Iron Law deviation, stated rather than hidden: these tests passed on the
first run. The silence computation landed in 4669cc3 because neste_frist is
one of Step 17's four cached keys and is derived from the same thresholds --
the plan entangles the two steps, so the code could not be written in the
order the steps are numbered. What this file adds is the boundary evidence:
13/14/15, 6/7/8, 9/10/11, an autoreply that must not move the clock, and the
H9 distinction between no inbound RECORDED and no inbound existing.
Co-Authored-By: Claude <claude-opus-5>
