feat: printable QR code endpoint for coffee bags#25
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GET /lot/:id/qr returns a printable SVG label with QR code linking to the provenance page, farm name, grade, and weight. Supports ?format=png for data URL output. 3 new tests (42 total passing). Closes Phase 2 Task #6 from ROADMAP.md. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
GET /lot/:id/qr— returns a printable SVG label with QR code linking to the provenance page?format=pngfor data URL output (mobile/embed use)Phase 2 Progress
Covers Task #6: Printable QR code for demo from ROADMAP.md
Test plan
GET /lot/:id/qrreturns valid SVG with<svg>root elementGET /lot/:id/qr?format=pngreturns JSON withqr_imagedata URLGET /lot/nonexistent/qrreturns 404🤖 Generated with Claude Code