fix: tighten real operations data paths

app/api/settings/join-requests/[id]/route.ts

@@ -64,18 +64,9 @@ export async function PATCH(request: Request, context: RouteContext): Promise<Re
       throw new Error("申请已处理");
     }
 
-    let roleId = readString(body, "roleId");
+    const roleId = readString(body, "roleId");
     if (decision === "approved" && !roleId) {
-      const defaultRoleRows = await transaction
-        .select()
-        .from(roles)
-        .where(and(eq(roles.organizationId, joinRequest.organizationId), eq(roles.key, "caregiver")))
-        .limit(1);
-      const defaultRole = defaultRoleRows[0];
-      if (!defaultRole) {
-        throw new Error("默认角色不存在");
-      }
-      roleId = defaultRole.id;
+      throw new Error("请选择审批角色");
     }
 
     if (decision === "approved") {