import * as Effect from "effect/Effect";import * as SqlClient from "effect/unstable/sql/SqlClient"; export default Effect.gen(function* () {  const sql = yield* SqlClient.SqlClient;  const columns = yield* sql<{ readonly name: string }>`    PRAGMA table_info(projection_threads)  `;   if (!columns.some((column) => column.name === "settled_override")) {    yield* sql`      ALTER TABLE projection_threads      ADD COLUMN settled_override TEXT    `;  }   if (!columns.some((column) => column.name === "settled_at")) {    yield* sql`      ALTER TABLE projection_threads      ADD COLUMN settled_at TEXT    `;  }});