chore(scripts): update check-db-state and seed-grade5-chinese scripts

- Update scripts/check-db-state.mjs

- Update scripts/seed-grade5-chinese.ts

scripts/check-db-state.mjs

@@ -22,7 +22,7 @@ async function main() {
     console.log("\n=== class_enrollments 结构 ===");
     const [cols] = await conn.query(`SHOW COLUMNS FROM \`class_enrollments\``);
     console.table(cols);
-  } catch (err) {
+  } catch {
     console.log("class_enrollments 表不存在");
   }
 

scripts/seed-grade5-chinese.ts

@@ -24,13 +24,9 @@ import {
   examQuestions,
   subjects,
   grades,
-  schools,
-  users,
-  usersToRoles,
-  roles,
 } from "../src/shared/db/schema";
 import { createId } from "@paralleldrive/cuid2";
-import { sql, eq, and } from "drizzle-orm";
+import { sql } from "drizzle-orm";
 
 // ============ 类型定义 ============