refactor(server): canonicalize service API (#31049)

packages/core/src/session/execution/local.ts

@@ -31,3 +31,5 @@ export const layer = Layer.effect(
     })
   }),
 )
+
+export const defaultLayer = layer.pipe(Layer.provide(SessionStore.defaultLayer))

packages/core/src/session/store.ts

@@ -58,3 +58,5 @@ export const layer = Layer.effect(
     })
   }),
 )
+
+export const defaultLayer = layer.pipe(Layer.provide(Database.defaultLayer))