v1.28.0

What's New

• LAN Beacon Discovery: UDP broadcast protocol for instant same-network device discovery
• Direct-First Connection: Try LAN first, relay as fallback for lowest latency
• Auth-Aware Matching: Beacon includes token fingerprint for same-user matching
• IP Freshness: Heartbeat includes local IP for always-current Convex records
• Silent Roaming: Seamless transitions between direct and relay