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fix(qr-login): render QR code server-side using segno instead of CDN JS library

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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>
This commit is contained in:
copilot-swe-agent[bot]
2026-03-18 08:34:22 +00:00
parent 6727253958
commit a8eb6504ac
3 changed files with 39 additions and 15 deletions
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requirements.txt
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@@ -60,3 +60,4 @@ sentry-sdk[fastapi,celery,sqlalchemy]>=2.20.0,<3.0.0
strawberry-graphql[fastapi]>=0.243.0,<1.0.0
aiofiles>=24.1.0 # Asynchronous file I/O support
segno>=1.6.0 # Pure-Python QR code generator (server-side rendering, no Pillow dependency)