@xyo-network/xl1-statement-graph-engine

Backing-neutral runtime contracts for incrementally materializing the XYO Statement Graph.

The extracted core now owns the clock contract that orders every engine backing, the lossless mutable graph state and mutation sink, incremental transaction application through the canonical gates and reducer, and a backing-neutral query/viewer surface over canonical graph records. StatementClock reads immutable finalized positions; SequencedStatementClock additionally assigns positions for local append-only backings. The entire package contains no vocabulary, storage, actor, or chain I/O.

Claim identity is (source, subject, objectHash). The engine preserves subject on records and applied events and maintains both practical access orders: source-owned [source, subject, objectHash] state and subject-centric [subject, source, objectHash] state across all sources. Subject-aware queries assign the subject no consent, control, or authority semantics.

The normative acceptance gates and lifecycle reducer remain in @xyo-network/xl1-statement-graph-protocol; this package composes those primitives without duplicating their semantics.

Registry-backed Edge cutover completed against 0.3.0: its production adapter now applies complete abstract transactions here, mirrors canonical mutation records into its existing product projections, and differentially tests that real adapter against the canonical batch fold. Its frame-aware walker remains local by design.

The old Edge @xyo-network/xl1-statement-engine facade has been retired. Edge-specific capability records, product views, lexicon mounts, frames, and Express transport remain downstream concerns and are not dependencies of this backing-neutral engine.

License

LGPL-3.0-only © XY Labs / XYO Foundation