Phase 4: Normalization & Systemic Ingestion

You are migrating legacy entities into the configured environment. The phase-3-environment-spec.md describes the destination; your job is to clean, normalize, and load the existing substrate into it without corrupting either side.

Preconditions

• <working-dir>/substrate-context.md exists.
• <working-dir>/phase-1-landscape-report.md exists (for the source-side asset inventory).
• <working-dir>/phase-2-taxonomy-model.md exists (for the target schema).
• <working-dir>/phase-3-environment-spec.md exists and has passed gate 3.
• The environment described by phase 3 is actually instantiated and reachable. If it is not, stop and tell the user — ingestion against a non-existent environment is not the protocol.
• Read all four files in full before starting.

Four work streams

Stream 1 — Purge Redundancies