diff --git a/src/app/api/issues/move/route.ts b/src/app/api/issues/move/route.ts
index dd9a9dd8..6f35f732 100644
--- a/src/app/api/issues/move/route.ts
+++ b/src/app/api/issues/move/route.ts
@@ -1,13 +1,9 @@
 import { NextResponse } from "next/server";
 import { prisma } from "@/lib/prisma";
 import { updateIssueLabels, removeIssueLabel, addIssueLabel } from "@/lib/github";
-import { STATUS_LABELS, StatusLabel } from "@/types";
+import { STATUS_LABELS, isStatusLabel } from "@/types";
 import { authorizeRequest, getAuthorizedActor } from "@/lib/auth";
 
-function isStatusLabel(label: string): label is StatusLabel {
-  return (STATUS_LABELS as readonly string[]).includes(label);
-}
-
 export async function POST(request: Request) {
   const auth = await authorizeRequest(request);
   if (!auth.authorized) {
diff --git a/src/app/api/issues/status/route.ts b/src/app/api/issues/status/route.ts
index e843ce21..beaceb58 100644
--- a/src/app/api/issues/status/route.ts
+++ b/src/app/api/issues/status/route.ts
@@ -1,13 +1,9 @@
 import { NextResponse } from "next/server";
 import { prisma } from "@/lib/prisma";
 import { removeIssueLabel, addIssueLabel } from "@/lib/github";
-import { STATUS_LABELS, StatusLabel } from "@/types";
+import { STATUS_LABELS, StatusLabel, isStatusLabel } from "@/types";
 import { authorizeRequest, getAuthorizedActor } from "@/lib/auth";
 
-function isStatusLabel(label: string): label is StatusLabel {
-  return (STATUS_LABELS as readonly string[]).includes(label);
-}
-
 export async function POST(request: Request) {
   const auth = await authorizeRequest(request);
   if (!auth.authorized) {
diff --git a/src/types/index.ts b/src/types/index.ts
index 915ab19e..41411ba6 100644
--- a/src/types/index.ts
+++ b/src/types/index.ts
@@ -123,6 +123,11 @@ export const BOARD_COLUMNS: BoardColumn[] = [
 
 export const STATUS_LABELS: StatusLabel[] = BOARD_COLUMNS.map((col) => col.id);
 export const PRIORITY_LABELS: PriorityLabel[] = ["priority/p0", "priority/p1", "priority/p2", "priority/p3"];
+
+/** Type guard: is `label` one of the allowed `status/*` labels? */
+export function isStatusLabel(label: string): label is StatusLabel {
+  return (STATUS_LABELS as readonly string[]).includes(label);
+}
 export const PROJECT_PREFIX = "project/";
 export const AGENT_PREFIX = "agent/";
 export const OWNER_PREFIX = "owner/";