Refactor: Dismantle MemoryState into semantic domain sub-structs

server/src/api/rest.rs

@@ -38,7 +38,7 @@ pub async fn gate_verify_handler(
 ) -> Result<impl IntoResponse, AppError> {
     let mut found = None;
     let mut to_remove = None;
-    app_state.handler.state.gates.modify(|gates| {
+    app_state.handler.state.env.gates.modify(|gates| {
         if let Some(idx) = gates.iter().position(|g| {
             g.action == q.action
                 && g.target == q.target
@@ -96,7 +96,7 @@ pub async fn gate_set_handler(
         reason: body.reason.clone(),
         timestamp: crate::handlers::utils::now_secs(),
     };
-    app_state.handler.state.gates.modify(|gates| {
+    app_state.handler.state.env.gates.modify(|gates| {
         gates.retain(|g| !(g.action == record.action && g.target == record.target));
         gates.push(record);
     });