02 — Contract Divergence Map

Version inventory (v_rp_contract_version_inventory)

view	version	nodes	axes	grouping	substrate	reliability	recommended	risk
v_rp_universal_node_ui_contract	v1	87	5	✗	✓	✗	DEPRECATE_KEEP	hardcoded UNION ALL (7 legs); no grouping; no reliability
v_rp_universal_node_ui_contract_v2	v2	87	5	✓	✓	✗	INTERIM	adds PXT grouping + empty-substrate overlay
v_rp_universal_node_ui_contract_reliability	reliability	87	5	✓	✓	✓	CURRENT	reliability_label/source_scope/confidence + synthetic detection

Lineage: reliability ⊃ v2 ⊃ v1. v2 = v1 + v_rp_pxt_grouping_surface (GROUPED overlay) + v_rp_empty_substrate_classification. reliability = v2 + axis_registry LEFT JOIN (synthetic detection) + label model + warning_flags_v2.

Divergence detector (v_rp_contract_divergence_detector)

Per-node FULL JOIN across all three versions on (node_code, axis_code):

• 77 CONSISTENT
• 10 DRILL_DIVERGENCE_V1_V2 — the AX-PXT grouped nodes where v1 emits DRILL/SHOW_SUBSTRATE but v2/reliability emit DRILL_GROUPS. v1 is stale for these; reliability is correct.
• 0 v2↔reliability drill divergences (reliability inherits v2 drill semantics).
• 0 NODE_MISSING (all three carry the full 87).

Consumer risk & decision

• v1 is the hardcode source (UNION ALL, 7 literal legs across 5 axes) and is drill-stale on 10 nodes → mark DEPRECATE_KEEP (retain for lineage, do not consume).
• reliability = current → UI must consume via the _current alias (Phase 3), never v1.
• No ambiguity remains about which contract is stale vs current.