A native macOS network monitor that renders live traffic as a top-down
neon city: your Mac is downtown, remote orgs are glowing districts, and
traffic is cars of light driving the roads.
Architecture:
- NetworkCityCore: swappable data layer behind a ConnectionSource protocol
(nettop-backed today), plus pure/tested logic — traffic diffing, org
classification (reverse-DNS + CIDR), traffic classes, hub-and-spoke
expansion policy, label anti-overlap, and latency→distance layout.
- NetworkCityApp: SwiftUI + SpriteKit city — auto-expanding districts,
protocol-coloured cars, click-to-inspect panel, and latency-as-distance
(districts glide to their measured RTT).
- nettop-probe: CLI proof of the data layer.
44 tests passing.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
timban
c08fc277a9