Enrich

The Enrich layer transforms envelopes into governed artifacts: normalization, classification, vectorization, and redaction.

Responsibilities

• Schema validation and versioning
• Metadata extraction (language, PII, provenance)
• Deterministic chunking and embeddings
• Policy-driven redaction

Artifact contract (YAML)

artifact_id: <uuid>
schema_version: content.v2
derived_from: <envelope_id>
pii:
  present: true
  policy: pci.v1
vector_index: ivf-768-d128
chunks:
  - id: c1
    begin: 0
    end: 512

Quality gates

1. Deterministic chunking under fixed seeds
2. Embedding drift monitors
3. Schema evolution with backward-compat checks