Module schema 

SQLite schema definition and migration logic.

Implements the normalized schema from the sqlite-rag-integration spec: documents, chunks, chunks_fts (FTS5 with Porter stemmer), fingerprints, and metadata tables.

Constants

SCHEMA_VERSION

Current schema version for migration tracking.

Functions

check_version

Check if the schema version matches the current version.

initialize

Initialize the database schema and set connection pragmas.