Self-contained handoff doc for a follow-up focused session that fixes#77.
Captures: the two bugs (NPC at walking range never auto-walks; pickup at
walking range overshoots and snaps back), the trace evidence from Step 2's
verification run (cmd=0x0005 speed=-1.84 from ACE), four ranked
root-cause hypotheses (H1 missing BeginServerAutoWalk fire / H2
walk-run-threshold misclassification / H3 negative ForwardSpeed
sign-interpretation / H4 arrival predicate firing too early), the
reproduction recipe with ACDREAM_PROBE_AUTOWALK=1, acceptance criteria,
and the "don't workaround, fix root cause" guardrail.
The auto-walk diagnostic infrastructure already exists from Phase B.6
work — the next session just turns it on and reads the trace.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
