Was
SOLVED in v1 with 14-field NODE_SCHEMA.
Now
Two-layer schema (Will v4). Layer 1: 16 immutable core fields (the Meridian protocol). Layer 2: 20+ extensible fields (personal only, null defaults, never emitted). Layer 1 never changes. Layer 2 grows without migration.
Layer 1
id, schema_version, vector[1024], text, title, node_type, source_id, collection, date_added, confidence_score, gravity_score, edge_weight, mechanism, situation, when_not, reasoning_trace_id.
Layer 2
framework_id, parent_id, validation_count, error_count, confidence_history (JSON), emission_status, tags, domain_path, novelty_score, agent_id, review_flag, notes, generation, creator_id, inherited_from, generational_notes.
Migration
Q's TAO: 6,797 nodes need remapping from NODE_SCHEMA (14 fields) to Layer 1 (16 fields). Add: schema_version, gravity_score, edge_weight, reasoning_trace_id. Rob: 16,717 holons need full schema alignment after embedding migration.
Owner
Q (migration) WILL (spec)