Node.js upgrades WS at /, Go was only at /ws. Now the static file
handler checks for Upgrade header first and routes to WebSocket.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
First step of Go rewrite — separates MQTT ingestion from the Node.js
web server. Single static binary (no CGO) that connects to MQTT
brokers, decodes MeshCore packets, and writes to the shared SQLite DB.
Ported from JS:
- decoder.js → decoder.go (header, path, all payload types, adverts)
- computeContentHash → Go (SHA-256, path-independent)
- db.js v3 schema → db.go (transmissions, observations, nodes, observers)
- server.js MQTT logic → main.go (multi-broker, reconnect, IATA filter)
25 Go tests passing (golden fixtures from production + schema compat).
No existing JS files modified.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>