[app-server] feat: add Declined status for command exec (#7101)

Add a `Declined` status for when we request an approval from the user
and the user declines. This allows us to distinguish from commands that
actually ran, but failed.

This behaves similarly to apply_patch / FileChange, which does the same
thing.

codex-rs/app-server/src/bespoke_event_handling.rs

@@ -175,12 +175,20 @@ pub(crate) async fn apply_bespoke_event_handling(
                 });
             }
             ApiVersion::V2 => {
+                let item_id = call_id.clone();
+                let command_actions = parsed_cmd
+                    .iter()
+                    .cloned()
+                    .map(V2ParsedCommand::from)
+                    .collect::<Vec<_>>();
+                let command_string = shlex_join(&command);
+
                 let params = CommandExecutionRequestApprovalParams {
                     thread_id: conversation_id.to_string(),
                     turn_id: turn_id.clone(),
                     // Until we migrate the core to be aware of a first class CommandExecutionItem
                     // and emit the corresponding EventMsg, we repurpose the call_id as the item_id.
-                    item_id: call_id.clone(),
+                    item_id: item_id.clone(),
                     reason,
                     risk: risk.map(V2SandboxCommandAssessment::from),
                 };
@@ -190,8 +198,17 @@ pub(crate) async fn apply_bespoke_event_handling(
                     ))
                     .await;
                 tokio::spawn(async move {
-                    on_command_execution_request_approval_response(event_id, rx, conversation)
-                        .await;
+                    on_command_execution_request_approval_response(
+                        event_id,
+                        item_id,
+                        command_string,
+                        cwd,
+                        command_actions,
+                        rx,
+                        conversation,
+                        outgoing,
+                    )
+                    .await;
                 });
             }
         },
@@ -370,16 +387,21 @@ pub(crate) async fn apply_bespoke_event_handling(
             .await;
         }
         EventMsg::ExecCommandBegin(exec_command_begin_event) => {
+            let item_id = exec_command_begin_event.call_id.clone();
+            let command_actions = exec_command_begin_event
+                .parsed_cmd
+                .into_iter()
+                .map(V2ParsedCommand::from)
+                .collect::<Vec<_>>();
+            let command = shlex_join(&exec_command_begin_event.command);
+            let cwd = exec_command_begin_event.cwd;
+
             let item = ThreadItem::CommandExecution {
-                id: exec_command_begin_event.call_id.clone(),
-                command: shlex_join(&exec_command_begin_event.command),
-                cwd: exec_command_begin_event.cwd,
+                id: item_id,
+                command,
+                cwd,
                 status: CommandExecutionStatus::InProgress,
-                command_actions: exec_command_begin_event
-                    .parsed_cmd
-                    .into_iter()
-                    .map(V2ParsedCommand::from)
-                    .collect(),
+                command_actions,
                 aggregated_output: None,
                 exit_code: None,
                 duration_ms: None,
@@ -417,6 +439,10 @@ pub(crate) async fn apply_bespoke_event_handling(
             } else {
                 CommandExecutionStatus::Failed
             };
+            let command_actions = parsed_cmd
+                .into_iter()
+                .map(V2ParsedCommand::from)
+                .collect::<Vec<_>>();
 
             let aggregated_output = if aggregated_output.is_empty() {
                 None
@@ -431,7 +457,7 @@ pub(crate) async fn apply_bespoke_event_handling(
                 command: shlex_join(&command),
                 cwd,
                 status,
-                command_actions: parsed_cmd.into_iter().map(V2ParsedCommand::from).collect(),
+                command_actions,
                 aggregated_output,
                 exit_code: Some(exit_code),
                 duration_ms: Some(duration_ms),
@@ -516,6 +542,30 @@ async fn complete_file_change_item(
         .await;
 }
 
+async fn complete_command_execution_item(
+    item_id: String,
+    command: String,
+    cwd: PathBuf,
+    command_actions: Vec<V2ParsedCommand>,
+    status: CommandExecutionStatus,
+    outgoing: &OutgoingMessageSender,
+) {
+    let item = ThreadItem::CommandExecution {
+        id: item_id,
+        command,
+        cwd,
+        status,
+        command_actions,
+        aggregated_output: None,
+        exit_code: None,
+        duration_ms: None,
+    };
+    let notification = ItemCompletedNotification { item };
+    outgoing
+        .send_server_notification(ServerNotification::ItemCompleted(notification))
+        .await;
+}
+
 async fn find_and_remove_turn_summary(
     conversation_id: ConversationId,
     turn_summary_store: &TurnSummaryStore,
@@ -765,42 +815,68 @@ async fn on_file_change_request_approval_response(
     }
 }
 
+#[allow(clippy::too_many_arguments)]
 async fn on_command_execution_request_approval_response(
     event_id: String,
+    item_id: String,
+    command: String,
+    cwd: PathBuf,
+    command_actions: Vec<V2ParsedCommand>,
     receiver: oneshot::Receiver<JsonValue>,
     conversation: Arc<CodexConversation>,
+    outgoing: Arc<OutgoingMessageSender>,
 ) {
     let response = receiver.await;
-    let value = match response {
-        Ok(value) => value,
+    let (decision, completion_status) = match response {
+        Ok(value) => {
+            let response = serde_json::from_value::<CommandExecutionRequestApprovalResponse>(value)
+                .unwrap_or_else(|err| {
+                    error!("failed to deserialize CommandExecutionRequestApprovalResponse: {err}");
+                    CommandExecutionRequestApprovalResponse {
+                        decision: ApprovalDecision::Decline,
+                        accept_settings: None,
+                    }
+                });
+
+            let CommandExecutionRequestApprovalResponse {
+                decision,
+                accept_settings,
+            } = response;
+
+            let (decision, completion_status) = match (decision, accept_settings) {
+                (ApprovalDecision::Accept, Some(settings)) if settings.for_session => {
+                    (ReviewDecision::ApprovedForSession, None)
+                }
+                (ApprovalDecision::Accept, _) => (ReviewDecision::Approved, None),
+                (ApprovalDecision::Decline, _) => (
+                    ReviewDecision::Denied,
+                    Some(CommandExecutionStatus::Declined),
+                ),
+                (ApprovalDecision::Cancel, _) => (
+                    ReviewDecision::Abort,
+                    Some(CommandExecutionStatus::Declined),
+                ),
+            };
+            (decision, completion_status)
+        }
         Err(err) => {
             error!("request failed: {err:?}");
-            return;
+            (ReviewDecision::Denied, Some(CommandExecutionStatus::Failed))
         }
     };
 
-    let response = serde_json::from_value::<CommandExecutionRequestApprovalResponse>(value)
-        .unwrap_or_else(|err| {
-            error!("failed to deserialize CommandExecutionRequestApprovalResponse: {err}");
-            CommandExecutionRequestApprovalResponse {
-                decision: ApprovalDecision::Decline,
-                accept_settings: None,
-            }
-        });
+    if let Some(status) = completion_status {
+        complete_command_execution_item(
+            item_id.clone(),
+            command.clone(),
+            cwd.clone(),
+            command_actions.clone(),
+            status,
+            outgoing.as_ref(),
+        )
+        .await;
+    }
 
-    let CommandExecutionRequestApprovalResponse {
-        decision,
-        accept_settings,
-    } = response;
-
-    let decision = match (decision, accept_settings) {
-        (ApprovalDecision::Accept, Some(settings)) if settings.for_session => {
-            ReviewDecision::ApprovedForSession
-        }
-        (ApprovalDecision::Accept, _) => ReviewDecision::Approved,
-        (ApprovalDecision::Decline, _) => ReviewDecision::Denied,
-        (ApprovalDecision::Cancel, _) => ReviewDecision::Abort,
-    };
     if let Err(err) = conversation
         .submit(Op::ExecApproval {
             id: event_id,