Add background code migration service (#26652)

packages/opencode/src/effect/app-runtime.ts

@@ -54,6 +54,7 @@ import { SessionShare } from "@/share/session"
 import { SyncEvent } from "@/sync"
 import { Npm } from "@opencode-ai/core/npm"
 import { memoMap } from "@opencode-ai/core/effect/memo-map"
+import { DataMigration } from "@/data-migration"
 
 export const AppLayer = Layer.mergeAll(
   Npm.defaultLayer,
@@ -106,6 +107,7 @@ export const AppLayer = Layer.mergeAll(
   ShareNext.defaultLayer,
   SessionShare.defaultLayer,
   SyncEvent.defaultLayer,
+  DataMigration.defaultLayer,
 ).pipe(Layer.provideMerge(InstanceLayer.layer), Layer.provideMerge(Observability.layer))
 
 const rt = ManagedRuntime.make(AppLayer, { memoMap })