fix(opencode): preserve request logger context (#33381)

packages/opencode/src/server/routes/instance/httpapi/server.ts

@@ -281,7 +281,7 @@ export function createRoutes(
     ]),
     Layer.provide(LayerNode.buildLayer(app)),
     Layer.provide(Layer.succeed(CorsConfig)(corsOptions)),
-    Layer.provide(Observability.layer),
+    Layer.provideMerge(Observability.layer),
   )
 }