ci(release): run aarch64 linux build on ubuntu-24.04-arm so the sign step can exec the native binary

Author: bordumb

.github/workflows/release.yml

@@ -39,11 +39,10 @@ jobs:
             target: x86_64-unknown-linux-gnu
             asset_name: auths-linux-x86_64
             ext: .tar.gz
-          - os: ubuntu-latest
+          - os: ubuntu-24.04-arm
             target: aarch64-unknown-linux-gnu
             asset_name: auths-linux-aarch64
             ext: .tar.gz
-            cross: true
           - os: macos-latest
             target: aarch64-apple-darwin
             asset_name: auths-macos-aarch64

crates/auths-sdk/src/agent_core.rs

@@ -1,7 +1,15 @@
 //! Re-exports of agent types from `auths-core`.
+//!
+//! NOTE: SSH agent IPC uses Unix domain sockets — the underlying `auths-core::agent::client`
+//! module is `#[cfg(unix)]`-gated. The re-exports below mirror that gate so the SDK
+//! compiles on Windows. `AgentHandle` is cross-platform (no socket dependency) and
+//! stays unconditionally exported.
 
 pub use auths_core::AgentHandle;
+
+#[cfg(unix)]
 pub use auths_core::agent::{
     AgentStatus, add_identity, agent_sign, check_agent_status, remove_all_identities,
 };
+#[cfg(unix)]
 pub use auths_core::api::start_agent_listener_with_handle;