Improve RichTextEditor to preserve formatting on paste

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**Enhanced Visual Mode:**
- Add paste event handler that preserves HTML formatting when pasting
- Integrate with shared sanitization configuration for consistent filtering
- Preload sanitization config for optimal performance
- Support for bold, italic, and other basic formatting in visual mode

**Updated Sanitization Config:**
- Add more useful HTML tags: kbd, samp, var, details, summary, colgroup, col
- Add attributes for better table support: start, type for ol
- Add style attributes for more elements: table, ul, ol, li, blockquote, pre, code
- Maintain security while allowing richer content formatting

**User Experience:**
- Users can now paste formatted content (bold, italic, lists, etc.) in visual mode
- Content is automatically sanitized using backend configuration
- Updated help text to reflect new capabilities
- Maintains backward compatibility with plain text input

**Technical Improvements:**
- Async clipboard API support with fallbacks
- Error handling for paste operations
- Consistent sanitization between manual input and paste operations

Resolves issue where pasted formatted content was stripped to plain text in visual mode.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

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This commit is contained in:

Stefan Hardegger

2025-07-23 16:51:50 +02:00

parent 030aac7846

commit d489078721

2 changed files with 69 additions and 4 deletions

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frontend/tsconfig.tsbuildinfo

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