Anonymous OSS usage telemetry library with zero third-party deps.
- Send(project, version): fire-and-forget POST to oss.raczylo.com/v1/ping
- Disable() and Wait(timeout) helpers
- Disable via DO_NOT_TRACK, OSS_TELEMETRY_DISABLED, or per-project env
- Failproof: never blocks, never panics, never returns errors
- Hand-written JSON (no encoding/json) and byte-loop validators (no regexp)
- golangci-lint v2 clean, all tests pass with -race
