wip: reactive context instead of effect

packages/core/Cargo.toml

@@ -20,6 +20,7 @@ slab = { workspace = true }
 futures-channel = { workspace = true }
 tracing = { workspace = true }
 serde = { version = "1", features = ["derive"], optional = true }
+flume = { version = "0.11.0", default-features = false, features = ["async"]}
 
 
 [dev-dependencies]