TASK: Global sensitivity on TTE using Sobol (Saltelli sampling), deterministic.

INPUT DATA:
- z0 = 1.00
- Baseline params from BASELINE_CONFIG_v1
- Select exactly 6 uncertain scalar parameters (must exist in params):
  k_L, k_C, k_N, κ (signal exponent), R_ref, α_Q
- Define ±20% uniform ranges around baseline for each.
- Sampling:
  N_base = 512
  Saltelli scheme with seed = 20260201

METHODOLOGY:
1) Generate Saltelli samples (A, B, A_Bi matrices).
2) For each sample, run simulation to get TTE_hours.
3) Compute Sobol first-order S_i and total-order ST_i.

DELIVERABLES:
A) SOBOL_TABLE_v1 (CSV):
   param, S_i, ST_i
B) SOBOL_RANKING_v1 (JSON): params ordered by ST_i descending
C) COMPUTE_LOG_v1 (JSON): N_evals_total, failures_count (must be 0)

VALIDATION:
- failures_count must be 0.
- All S_i and ST_i must lie in [-0.05, 1.05] else FAIL (numerical sanity).

OUTPUT FORMAT:
CSV, JSON, JSON. No prose.