Add complete sharing system for worksheet configurations:
Database Schema:
- New worksheet_shares table with short share IDs (7-char base62)
- Stores worksheetType, config JSON, views, creator IP hash, optional title
- Migration 0021 creates the table
Share ID Generation:
- Cryptographically secure base62 IDs (3.5 trillion combinations)
- Collision detection with retry logic (max 5 attempts)
- Validation function for ID format checking
API Endpoints:
- POST /api/worksheets/share - Creates share, returns URL
- GET /api/worksheets/share/[id] - Retrieves config, increments views
- Uses serializeAdditionConfig() for consistent config formatting
Share Modal:
- Auto-generates share link on open (no button needed)
- Displays QR code for mobile sharing (theme-aware colors)
- Copy to clipboard functionality with visual feedback
- Loading states during generation
Dependencies:
- Added qrcode + @types/qrcode for QR code generation
Config Serialization:
- Share uses same serializeAdditionConfig() as database auto-save
- Ensures version field and structure consistency
- Shared configs match database-saved settings exactly
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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