[Feature] Investigate and refine "Share to..." functionality

[freedeaths]

Description

The "Share to..." feature needs further investigation and confirmation, particularly regarding WeChat card implementation without SDK and URL encoding handling for non-English characters across different platforms.

Investigation Areas

WeChat Integration

• Research WeChat sharing without official SDK
• Investigate if custom card previews are possible via URL schemes
• Test WeChat's URL parsing and preview generation
• Explore alternative methods for rich card display
• Document limitations and workarounds

URL Encoding for Non-English Characters

• Test URL encoding/decoding across major platforms:
  • WeChat (微信)
  • Weibo (微博)
  • QQ
  • Twitter/X
  • Facebook
  • LinkedIn
  • Telegram
  • WhatsApp

Character Encoding Tests

• Chinese characters (中文)
• Japanese characters (日本語)
• Korean characters (한국어)
• Emoji and special symbols
• Mixed language content

Technical Considerations

• URL encoding standards (RFC 3986)
• Platform-specific URL length limitations
• Fallback strategies for encoding issues
• User agent detection for platform-specific handling

Test Scenarios

1. WeChat Sharing

   • Test direct URL sharing vs custom schemes
   • Verify preview card generation
   • Check character display in shared content

2. Cross-Platform Encoding

   • Share URLs with non-ASCII characters
   • Verify proper decoding on each platform
   • Test edge cases with mixed content

3. Fallback Mechanisms

   • Define behavior when encoding fails
   • Implement graceful degradation
   • User feedback for sharing issues

Expected Deliverables

• Compatibility matrix for each platform
• Implementation recommendations
• Code updates based on findings
• Documentation of platform limitations
• Updated sharing functionality

Research Questions

1. Can WeChat display rich cards without official SDK?
2. Which platforms properly decode non-English URLs?
3. What are the optimal encoding strategies for each platform?
4. Are there universal solutions or platform-specific implementations needed?

Priority

Medium - Important for international user experience and social sharing effectiveness.