Function seed_legacy_rows

tests/session_suite/transcript_backfill.rs:96–119

Seeds legacy rows and clears the backfill marker so the next open re-runs the pass against them (a fresh store marks itself done immediately because it has nothing to backfill).

(
    project: &std::path::Path,
    provider: &str,
    messages: &[SessionMessageRecord],
)

/// the pass against them (a fresh store marks itself done immediately because
/// it has nothing to backfill).
async fn seed_legacy_rows(
    project: &std::path::Path,
    provider: &str,
    messages: &[SessionMessageRecord],
) {
    let db = open_project_session_db(project).await.unwrap();
    assert!(db.upsert_session(&session(provider)).await);
    for message in messages {
        assert!(db.upsert_session_message(message).await);
    }
    drop(db);

    let raw = libsql::Builder::new_local(project_session_db_path(project))
        .build()
        .await
        .unwrap();
    let conn = raw.connect().unwrap();
    conn.execute(
        "DELETE FROM session_schema_migrations WHERE name = 'transcript_facts_backfill'",
        (),
    )
    .await
    .unwrap();
}

async fn marker_version(project: &std::path::Path) -> Option<i64> {
    let raw = libsql::Builder::new_local(project_session_db_path(project))