The JavaScript QR code fallback was limited to Version 5 (106 bytes max),
but WireGuard configs are typically 200-250 bytes. This caused QR code
generation to fail when the backend qrencode binary is not installed.
Changes:
- Auto-select optimal QR version (1-20) based on data length
- Support up to 858 bytes (Version 20)
- Proper Reed-Solomon error correction with dynamic generator polynomials
- Data interleaving for multiple EC blocks
- Alignment patterns for all versions
- Version info encoding for version 7+
- Quiet zone in SVG output
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
CyberMind-FR
2f16875c4b