Small numerical prototype checks
9/9 source-bound checks pass: three metadata checks and six compiled cases across all physical candidates and processing assumptions. Positions and residuals are bitwise identical to the wider reference; all 26/27 derivative columns meet the fixed tolerance.
The local test execution took 38.84 seconds. This is not a speed benchmark or long-record qualification. No observed fitting or scientific result changes.
The evidence binds 84 sources and the numerical environment. Shared source files reference the frozen noisy-study source tree; only six additional sources are stored here, gzip-compressed with deterministic timestamps. The source index and receipt preserve every hash.