cratefield-adapter-sqlite

The [Database] port over rusqlite (bundled SQLite) for the Factory Zero harness. Native only — never compiled to wasm. Used by every module test and by cratefield-testing, and viable for a single-node self-hosted deployment (ADR 0004).

use cratefield_adapter_sqlite::SqliteDatabase;

let db = SqliteDatabase::in_memory()?;          // or ::open("venture.db")
db.apply_migrations("email-signup", &migrations)?; // tracked in harness_migrations
// ... through Arc<dyn Database> as usual

• batch runs all statements in one transaction (atomic).
• apply_migrations(module, &[SqlMigration]) is idempotent: each migration is tracked under <module>/<id> in a harness_migrations table and applied in its own transaction.
• The rusqlite connection is !Sync, so it lives behind a mutex; this is connection guarding, not request state (see the workspace clippy.toml policy).