v1.5.0 — Wear OS network sparklines

What's new in v1.5.0

Wear OS network RX/TX sparklines

• Added rxHistoryBuffer / txHistoryBuffer (60-sample HistoryBuffer) to WearViewModel
• Live loop computes bytes/sec delta each 10 s via TrafficStats.totalRxBytes() / totalTxBytes() (no permissions needed)
• NetworkSparklineCard composable: ↓ RX in primary colour, ↑ TX in secondary colour — each with WearSparklineChart 24dp
• Card appears after 2+ live ticks (~20 s)
• Phone↔Wear parity: phone has CPU/RAM/Network/Battery sparklines; Wear now has Battery/RAM/Network

Version bumps

• Phone: versionCode 103→104 / 1.4.0→1.5.0
• Wear: versionCode 24→25 / 1.1.0→1.5.0