Expose MCP server info as part of server status (#24698)

# Summary

Expose MCP server info via App Server (when available) so apps can
render a richer MCP experience

codex-rs/app-server/README.md

@@ -216,7 +216,7 @@ Example with notification opt-out:
 - `mcpServer/oauth/login` — start an OAuth login for a configured MCP server; returns an `authorization_url` and later emits `mcpServer/oauthLogin/completed` once the browser flow finishes.
 - `tool/requestUserInput` — prompt the user with 1–3 short questions for a tool call and return their answers (experimental).
 - `config/mcpServer/reload` — reload MCP server config from disk and queue a refresh for loaded threads (applied on each thread's next active turn); returns `{}`. Use this after editing `config.toml` without restarting the server.
-- `mcpServerStatus/list` — enumerate configured MCP servers with their tools and auth status, plus resources/resource templates for `full` detail; supports optional `threadId` and cursor+limit pagination. If `threadId` is omitted, the server reads from the latest global config directly. If `detail` is omitted, the server defaults to `full`.
+- `mcpServerStatus/list` — enumerate configured MCP servers with their tools, auth status, server info, plus resources/resource templates for `full` detail; supports optional `threadId` and cursor+limit pagination. If `threadId` is omitted, the server reads from the latest global config directly. If `detail` is omitted, the server defaults to `full`.
 - `mcpServer/resource/read` — read a resource from a configured MCP server by optional `threadId`, `server`, and `uri`, returning text/blob resource `contents`. If `threadId` is omitted, the server reads from the latest MCP config directly.
 - `mcpServer/tool/call` — call a tool on a thread's configured MCP server by `threadId`, `server`, `tool`, optional `arguments`, and optional `_meta`, returning the MCP tool result.
 - `windowsSandbox/setupStart` — start Windows sandbox setup for the selected mode (`elevated` or `unelevated`); accepts an optional absolute `cwd` to target setup for a specific workspace, returns `{ started: true }` immediately, and later emits `windowsSandbox/setupCompleted`.

codex-rs/app-server/src/request_processors/mcp_processor.rs

@@ -276,6 +276,7 @@ impl McpRequestProcessor {
         .await;
 
         let McpServerStatusSnapshot {
+            server_infos,
             tools_by_server,
             resources,
             resource_templates,
@@ -315,6 +316,7 @@ impl McpRequestProcessor {
             .iter()
             .map(|name| McpServerStatus {
                 name: name.clone(),
+                server_info: server_infos.get(name).cloned(),
                 tools: tools_by_server.get(name).cloned().unwrap_or_default(),
                 resources: resources.get(name).cloned().unwrap_or_default(),
                 resource_templates: resource_templates.get(name).cloned().unwrap_or_default(),

codex-rs/app-server/tests/suite/v2/mcp_server_status.rs

@@ -20,6 +20,7 @@ use codex_core::config::set_project_trust_level;
 use codex_protocol::config_types::TrustLevel;
 use pretty_assertions::assert_eq;
 use rmcp::handler::server::ServerHandler;
+use rmcp::model::Implementation;
 use rmcp::model::JsonObject;
 use rmcp::model::ListResourceTemplatesResult;
 use rmcp::model::ListResourcesResult;
@@ -99,6 +100,13 @@ url = "{mcp_server_url}/mcp"
             .map(|tool| tool.name.as_str()),
         Some("look-up.raw")
     );
+    assert_eq!(
+        status
+            .server_info
+            .as_ref()
+            .and_then(|info| info.title.as_deref()),
+        Some("Lookup Server")
+    );
 
     mcp_server_handle.abort();
     let _ = mcp_server_handle.await;
@@ -205,7 +213,9 @@ struct McpStatusServer {
 
 impl ServerHandler for McpStatusServer {
     fn get_info(&self) -> ServerInfo {
-        ServerInfo::new(ServerCapabilities::builder().enable_tools().build())
+        ServerInfo::new(ServerCapabilities::builder().enable_tools().build()).with_server_info(
+            Implementation::new("lookup-server", "1.0.0").with_title("Lookup Server"),
+        )
     }
 
     async fn list_tools(