days7To30: 6, over30Days: 4 },

test/unit/repo-policy-readiness.test.ts

@@ -67,6 +67,7 @@ function queue(overrides: Partial<QueueHealth> = {}): QueueHealth {
       openPullRequests: 1,
       unlinkedPullRequests: 0,
       stalePullRequests: 0,
+      draftPullRequests: 0,
       maintainerAuthoredPullRequests: 0,
       collisionClusters: 0,
       ageBuckets: { under7Days: 1, days7To30: 0, over30Days: 0 },

test/unit/scenario-summary.test.ts

@@ -63,6 +63,7 @@ function queueHealth(level: QueueHealth["level"]): QueueHealth {
       openPullRequests: 1,
       unlinkedPullRequests: 0,
       stalePullRequests: 0,
+      draftPullRequests: 0,
       maintainerAuthoredPullRequests: 0,
       collisionClusters: 0,
       ageBuckets: { under7Days: 1, days7To30: 0, over30Days: 0 },

test/unit/self-dogfood-registration-pack.test.ts

@@ -146,6 +146,7 @@ function readinessFixture(overrides: Partial<RegistrationReadinessReport> = {}):
           openPullRequests: 6,
           unlinkedPullRequests: 1,
           stalePullRequests: 2,
+          draftPullRequests: 0,
           maintainerAuthoredPullRequests: 0,
           collisionClusters: 0,
           ageBuckets: { under7Days: 2, days7To30: 3, over30Days: 1 },

test/unit/signals-coverage.test.ts

@@ -1565,6 +1565,30 @@ describe("signal coverage edge cases", () => {
     expect(fitOf(matched)).toBe((fitOf(offLanguage) ?? 0) + 10);
     expect(fitOf(unknownLanguage)).toBe(fitOf(offLanguage));
   });
+  it("buildQueueHealth counts draft PRs and fires inactive_draft_prs finding when stale", () => {
+    const directRepo = repo("owner/draft-test");
+    const collisions = buildCollisionReport(directRepo.fullName, [], []);
+    const staleDate = new Date(Date.now() - 20 * 86_400_000).toISOString();
+    const recentDate = new Date().toISOString();
+
+    // A stale draft PR triggers the finding; a recent draft does not.
+    const staleDraftPr = pr(directRepo.fullName, 10, "Draft: refactor auth", { isDraft: true, updatedAt: staleDate });
+    const recentDraftPr = pr(directRepo.fullName, 11, "Draft: add pagination", { isDraft: true, updatedAt: recentDate });
+    const nonDraftPr = pr(directRepo.fullName, 12, "Fix login redirect", { isDraft: false });
+
+    const withStaleDraft = buildQueueHealth(directRepo, [], [staleDraftPr, nonDraftPr], collisions);
+    expect(withStaleDraft.signals.draftPullRequests).toBe(1);
+    expect(withStaleDraft.findings.some((f) => f.code === "inactive_draft_prs")).toBe(true);
+
+    const withRecentDraft = buildQueueHealth(directRepo, [], [recentDraftPr, nonDraftPr], collisions);
+    expect(withRecentDraft.signals.draftPullRequests).toBe(1);
+    expect(withRecentDraft.findings.some((f) => f.code === "inactive_draft_prs")).toBe(false);
+
+    // No drafts: signal is zero and finding is absent.
+    const noDrafts = buildQueueHealth(directRepo, [], [nonDraftPr], collisions);
+    expect(noDrafts.signals.draftPullRequests).toBe(0);
+    expect(noDrafts.findings.some((f) => f.code === "inactive_draft_prs")).toBe(false);
+  });
 });
 
 function repo(fullName: string, overrides: Partial<RegistryRepoConfig> = {}): RepositoryRecord {
@@ -1680,6 +1704,7 @@ function queueHealthFixture(repoFullName: string, level: QueueHealth["level"]):
       openPullRequests: level === "low" ? 1 : level === "medium" ? 4 : level === "high" ? 9 : 16,
       unlinkedPullRequests: 0,
       stalePullRequests: 0,
+      draftPullRequests: 0,
       maintainerAuthoredPullRequests: 0,
       collisionClusters: 0,
       ageBuckets: { under7Days: 0, days7To30: 0, over30Days: 0 },