Remove unused resolver

packages/core/types/src/services/database/index.ts

@@ -1,3 +1,2 @@
 export * from "./database";
 export * from "./database-models";
-export * from "./resolver";

packages/core/types/src/services/library.ts

@@ -1,6 +1,16 @@
 import { Effect, Option, Stream } from "effect";
 import type { Album, AlbumId, Artist, ArtistId } from "../model";
-import type { NonExistingArtistReferenced } from "./database";
+
+/**
+ * Error that is thrown when an album references an artist that does not exist.
+ */
+export class NonExistingArtistReferenced extends Error {
+  constructor(albumName: string, artistId: ArtistId) {
+    super(
+      `The artist with ID "${artistId}" referenced by the album "${albumName}" does not exist`,
+    );
+  }
+}
 
 /**
  * Detail of an artist, including their albums.

packages/services/bootstrap-runtime/src/runtime.ts

@@ -3,7 +3,6 @@ import { AppInitLive } from "@echo/services-app-init";
 import { MainLive } from "@echo/services-bootstrap";
 import { LibraryLive } from "@echo/services-library";
 import { PlayerLive } from "@echo/services-player";
-import { EntityResolverLive } from "@echo/services-resolver";
 import { Layer, ManagedRuntime } from "effect";
 import { globalValue } from "effect/GlobalValue";
 
@@ -16,7 +15,6 @@ export const getOrCreateRuntime = () =>
     ManagedRuntime.make(
       Layer.mergeAll(AppInitLive, AddProviderWorkflowLive, LibraryLive).pipe(
         Layer.provideMerge(PlayerLive),
-        Layer.provideMerge(EntityResolverLive),
         Layer.provideMerge(MainLive),
       ),
     ),