refactor(core): narrow the 1.0 public API

tines-core/tests/public_api.rs

@@ -0,0 +1,26 @@
+//! Compile probe for the tines-core 1.0 public surface (Task 5).
+//!
+//! Every `use` path here must keep resolving against `tines_core`. A future
+//! change that removes any of these items from the public API — or drops a
+//! crate-root re-export that Task 5 established — fails to build here, which
+//! is exactly what the probe guards against. CI compiles it on the workspace
+//! both with and without the default (alloc) features.
+#![allow(unused_imports)]
+
+// Re-exported at the crate root by Task 5's `tines_core::lib`.
+use tines_core::consts::WIRE_VERSION;
+use tines_core::{
+    belief::{BeliefPolicy, LatestWins, SelfFirst},
+    node::{Node, ObserveError},
+    observation::{
+        Dest, NodeId, Observation, ObservationId, Payload, SigAlgo, Signature, Tick, Topic,
+    },
+    store::{Store, StoreError, TrimPolicy},
+    transport::{Event, FrameBuf, SendError, Transport},
+    DropReason, NodeEvent,
+};
+use tines_core::{consts, frame_sender};
+
+// `MemStore` lives behind the `alloc` feature.
+#[cfg(feature = "alloc")]
+use tines_core::MemStore;