The one-time corpus normalization, consolidation, and manifest import has finished. Its generated manifests, unresolved JSONL, compatibility contracts, and migration-only normalization tools are no longer part of the active repository.

The sole migration exception is scripts/migrate_product_v4_to_v5.py: a compact, one-way local converter for an existing schema-v4 SQLite database. It validates the converter's declared v4 table and column contract and rebuilds the database from the canonical v5 schema. No v4 schema file, compatibility mapping, or runtime v4 path remains.

Current product changes use exactly one format and two fixed commands:

build/arachne product check-inbox

build/arachne product apply-inbox

Place one plain UTF-8 arachne_batch_v2 JSON object in inbox/. The commands always use inbox/ and database/art-islands.sqlite relative to the repository root; they do not accept path options.

See Product inbox for the current batch shape, create and update semantics, explicit merges, rejected-batch issues, idempotency, and merge hints.