[AdaWorldAPI]

OPTIONAL CORE METHOD POINTER, ADMISSION OPEN

Plan: docs/plans/d-bagop-xverweis-polyfill-v1.md

An XVERWEIS-like operation pointer is a DT64 MethodRef / AlgebraRef behavioral reference. It is not an Excel value, not a stored result, and not the coordinate produced by its execution. A lawful operation may return a snapshot/layout/scope-qualified ordinal coordinate for chained property access, with values materialized only on demand. Excel-specific first/last, not-found and spill semantics are consumer adapters. DR routes, DT validates structure/method/guard, Quack lowers admitted execution; no unadmitted Gather or derived mask reuse.

Invariant and boundaries

• DR: version-witnessed coordinate routing, not a Bag-only register or value evaluator.
• DT: immutable class/method interpretation with late ClassView/WideFieldMask fields; historical data replay still requires source snapshots and layout.
• OGAR: normalized, scoped Guid128 correspondence; backsynced AD msDS-ExternalDirectoryObjectId may carry User_{GUID}; distinguish AD objectGUID, sourceAnchor and Entra id.
• Quack / mask-RISC / ndarray: admitted typed/masked folds over borrowed SoA lanes. simd_stride byte LUTs are not a completed cross-table GUID join; no unadmitted Gather/mask reuse.
• POC: one joined logical SAP/PSCustomObject tile with reusable coordinate descriptors, no per-row object hydration; independent oracle, explicit cold/warm timings.
• Outside the first POC: GridCraft formulas and XLSX parity, report-rs workbook convergence, Java runtime, Databricks/DataFusion, Codegraph adapter.

Draft plan only. No production implementation, owner admission, merge, runtime test or deploy is asserted.

Status: document-only architectural correction, reviewed against current source contracts on 2026-11-05.

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[chatgpt-codex-connector]

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-11-05T22:32:19.235907Z	673a8d8	Draft marked ready

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