fix: dedupe board-owned blocker recovery notice

Co-authored-by: Paperclip <noreply@paperclip.ing>

server/src/__tests__/heartbeat-process-recovery.test.ts

@@ -4539,6 +4539,9 @@ describeEmbeddedPostgres("heartbeat orphaned process recovery", () => {
 
     expect(result.orphanBlockersAssigned).toBe(0);
 
+    const repeatResult = await heartbeat.reconcileStrandedAssignedIssues();
+    expect(repeatResult.orphanBlockersAssigned).toBe(0);
+
     const blocker = await db
       .select()
       .from(issues)
@@ -4547,6 +4550,7 @@ describeEmbeddedPostgres("heartbeat orphaned process recovery", () => {
     expect(blocker?.assigneeAgentId).toBeNull();
 
     const comments = await db.select().from(issueComments).where(eq(issueComments.issueId, blockerIssueId));
+    expect(comments).toHaveLength(1);
     expect(comments[0]?.body).toContain("Board-Owned Blocker");
     expect(comments[0]?.body).toContain("responsibleUserId");
 

server/src/services/recovery/service.ts

@@ -969,6 +969,18 @@ export function recoveryService(db: Db, deps: { enqueueWakeup: RecoveryWakeup })
       const relations = await issuesSvc.getRelationSummaries(candidate.id);
       const blockingLinks = formatIssueLinksForComment(relations.blocks);
       if (candidate.responsibleUserId != null) {
+        const lastComment = await db
+          .select({ body: issueComments.body })
+          .from(issueComments)
+          .where(eq(issueComments.issueId, candidate.id))
+          .orderBy(desc(issueComments.createdAt), desc(issueComments.id))
+          .limit(1)
+          .then((rows) => rows[0] ?? null);
+        if (lastComment?.body.includes("Board-Owned Blocker")) {
+          skipped += 1;
+          continue;
+        }
+
         await issuesSvc.addComment(
           candidate.id,
           [