Manufacturing temporal effect conformance fixture

Suite path: conformance/manufacturing/temporal_pressure_defect

Synthetic lagged SCM: defect_t = 0.9 * pressure_{t-1}.

Used by Rust manufacturing_temporal test and Python examples.

Expected summary

Top-level keys: edges, expected_ate, horizon_steps, n, note, outcome, pulse_active_level, sampling_interval_ns, scm, tolerance_class, treatment, treatment_lag, true_effect_per_unit (13 fields).