The QR code on /qr-login was not rendering because it depended on loading
qrcode@1.5.4 from the jsdelivr CDN, which may be blocked in some network
environments.
- Add segno>=1.6.0 (pure-Python QR library, no Pillow needed) to requirements.txt
- Generate QR code as a base64 SVG data URI server-side in the challenge endpoint
- Add qr_code_svg field to CreateChallengeResponse Pydantic model
- Replace canvas+CDN script in qr_login.html with an <img :src="qrCodeSvg">
- Remove the $nextTick/QRCode.toCanvas() client-side rendering block
- Extract QR rendering parameters (_QR_ERROR_LEVEL, _QR_SCALE) as module constants
Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>
The QR login page countdown timer compared the server's UTC expiration
timestamp against the client's local clock, causing the QR code to appear
immediately expired when the client clock was ahead of the server.
Changes:
- Add ttl_seconds field to CreateChallengeResponse (seconds until expiry)
- Frontend countdown now uses relative elapsed time since response was
received, eliminating clock-skew issues
- Mobile app: replace alert-only QR button with actual camera-based
QR code scanner using expo-camera
- Add QRScannerScreen with barcode scanning, permission handling, and
scan area overlay
- Update camera permission description to mention QR code scanning
- Add tests for ttl_seconds computation
Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>
copilot-swe-agent[bot]