docs: 补充 Compiler CSS 选项英文文档

Refs #1133

Refs #1134

Author: sonofmagic

website/i18n/en/docusaurus-plugin-content-docs/current/api/interfaces/CompilerCssTransformOptions.md

@@ -0,0 +1,28 @@
+---
+title: "CompilerCssTransformOptions"
+description: "Options for transforming CSS through the core compiler."
+keywords:
+  - "weapp-tailwindcss"
+  - "API"
+  - "compiler"
+  - "CSS"
+  - "TypeScript"
+---
+
+# CompilerCssTransformOptions
+
+Options accepted by `Compiler.transformCss()` and `Compiler.transformCssRoot()`.
+
+## Properties
+
+### finalize?
+
+> **finalize**: `boolean`
+
+Whether to finalize CSS for mini-program output after the style compatibility transform. It defaults to `true` when `snapshot.target` is `"weapp"`; set it to `false` to preserve build-time at-rules.
+
+### isMainChunk?
+
+> **isMainChunk**: `boolean`
+
+Whether this CSS is the main chunk. The remaining properties are inherited from the PostCSS style handler options, including `cssPreflight`, `cssOptions`, `postcssOptions`, `majorVersion`, and `appType`.