docs: add Future — LIN Bus Simulator roadmap section - #14
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LIN has no OS-native virtual bus (unlike CAN's vcan) and no third-party LIN stack in this ecosystem (unlike DDS's CycloneDDS), so a well-designed simulator matters more here than for either. Scopes a phased plan grounded in the current virt::Bus/master::Node/slave::Node/ldf::parser code: a minimal in-process multi-slave simulator with real slave identities and registration-conflict detection (Phase 1), fault injection for wrong checksum/PID/no-response testing (Phase 2), multi-slave schedule conflict modeling (Phase 3), and a stretch-goal cross-process transport that would make this the mechanism for real go-LIN/cpp-LIN/rust-LIN interop testing, mirroring rust-DDS's two-process self-interop pattern (Phase 4). Signed-off-by: Matt Jones <47545907+SoundMatt@users.noreply.github.com>
RELAY v1.13 fixed relay conform to reject --strict placed after the binary path instead of silently ignoring it (the exact bug that made this repo's misordered invocation appear to work before). Flags must precede the positional <binary> argument. Signed-off-by: Matt Jones <47545907+SoundMatt@users.noreply.github.com>
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Summary
lin::virt::Bus(aliasedlin::mock::Bus),master::Node::run()'s schedule-table loop,slave::Node::set_response(), andlin::ldf::DB::schedule()— and identifies the concrete gaps insrc/virtual/bus.cpp(flatresponses_map with silent ID-collision clobbering,send_header()always computing a correct PID/checksum with no fault-injection path, and a strictly in-process transport).vcan) or DDS (CycloneDDS): no OS-native virtual bus, no third-party LIN stack in this ecosystem to test against.sim::ISlaveBehaviorinterface and registration-conflict detection, (2) fault injection (wrong checksum/PID, no response, jitter) via asim::FaultInjectordecorator, (3) multi-slave scheduling conflict modeling (slot overruns, diagnostic ID arbitration), and (4) a stretch-goal cross-process transport (lin::ipc::Busover a Unix domain socket) that would make this the mechanism for real go-LIN/cpp-LIN/rust-LIN interop testing — mirroring rust-DDS's two-process self-interop pattern and the go-DDS/cpp-DDS CycloneDDS-peer harness shape, but explicitly not a prerequisite for the simulator's core dev/test value.Test plan