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

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

packages/core/src/database/database.ts

@@ -0,0 +1,60 @@
+export * as Database from "./database"
+
+import { EffectDrizzleSqlite } from "@opencode-ai/effect-drizzle-sqlite"
+import { layer as sqliteLayer } from "#sqlite"
+import { Context, Effect, Layer } from "effect"
+import { Global } from "../global"
+import { Flag } from "../flag/flag"
+import { isAbsolute, join } from "path"
+import { DatabaseMigration } from "./migration"
+import { InstallationChannel } from "../installation/version"
+
+const makeDatabase = EffectDrizzleSqlite.makeWithDefaults()
+type DatabaseShape = Effect.Success<typeof makeDatabase>
+
+export interface Interface {
+  db: DatabaseShape
+}
+
+export class Service extends Context.Service<Service, Interface>()("@opencode/v2/storage/Database") {}
+
+export const layer = Layer.effect(
+  Service,
+  Effect.gen(function* () {
+    const db = yield* makeDatabase
+
+    yield* db.run("PRAGMA journal_mode = WAL")
+    yield* db.run("PRAGMA synchronous = NORMAL")
+    yield* db.run("PRAGMA busy_timeout = 5000")
+    yield* db.run("PRAGMA cache_size = -64000")
+    yield* db.run("PRAGMA foreign_keys = ON")
+    yield* db.run("PRAGMA wal_checkpoint(PASSIVE)")
+    yield* DatabaseMigration.apply(db)
+
+    return { db }
+  }).pipe(Effect.orDie),
+)
+
+export function layerFromPath(filename: string) {
+  return layer.pipe(Layer.provide(sqliteLayer({ filename })))
+}
+
+export function path() {
+  if (Flag.OPENCODE_DB) {
+    if (Flag.OPENCODE_DB === ":memory:" || isAbsolute(Flag.OPENCODE_DB)) return Flag.OPENCODE_DB
+    return join(Global.Path.data, Flag.OPENCODE_DB)
+  }
+  if (
+    ["latest", "beta", "prod"].includes(InstallationChannel) ||
+    process.env.OPENCODE_DISABLE_CHANNEL_DB === "1" ||
+    process.env.OPENCODE_DISABLE_CHANNEL_DB === "true"
+  )
+    return join(Global.Path.data, "opencode.db")
+  return join(Global.Path.data, `opencode-${InstallationChannel.replace(/[^a-zA-Z0-9._-]/g, "-")}.db`)
+}
+
+export const defaultLayer = Layer.unwrap(
+  Effect.gen(function* () {
+    return layerFromPath(path())
+  }),
+).pipe(Layer.provide(Global.defaultLayer))