chore: remove dead code and tune frontend chunks

Remove unused production symbols, starter assets, and stale browser tooling; reduce frontend chunk fragmentation.

apps/server/src/classrooms/classroom-template.spec.ts

@@ -1,7 +1,13 @@
-import { CLASSROOM_TEMPLATE_HEADERS } from './classroom-template';
+import { CLASSROOM_TEMPLATE_COLUMNS } from './classroom-template';
 
 describe('classroom import template', () => {
   it('contains only classroom fields used by the product', () => {
-    expect(CLASSROOM_TEMPLATE_HEADERS).toEqual(['教室名', '楼栋', '楼层', '类型', '容量']);
+    expect(CLASSROOM_TEMPLATE_COLUMNS.map(({ header }) => header)).toEqual([
+      '教室名',
+      '楼栋',
+      '楼层',
+      '类型',
+      '容量',
+    ]);
   });
 });

apps/server/src/classrooms/classroom-template.ts

@@ -5,5 +5,3 @@ export const CLASSROOM_TEMPLATE_COLUMNS = [
   { header: '类型', key: 'roomType', width: 10 },
   { header: '容量', key: 'capacity', width: 10 },
 ];
-
-export const CLASSROOM_TEMPLATE_HEADERS = CLASSROOM_TEMPLATE_COLUMNS.map(({ header }) => header);