✓ mid-net-wire
PlayerState · PlayerEvent · Sequence · AckTracker
hand-rolled codec + wraparound-safe seq/ack, zero deps
✓ mid-net-reliable
RetransmitBuffer · RttEstimator
Karn's algorithm, no clock/socket calls, deps: mid-net-wire only
✓ mid-net-transport
Transport trait · LoopbackTransport
zero deps, verified against Unity's INetworkInterface pattern
⚠ mid-net-transport-quinn
native Transport impl
written, unverified — MSRV ~1.85 blocked local compile; see "Build mid-net-transport-quinn" step
✓ connection.rs
Connection<T: Transport>
the real send/poll API a game loop calls
⚠ mid-net-transport-wasm
browser Transport impl
planned — not yet built
✓ ffi.rs
PlayerState/PlayerEvent C ABI
verified: real gcc + real .so — its 18 checks now show in Test Suites below as "ffi-smoke-test (C, real gcc)", not just this static note