What happened this firing
Feature 5/8 (bar_cox_stuart_trend_z — a robust trend test: are later prices systematically higher or lower than earlier ones?) COMPLETE — all 16 stages green; 5/8 done, 0 deferred. The Cox-Stuart sign test, z-standardised: S+ counts how many second-half closes exceed their first-half partner, z=(S+-m/2)/sqrt(m/4); at n=200 that's (S+-50)/5 — an integer-count closed form, so BIT-EXACT vs the numpy oracle (residual 0). This fire built the whole feature: oracle SSoT + BTC/ETH fixtures (caught + fixed a numpy np.float64() repr bug in the generator), the kernel + 7 property tests (z=+/-10 on monotone up/down, z=0 trendless, rank-invariant under positive rescale), the 9-tuple wiring, forward-only schema across all 4 sources, the bit-exact parity gate, an in-Rust brute-force S+ recount, the ADR, the coxstuart:* mise tasks + slash commands, coxstuart:check-full GREEN, and a per-feature Attacker+Defender challenge (7 findings, all refuted, no code change — three-tier independence confirmed; FOSS randtests honestly omitted as non-hermetic + different normalization). Batch PR #544 updated to 5 implemented / 0 deferred. Next: feature 6/8 — bar_groeneveld_meeden_b3_skewness (a robust, outlier-resistant skewness of recent returns around the median).