fix(acp): include agentInfo in initialize response (#9765)

Signed-off-by: Roman Ponomarev <maksugr@gmail.com>

crates/goose/src/acp/server.rs

@@ -43,10 +43,10 @@ use agent_client_protocol::schema::{
     AuthenticateResponse, BlobResourceContents, CancelNotification, CloseSessionRequest,
     CloseSessionResponse, ConfigOptionUpdate, Content, ContentBlock, ContentChunk,
     CurrentModeUpdate, EmbeddedResource, EmbeddedResourceResource, FileSystemCapabilities,
-    ForkSessionRequest, ForkSessionResponse, ImageContent, InitializeRequest, InitializeResponse,
-    ListSessionsRequest, ListSessionsResponse, LoadSessionRequest, LoadSessionResponse,
-    McpCapabilities, McpServer, Meta, NewSessionRequest, NewSessionResponse, PermissionOption,
-    PermissionOptionKind, PromptCapabilities, PromptRequest, PromptResponse,
+    ForkSessionRequest, ForkSessionResponse, ImageContent, Implementation, InitializeRequest,
+    InitializeResponse, ListSessionsRequest, ListSessionsResponse, LoadSessionRequest,
+    LoadSessionResponse, McpCapabilities, McpServer, Meta, NewSessionRequest, NewSessionResponse,
+    PermissionOption, PermissionOptionKind, PromptCapabilities, PromptRequest, PromptResponse,
     RequestPermissionOutcome, RequestPermissionRequest, ResourceLink, SessionCapabilities,
     SessionCloseCapabilities, SessionConfigOption, SessionId, SessionInfoUpdate,
     SessionListCapabilities, SessionNotification, SessionUpdate, SetSessionConfigOptionRequest,
@@ -2113,6 +2113,7 @@ impl GooseAcpAgent {
             )
             .mcp_capabilities(McpCapabilities::new().http(true));
         Ok(InitializeResponse::new(args.protocol_version)
+            .agent_info(Implementation::new("goose", env!("CARGO_PKG_VERSION")))
             .agent_capabilities(capabilities)
             .auth_methods(vec![AuthMethod::Agent(
                 AuthMethodAgent::new("goose-provider", "Configure Provider")

crates/goose/tests/acp_fixtures/server.rs

@@ -273,7 +273,7 @@ impl Connection for AcpServerConnection {
                     .connect_with(transport, {
                         let cx_holder = cx_holder_clone;
                         async move |cx: ConnectionTo<Agent>| {
-                            let _resp = cx
+                            let resp = cx
                                 .send_request(
                                     InitializeRequest::new(ProtocolVersion::LATEST)
                                         .client_capabilities(
@@ -285,6 +285,11 @@ impl Connection for AcpServerConnection {
                                 .block_task()
                                 .await
                                 .unwrap();
+                            assert_eq!(
+                                resp.agent_info.as_ref().map(|info| info.name.as_str()),
+                                Some("goose"),
+                                "initialize response must identify the agent"
+                            );
 
                             *cx_holder.lock().unwrap() = Some(cx.clone());
                             let _ = ready_tx.send(());