Add ReloadUserConfig to tui_app_server (#15806)

- Adds ReloadUserConfig to `tui_app_server`

codex-rs/tui_app_server/src/app.rs

@@ -2183,6 +2183,10 @@ impl App {
                     .await?;
                 Ok(true)
             }
+            AppCommandView::ReloadUserConfig => {
+                app_server.reload_user_config().await?;
+                Ok(true)
+            }
             AppCommandView::OverrideTurnContext { .. } => Ok(true),
             _ => Ok(false),
         }

codex-rs/tui_app_server/src/app_server_session.rs

@@ -5,6 +5,8 @@ use codex_app_server_client::TypedRequestError;
 use codex_app_server_protocol::Account;
 use codex_app_server_protocol::AuthMode;
 use codex_app_server_protocol::ClientRequest;
+use codex_app_server_protocol::ConfigBatchWriteParams;
+use codex_app_server_protocol::ConfigWriteResponse;
 use codex_app_server_protocol::GetAccountParams;
 use codex_app_server_protocol::GetAccountRateLimitsResponse;
 use codex_app_server_protocol::GetAccountResponse;
@@ -608,6 +610,24 @@ impl AppServerSession {
             .wrap_err("skills/list failed in app-server TUI")
     }
 
+    pub(crate) async fn reload_user_config(&mut self) -> Result<()> {
+        let request_id = self.next_request_id();
+        let _: ConfigWriteResponse = self
+            .client
+            .request_typed(ClientRequest::ConfigBatchWrite {
+                request_id,
+                params: ConfigBatchWriteParams {
+                    edits: Vec::new(),
+                    file_path: None,
+                    expected_version: None,
+                    reload_user_config: true,
+                },
+            })
+            .await
+            .wrap_err("config/batchWrite failed while reloading user config in app-server TUI")?;
+        Ok(())
+    }
+
     pub(crate) async fn thread_realtime_start(
         &mut self,
         thread_id: ThreadId,