Convert Markdown to Rich Text Format for TextEdit & WordPad

# API Client Architecture
**System:** High-Throughput Tokenizer | **Language:** TypeScript

---

## 🛠️ Implementation Details
Refer to the official specification at [CommonMark Specification](https://commonmark.org).

```typescript
export interface RtfConfig {
  defaultFont: 'Calibri' | 'Arial';
  monoFont: 'Consolas' | 'Courier New';
  fontSizeHalfPoints: number;
}
```

- Bullet 1: Clean AST separation
- Bullet 2: Zero external network requests

{\rtf1\ansi\ansicpg1252\deff0\nouicompat\deflang1033
{\fonttbl{\f0\fnil\fcharset0 Calibri;}{\f1\fnil\fcharset0 Consolas;}{\f2\fnil\fcharset0 Arial;}}
{\colortbl ;\red15\green23\blue42;\red79\green70\blue229;\red51\green65\blue85;\red241\green245\blue249;\red226\green232\blue240;}
\viewkind4\uc1\pard\cf1\f0\fs22
\pard\sb240\sa120{\b\fs44\cf2 API Client Architecture}\par\pard
\pard\sb60\sa60 {\b System:\b0} High-Throughput Tokenizer | {\b Language:\b0} TypeScript\par
\pard\par
\pard\brdrb\brdrs\brdrw10\brsp20 \par\pard\par
\pard\par
\pard\sb200\sa100{\b\fs34\cf2 \u-10179?\u-8480?\u-497? Implementation Details}\par\pard
\pard\sb60\sa60 Refer to the official specification at {\field{\*\fldinst HYPERLINK "https://commonmark.org"}{\fldrslt\cf2\ul CommonMark Specification\cf1\ul0}}.\par
\pard\par
\pard\fi0\li360\ri360\sb120\sa120\shading10000\cbpat4{\f1\fs19\cf3 export interface RtfConfig \{\line
  defaultFont: 'Calibri' | 'Arial';\line
  monoFont: 'Consolas' | 'Courier New';\line
  fontSizeHalfPoints: number;\line
\}}\pard\par
\pard\par
\pard\fi-360\li720\sb40\sa40\bullet\tab Bullet 1: Clean AST separation\par\pard
\pard\fi-360\li720\sb40\sa40\bullet\tab Bullet 2: Zero external network requests\par\pard
\pard\par
}