J-PCMCI+ two-environment pin

Suite path: conformance/discovery/jpcmci_plus_two_env

Pooled Günther-style multi-environment discovery must report algorithm_id = jpcmci_plus with at least two environments and a context-aware temporal CPDAG (≥2 nodes).

Expected summary

Top-level keys: algorithm_id, min_envs, min_links, min_nodes, notes, require_true_edge_subset, tolerance_class, true_links (8 fields).