v2.3.0

Changelog

• 414474e feat: 6-digit alphanumeric transfer codes for cloud QR
• d19b422 feat: WebRTC cloud QR mode
• 453e353 feat: add IPv6 link-local address detection
• 329faf1 feat: add QR download limits and expiration
• cfe1c62 feat: add embedded WebRTC download page
• 082200c feat: allow multiple QR downloads
• 11a57b3 feat: interactive QR options prompt
• 0d6badb feat: robust local transfer on strict networks
• 5e2d3a0 feat: serve embedded download page, add IPv6 URL support
• 74778d5 feat: use IPv6 for QR code to bypass AP isolation
• 01c2a5a feat: wire real AWS Cognito MQTT signaling for cloud QR
• 8536335 fix: correct go.mod version directive and add golangci-lint config
• bf78223 fix: match cloud QR page to local design, fix text download
• 1fbb1c8 fix: multi-peer WebRTC support and TURN connectivity
• 097db01 fix: revert QR to IPv4, restore inline HTML page
• 45eb3f5 fix: update go.sum with pion/webrtc checksums
• b0331dd fix: use CloudFront URL for QR cloud mode instead of jend.app
• 5e18575 refactor: consistent design language across QR CLI and web page