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_turns    ADD COLUMN source_proposed_plan_thread_id TEXT  `;   yield* sql`    ALTER TABLE projection_turns    ADD COLUMN source_proposed_plan_id TEXT  `;});