Iteration 05

Feature 2/8 (bar_sign_markov_flux — whether up/flat/down moves cycle in one rotational direction rather than reverse) COMPLETE — all 16 stages green. This fire finished it: the <=1e-9 oracle parity gate (bit-exact 0.0 over BTCUSDT+ETHUSDT, SHA-locked) via a new SHARED assert_bar_close_oracle helper that the 6 remaining features will reuse; the in-Rust brute-force independent leg (close-comparison signs == the kernel's ln signs over 10000x2 bars); the ADR; the signflux:* mise tasks + slash commands; signflux:check-full GREEN; and a per-feature Attacker+Defender challenge (11 findings, all refuted, documented the three-tier independence model). Batch PR #544 updated to 2 implemented / 0 deferred. Next: feature 3/8 — bar_ramsey_rothman_bicov_lag1 (time-irreversibility: whether recent returns look different played backwards).