Function create_phase 

pub(crate) async fn create_phase(
    client: &Client,
    profile_name: &str,
    project_name: &str,
    in_project_databases: &BTreeSet<String>,
    dirty_schemas: &BTreeSet<SchemaQualifier>,
    overlay_objects: &[ObjectRef<'_>],
    target_cluster: &str,
) -> Result<(), CliError>

Phase 2 of the dev rebuild: create overlay databases, schemas, and objects.

Per dirty schema we issue CREATE DATABASE IF NOT EXISTS <overlay_db>, insert a manifest row (so drop_phase can always reach it even if we crash mid-run), then CREATE SCHEMA IF NOT EXISTS. Objects are emitted in dependency order with references rewritten through OverlayTransformer and every IN CLUSTER clause rewritten to target_cluster.