Matched propagation timing
The preregistered engineering screen passed: yes.
| Processing | Exact match | Original seconds | Integer seconds | New / old |
|---|---|---|---|---|
| Fixed-zero removal | Yes | 4.4003 | 3.9173 | 0.8902 |
| Profiled removal | Yes | 3.1735 | 2.8819 | 0.9081 |
Elapsed 38.22 seconds; charged 4/4 bounds and 4096/4,096 logical steps.
Each implementation ran once per source, with alternating order in one single-thread worker. Compilation and profiler instrumentation are excluded from propagation time. This is a short engineering screen, not a general speed guarantee or an aircraft result. No failed study was retried, and no new scientific uncertainty was established.