Surface interactive requests in realtime conversations (#39113)

## What changed

- Mirror execution, permission, and patch approval requests into active realtime conversations with a prompt to review them in the app.
- Mirror user-input and elicitation requests with a prompt to respond in the app.
- Include the serialized request event so the realtime handoff retains the request details.

GitOrigin-RevId: 56fefa70b9ecaaad2fcf83592f20e8b4514a004a

codex-rs/core/src/session/turn.rs

@@ -1736,6 +1736,23 @@ pub(super) fn realtime_text_for_event(msg: &EventMsg) -> Option<(String, Option<
             TurnItem::AgentMessage(item) => Some((agent_message_text(item), item.phase.clone())),
             _ => None,
         },
+        EventMsg::ExecApprovalRequest(_)
+        | EventMsg::RequestPermissions(_)
+        | EventMsg::ApplyPatchApprovalRequest(_)
+        | EventMsg::RequestUserInput(_)
+        | EventMsg::ElicitationRequest(_) => {
+            let message = if matches!(
+                msg,
+                EventMsg::RequestUserInput(_) | EventMsg::ElicitationRequest(_)
+            ) {
+                "I need your input. Please respond in the app."
+            } else {
+                "I need your approval to continue. Please review the request in the app."
+            };
+            serde_json::to_string(msg)
+                .ok()
+                .map(|request| (format!("{message}\n\n{request}"), None))
+        }
         EventMsg::Error(_)
         | EventMsg::Warning(_)
         | EventMsg::GuardianWarning(_)
@@ -1778,14 +1795,9 @@ pub(super) fn realtime_text_for_event(msg: &EventMsg) -> Option<(String, Option<
         | EventMsg::ImageGenerationBegin(_)
         | EventMsg::ImageGenerationEnd(_)
         | EventMsg::ViewImageToolCall(_)
-        | EventMsg::ExecApprovalRequest(_)
-        | EventMsg::RequestPermissions(_)
-        | EventMsg::RequestUserInput(_)
         | EventMsg::DynamicToolCallRequest(_)
         | EventMsg::DynamicToolCallResponse(_)
         | EventMsg::GuardianAssessment(_)
-        | EventMsg::ElicitationRequest(_)
-        | EventMsg::ApplyPatchApprovalRequest(_)
         | EventMsg::DeprecationNotice(_)
         | EventMsg::StreamError(_)
         | EventMsg::TurnDiff(_)