feat: Passwordless cross-device authentication

- Arkitektur: docs/auth/passwordless-architecture.md
- Backend: iom/quixzoom-auth-service/ (FastAPI + Redis)
- Webb: quixzoom-market-pages/se/login/ (QR-kod + polling)
- App: iom/quixzoom-app/src/features/auth/ (push + deep links)

Flöde: QR-kod → app-godkännande → webb-inloggad

landvex-admin-v2/node_modules/fontkit/src/tables/sbix.js

@@ -0,0 +1,17 @@
+import * as r from 'restructure';
+
+let ImageTable = new r.Struct({
+  ppem: r.uint16,
+  resolution: r.uint16,
+  imageOffsets: new r.Array(new r.Pointer(r.uint32, 'void'), t => t.parent.parent.maxp.numGlyphs + 1)
+});
+
+// This is the Apple sbix table, used by the "Apple Color Emoji" font.
+// It includes several image tables with images for each bitmap glyph
+// of several different sizes.
+export default new r.Struct({
+  version: r.uint16,
+  flags: new r.Bitfield(r.uint16, ['renderOutlines']),
+  numImgTables: r.uint32,
+  imageTables: new r.Array(new r.Pointer(r.uint32, ImageTable), 'numImgTables')
+});