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Author	SHA1	Message	Date
Matt Van HornandShuai	73bbe8b268	perf: throttle jsQR camera fallback to a few decodes per second	2026-07-01 17:07:30 +08:00
Matt Van HornandShuai	d024798548	fix: composite transparent QR uploads over white before jsQR decode	2026-07-01 17:07:30 +08:00
Matt Van HornandShuai	b0a679b1c2	fix: decode uploaded TOTP QR images when BarcodeDetector is unavailable ... The TOTP QR reader relied solely on window.BarcodeDetector. On desktop Chrome/Edge (Windows/Linux) that interface exists but has no working backend, so detect() returns an empty array: uploading a valid QR image fell through to "no QR code found" and the camera path bailed to "unsupported" with an empty preview. Add a dependency-free jsQR canvas fallback. decodeTotpQrImage now tries BarcodeDetector first when present, then decodes the image via jsQR before reporting not-found. The camera reader no longer hard-returns "unsupported" when only BarcodeDetector is missing: it starts the camera whenever getUserMedia is available and decodes frames with jsQR, which also lets the preview render. Fixes #276	2026-07-01 17:07:30 +08:00