feat: implement asynchronous action call system

- Add async callback support with proper argument passing
- Implement remote action invocation via TCP connection
- Add hello_world_action example demonstrating async communication
- Improve ActionPool with type-safe async processing
- Update client registry for remote action handling
- Enhance ActionContext with better instance management
- Support both local and remote action execution modes

4 files changed, 34 insertions, 20 deletions

diff --git a/crates/vcs_actions/src/actions/local_actions.rs b/crates/vcs_actions/src/actions/local_actions.rs
index 0e210a7..b11a934 100644
--- a/crates/vcs_actions/src/actions/local_actions.rs
+++ b/crates/vcs_actions/src/actions/local_actions.rs
@@ -1,17 +1,25 @@
-use std::net::SocketAddr;
-
 use action_system::{action::ActionContext, action_gen};
+use log::info;
 use tcp_connection::error::TcpTargetError;
 
-#[action_gen(local)]
-pub async fn set_upstream_vault_action(
-    ctx: ActionContext,
-    _upstream: SocketAddr,
-) -> Result<(), TcpTargetError> {
-    if ctx.is_remote() {
-        return Err(TcpTargetError::NotLocal(
-            "Action was not invoked on the local machine".to_string(),
+#[action_gen]
+pub async fn hello_world_action(ctx: ActionContext, _n: ()) -> Result<(), TcpTargetError> {
+    // Ensure the instance is available
+    let Some(instance) = ctx.instance() else {
+        return Err(TcpTargetError::NotFound(
+            "Connection Instance Lost.".to_string(),
         ));
+    };
+
+    if ctx.is_local() {
+        // Invoke on local
+        // Send the message to the server
+        let _ = instance.lock().await.write_text("Hello World!").await;
+    } else if ctx.is_remote() {
+        // Read the message from the client
+        let read = instance.lock().await.read_text().await?;
+        info!("{}", read)
     }
+
     Ok(())
 }
diff --git a/crates/vcs_actions/src/connection/action_service.rs b/crates/vcs_actions/src/connection/action_service.rs
index 9ea5957..0a49953 100644
--- a/crates/vcs_actions/src/connection/action_service.rs
+++ b/crates/vcs_actions/src/connection/action_service.rs
@@ -136,7 +136,10 @@ async fn process_connection(stream: TcpStream, vault: Arc<Vault>, action_pool: A
     };
 
     // Build context
-    let ctx = ActionContext::remote().insert_instance(instance);
+    let ctx: ActionContext = ActionContext::remote().insert_instance(instance);
+
+    // Insert vault into context
+    let ctx = ctx.insert_arc(vault);
 
     // Process action
     let Ok(_result_json) = action_pool
diff --git a/crates/vcs_actions/src/registry/client_registry.rs b/crates/vcs_actions/src/registry/client_registry.rs
index 56acdad..47fd7ee 100644
--- a/crates/vcs_actions/src/registry/client_registry.rs
+++ b/crates/vcs_actions/src/registry/client_registry.rs
@@ -2,13 +2,12 @@ use action_system::{action::ActionContext, action_pool::ActionPool};
 use tcp_connection::error::TcpTargetError;
 
 use crate::{
-    actions::local_actions::register_set_upstream_vault_action,
-    connection::protocol::RemoteActionInvoke,
+    actions::local_actions::register_hello_world_action, connection::protocol::RemoteActionInvoke,
 };
 
 fn register_actions(pool: &mut ActionPool) {
     // Pool register here
-    register_set_upstream_vault_action(pool);
+    register_hello_world_action(pool);
 }
 
 pub fn client_action_pool() -> ActionPool {
@@ -19,13 +18,16 @@ pub fn client_action_pool() -> ActionPool {
     register_actions(&mut pool);
 
     // Add process events
-    pool.set_on_proc_begin(|ctx| Box::pin(on_proc_begin(ctx)));
+    pool.set_on_proc_begin(|ctx, args| Box::pin(on_proc_begin(ctx, args)));
 
     // Return
     pool
 }
 
-async fn on_proc_begin(ctx: &mut ActionContext) -> Result<(), TcpTargetError> {
+async fn on_proc_begin(
+    ctx: &ActionContext,
+    _args: &(dyn std::any::Any + Send + Sync),
+) -> Result<(), TcpTargetError> {
     // Is ctx remote
     let is_remote = ctx.is_remote();
 
@@ -34,7 +36,7 @@ async fn on_proc_begin(ctx: &mut ActionContext) -> Result<(), TcpTargetError> {
     let action_args_json = ctx.action_args_json().clone();
 
     // Get instance
-    let Some(instance) = ctx.instance_mut() else {
+    let Some(instance) = ctx.instance() else {
         return Err(TcpTargetError::Unsupported(
             "Missing ConnectionInstance in current context, this ActionPool does not support this call"
                 .to_string()));
@@ -49,7 +51,8 @@ async fn on_proc_begin(ctx: &mut ActionContext) -> Result<(), TcpTargetError> {
         };
 
         // Send
-        instance.write_msgpack(msg).await?;
+        let mut instance = instance.lock().await;
+        instance.write_msgpack(&msg).await?;
     }
 
     // Return OK, wait for client to execute Action locally
diff --git a/crates/vcs_actions/src/registry/server_registry.rs b/crates/vcs_actions/src/registry/server_registry.rs
index 3ecc103..b449b68 100644
--- a/crates/vcs_actions/src/registry/server_registry.rs
+++ b/crates/vcs_actions/src/registry/server_registry.rs
@@ -1,9 +1,9 @@
 use action_system::action_pool::ActionPool;
 
-use crate::actions::local_actions::register_set_upstream_vault_action;
+use crate::actions::local_actions::register_hello_world_action;
 
 pub fn server_action_pool() -> ActionPool {
     let mut pool = ActionPool::new();
-    register_set_upstream_vault_action(&mut pool);
+    register_hello_world_action(&mut pool);
     pool
 }