修复退役样式开发态加载

将退役 CSS 源码过滤调整到 Tailwind 转换前执行
新增 Vite 插件顺序回归测试
补充退役方案与开发态白屏排障记录

scripts/vite-retired-css-plugin.test.ts

@@ -0,0 +1,24 @@
+import type { Plugin } from 'vite';
+import { describe, expect, it } from 'vitest';
+
+import viteConfig from '../vite.config';
+
+async function resolveRetiredCssPlugin() {
+  const resolvedConfig =
+    typeof viteConfig === 'function'
+      ? await viteConfig({ command: 'serve', mode: 'test' })
+      : viteConfig;
+  const plugins = (resolvedConfig.plugins ?? []).flat(Infinity) as Plugin[];
+  return plugins.find(
+    (plugin) => plugin?.name === 'retired-creation-template-css',
+  );
+}
+
+describe('retired creation template CSS plugin', () => {
+  it('runs before Tailwind turns source CSS into a Vite JavaScript module', async () => {
+    const plugin = await resolveRetiredCssPlugin();
+
+    expect(plugin).toBeDefined();
+    expect(plugin?.enforce).toBe('pre');
+  });
+});