Module graph_migrate 

Graph schema versioning and migration engine.

Stores a (:SchemaVersion) node inside the graph. On open, the code checks the graph version against CURRENT_SCHEMA_VERSION and runs sequential migrations if the graph is behind. Each migration is idempotent.

Version History

• v0: Pre-versioning (no SchemaVersion node)
• v1: Stamp version node (current schema, no data changes)
• v2: Add last_validated_at, decay_rate, embedding_model_version to Memory nodes

Enums

VersionCheck

Result of a schema version check.

Constants

CURRENT_SCHEMA_VERSION

Current schema version that this code expects.

Functions

check_version

Fallback when graph feature is disabled.

effective_confidence

Calculate effective confidence with time-based decay.

run_migrations

Fallback when graph feature is disabled.