import * as Effect from "effect/Effect";import * as SqlClient from "effect/unstable/sql/SqlClient"; export default Effect.gen(function* () {  const sql = yield* SqlClient.SqlClient;   yield* sql`    ALTER TABLE projection_thread_proposed_plans    ADD COLUMN implemented_at TEXT  `;   yield* sql`    ALTER TABLE projection_thread_proposed_plans    ADD COLUMN implementation_thread_id TEXT  `;});