Summary

Add Toutiao/Jinritoutiao (今日头条) platform support for article synchronization.

Changes

• Added Toutiao platform configuration in PLATFORMS array
• Implemented login detection using Toutiao's media info API
• Added content filling logic for Toutiao's rich text editor

Implementation Details

Login Detection:

• Uses https://mp.toutiao.com/mp/agw/media/get_media_info API endpoint
• Parses response.data.media.display_name for username
• Parses response.data.media.https_avatar_url for avatar
• Handles text/plain content-type response (Toutiao returns JSON with text/plain header)

Content Filling:

• Title: Uses textarea[placeholder*="标题"] selector with React-compatible value setter (nativeInputValueSetter)
• Content: Fills into ProseMirror/contenteditable editor with HTML content

Technical Notes

• Toutiao API returns JSON data but with content-type: text/plain, so the extension parses both application/json and text/plain responses
• React state updates require using Object.getOwnPropertyDescriptor(HTMLTextAreaElement.prototype, 'value').set to properly trigger re-renders
• Both input and change events are dispatched for compatibility

Testing

1. Install the browser extension from cose/ directory
2. Log in to Toutiao at https://mp.toutiao.com
3. Open the editor and verify Toutiao shows your account name
4. Select Toutiao for sync and verify title/content are filled correctly