split into workspace: poc-memory and poc-daemon subcrates

poc-daemon (notification routing, idle timer, IRC, Telegram) was already
fully self-contained with no imports from the poc-memory library. Now it's
a proper separate crate with its own Cargo.toml and capnp schema.

poc-memory retains the store, graph, search, neuro, knowledge, and the
jobkit-based memory maintenance daemon (daemon.rs).

Co-Authored-By: ProofOfConcept <poc@bcachefs.org>

poc-memory/src/neuro/mod.rs

@@ -0,0 +1,29 @@
+// Neuroscience-inspired memory algorithms, split by concern:
+//
+//   scoring  — pure analysis: priority, replay queues, interference, plans
+//   prompts  — agent prompt generation and formatting
+//   rewrite  — graph topology mutations: differentiation, closure, linking
+
+mod scoring;
+mod prompts;
+mod rewrite;
+
+// Re-export public API so `neuro::` paths continue to work.
+
+pub use scoring::{
+    replay_queue, detect_interference,
+    consolidation_plan, format_plan,
+    daily_check,
+};
+
+pub use prompts::{
+    load_prompt,
+    consolidation_batch, agent_prompt,
+};
+
+pub use rewrite::{
+    refine_target, LinkMove,
+    differentiate_hub,
+    apply_differentiation, find_differentiable_hubs,
+    triangle_close, link_orphans,
+};