Chamber Specification
Invariant: S(H) = ancestry correlation integral (monotone accumulation)
Falsifier: Utility realized before S ≥ S_crit
Expected Signature: Delayed onset + hysteresis (C_u) — gradual admissibility
Coupling Rule: τ admissible iff S_t ≥ S_crit (no collapse, gated realization)
Utility: Shared EMA threshold (k=8 consecutive steps above U_crit)