Fixes for build ready

src/actions/tags/isDescendant.ts

@@ -2,16 +2,21 @@
 
 import { prisma } from "@/lib/prisma";
 
-export async function isDescendant(tagId: string, possibleAncestorId: string) {
+export async function isDescendant(tagId: string, possibleAncestorId: string): Promise<boolean> {
   // Walk upwards from possibleAncestorId; if we hit tagId, it's a cycle.
   let current: string | null = possibleAncestorId;
+  
   while (current) {
     if (current === tagId) return true;
-    const t = await prisma.artTag.findUnique({
-      where: { id: current },
-      select: { parentId: true },
-    });
+
+    const t: { parentId: string | null } | null =
+      await prisma.artTag.findUnique({
+        where: { id: current },
+        select: { parentId: true },
+      });
+
     current = t?.parentId ?? null;
   }
+
   return false;
 }