P1: prefer exact static DataSet membership before fallback

[masarray]

P1 — Static report coverage first

Clean branch from current main after P0 squash merge.

Consumer-side hardening for ARIEC hybrid acquisition:

• includes exact ARIEC CanonicalMemberReference / OriginalMemberReference only when DataSet semantics mark that membership as the primary value
• preserves direct-reference precedence
• preserves fail-closed behavior for duplicate/ambiguous primary membership
• prevents statically reportable parent/FCDA representations from being sent directly to MMS polling merely because the app reference differs from the descriptor value leaf

This PR intentionally contains only the two P1 files; P0 is already merged to main. Paired ARIEC P1 invariants are already merged to ARIEC61850/main.

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