refactor(core): move database schema ownership (#29068)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>

packages/core/src/database/migration.ts

@@ -0,0 +1,58 @@
+export * as DatabaseMigration from "./migration"
+
+import { sql } from "drizzle-orm"
+import { Effect } from "effect"
+import type { EffectDrizzleSqlite } from "@opencode-ai/effect-drizzle-sqlite"
+import { migrations } from "./migration.gen"
+
+type Database = EffectDrizzleSqlite.EffectSQLiteDatabase
+type Transaction = Parameters<Parameters<Database["transaction"]>[0]>[0]
+
+export type Migration = {
+  id: string
+  up: (tx: Transaction) => Effect.Effect<void, unknown>
+}
+
+export function apply(db: Database) {
+  return applyOnly(db, migrations)
+}
+
+export function applyOnly(db: Database, input: Migration[]) {
+  return Effect.gen(function* () {
+    yield* db.run(
+      sql`CREATE TABLE IF NOT EXISTS ${sql.identifier("migration")} (id TEXT PRIMARY KEY, time_completed INTEGER NOT NULL)`,
+    )
+    let completed = new Set(
+      (yield* db.all<{ id: string }>(sql`SELECT id FROM ${sql.identifier("migration")}`)).map((row) => row.id),
+    )
+    if (completed.size === 0) {
+      // Existing installs used Drizzle's migration journal. Seed the new
+      // journal once so TypeScript migrations don't replay old SQL.
+      if (
+        yield* db.get(sql`SELECT name FROM sqlite_master WHERE type = 'table' AND name = ${"__drizzle_migrations"}`)
+      ) {
+        yield* db.run(sql`
+          INSERT OR IGNORE INTO ${sql.identifier("migration")} (id, time_completed)
+          SELECT name, ${Date.now()}
+          FROM ${sql.identifier("__drizzle_migrations")}
+          WHERE name IS NOT NULL
+        `)
+        completed = new Set(
+          (yield* db.all<{ id: string }>(sql`SELECT id FROM ${sql.identifier("migration")}`)).map((row) => row.id),
+        )
+      }
+    }
+
+    for (const migration of input) {
+      if (completed.has(migration.id)) continue
+      yield* db.transaction((tx) =>
+        Effect.gen(function* () {
+          yield* migration.up(tx)
+          yield* tx.run(
+            sql`INSERT INTO ${sql.identifier("migration")} (id, time_completed) VALUES (${migration.id}, ${Date.now()})`,
+          )
+        }),
+      )
+    }
+  })
+}