Adds the timestamped + verified-write paths on top of the wave 1
write path. Plus a SystemTime → FILETIME helper so callers don't have
to do the 1970→1601 epoch arithmetic by hand.
New
- Session::write_value_at(reference, value, timestamp_filetime) —
port of MxNativeSession.Write2Async (cs:187-209). Delegates to
NmxClient::write2 with the same routing as write_value.
- Session::write_value_secured_at(reference, value, ts, security) —
port of MxNativeSession.WriteSecured2Async (cs:223-248). Uses the
session's options.engine_name as the client name (matches cs:239's
_options.EngineName convention). Single-user secured writes pass
current_user_id == verifier_user_id per R6 verification.
- system_time_to_filetime(SystemTime) -> Result<i64, Error>: converts
via the canonical 11_644_473_600s offset between 1970-01-01 and
1601-01-01. Pre-1970 values map to Configuration::InvalidArgument.
Tests (7 new in mxaccess; total 26)
- write_value_at round-trip via in-memory resolver + hand-rolled server.
- write_value_secured_at round-trip with single-user (same id twice).
- write_value_at propagates non-zero HRESULT as InvalidArgument.
- system_time_to_filetime: Unix-epoch known value
(11_644_473_600 * 10_000_000), +1s offset, +500ms subsecond
conversion, pre-1970 rejection.
One targeted fix: rewrote a doc comment that started a continuation
line with `+ verifier user pair` — clippy parsed `+` as a markdown
list bullet (clippy::doc_lazy_continuation).
Test count delta: 487 -> 494 (+7). All four DoD gates green.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Joseph Doherty
bf95995573