[Tecnologic]

cymon-lib 0.2: C++20, interrupt-safe API, DSDL 0.1, UNIMOC-ready

• C++20 baseline (was cxx_std_23 in CMake, C++17 in the README), CMake 3.20.
• Variables are read through const float* instead of std::function: Tick()
  is allocation-free, lock-free and free of function pointers, so it can run
  in a zero-latency interrupt. No heap use left in the library.
• Atomic capture state (Idle/Configured/Armed/Triggered/Complete) as the
  contract between Tick() and the Cyphal thread; RequestTrigger() and
  TakeTriggerEvent() for cross-node triggering.
• Sample period rounded to a decimation of the tick period; the trigger is
  evaluated only after the pre-trigger part is recorded.
• UNIMOC naming (PascalCase methods), .clang-format and .clang-tidy rules;
  clean under the UNIMOC warning set with -Werror.
• DSDL 0.1 replaces 1.0 (the 1.0 files lacked @extent/@Sealed and did not
  compile); new CaptureState, Error and TriggerMode.IMMEDIATE.
• scripts/check_dsdl.sh: pydsdl/Nunavut C generation plus a compile of the
  integration guide example; CI runs it with GCC and Clang builds, tests,
  clang-tidy and clang-format 22.1.1.
• README rewritten; docs/integration.md describes the firmware side.

Co-Authored-By: Claude Opus 5.5 noreply@anthropic.com
Claude-Session: https://claude.ai/code/session_01AKjxMYUjfvU5kDumYNNQY8