feat(platform-wallet)!: shared ThreadRegistry for coordinator lifecycle + shutdown UAF/data-loss fixes

packages/rs-dash-async/Cargo.toml

@@ -13,6 +13,8 @@ tracing = "0.1.41"
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
 tokio = { version = "1.40", features = ["rt", "rt-multi-thread", "time", "net"] }
+tokio-util = { version = "0.7.12" }
+futures = { version = "0.3.30" }
 
 [dev-dependencies]
-tokio = { version = "1.40", features = ["macros", "rt-multi-thread", "sync"] }
+tokio = { version = "1.40", features = ["macros", "rt-multi-thread", "sync", "time"] }

packages/rs-dash-async/src/lib.rs

@@ -2,7 +2,18 @@
 //!
 //! Provides [`block_on`] -- a function that bridges async futures into sync code,
 //! handling multiple tokio runtime flavors (no runtime, current-thread, multi-thread).
+//!
+//! Also provides [`ThreadRegistry`] — a shared lifecycle engine for background
+//! OS-thread / tokio-task workers (start, cancel, weight-ordered quiesce +
+//! join, orphan reap).
 
 mod block_on;
+#[cfg(not(target_arch = "wasm32"))]
+mod registry;
 
 pub use block_on::{block_on, AsyncError};
+#[cfg(not(target_arch = "wasm32"))]
+pub use registry::{
+    ClearingGuard, DrainHook, RegistryKey, ShutdownReport, ShutdownWeight, ThreadRegistry,
+    WorkerConfig, WorkerStatus, DEFAULT_JOIN_BUDGET, DEFAULT_REAP_BACKSTOP,
+};