TheHudEstimateIsTheCommitPrice used to fire each shot, then reach into
Zone.PendingShots and overwrite the frozen Tracking field after the fact. Build
now takes a `tracking` parameter (default 100000, matching the old fixed
value) alongside Precision and Accuracy, so this test authors Tracking = 6 up
front like every other frozen shooter stat, with no post-hoc patch loop.
Manually verified M15 (Commit applies PSpread twice) still fails this test
(empirical 0.070 vs forecast 0.126) after the rewrite.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>