Mirror user text into realtime (#17520)

- Let typed user messages submit while realtime is active and mirror
accepted text into the realtime text stream.
- Add integration coverage and snapshot for outbound realtime text.

codex-rs/tui/src/chatwidget/realtime.rs

@@ -29,7 +29,6 @@ pub(super) struct RealtimeConversationUiState {
     pub(super) phase: RealtimeConversationPhase,
     requested_close: bool,
     session_id: Option<String>,
-    warned_audio_only_submission: bool,
     transport: RealtimeConversationUiTransport,
     #[cfg(not(target_os = "linux"))]
     pub(super) meter_placeholder_id: Option<String>,
@@ -191,28 +190,6 @@ impl ChatWidget {
         self.last_rendered_user_message_event.as_ref() != Some(&key)
     }
 
-    pub(super) fn maybe_defer_user_message_for_realtime(
-        &mut self,
-        user_message: UserMessage,
-    ) -> Option<UserMessage> {
-        if !self.realtime_conversation.is_live() {
-            return Some(user_message);
-        }
-
-        self.restore_user_message_to_composer(user_message);
-        if !self.realtime_conversation.warned_audio_only_submission {
-            self.realtime_conversation.warned_audio_only_submission = true;
-            self.add_info_message(
-                "Realtime voice mode is audio-only. Use /realtime to stop.".to_string(),
-                /*hint*/ None,
-            );
-        } else {
-            self.request_redraw();
-        }
-
-        None
-    }
-
     fn realtime_footer_hint_items() -> Vec<(String, String)> {
         vec![("/realtime".to_string(), "stop live voice".to_string())]
     }
@@ -238,7 +215,6 @@ impl ChatWidget {
         self.realtime_conversation.phase = RealtimeConversationPhase::Starting;
         self.realtime_conversation.requested_close = false;
         self.realtime_conversation.session_id = None;
-        self.realtime_conversation.warned_audio_only_submission = false;
         self.set_footer_hint_override(Some(Self::realtime_footer_hint_items()));
         match self.config.realtime.transport {
             RealtimeTransport::Websocket => {
@@ -297,7 +273,6 @@ impl ChatWidget {
         self.realtime_conversation.phase = RealtimeConversationPhase::Inactive;
         self.realtime_conversation.requested_close = false;
         self.realtime_conversation.session_id = None;
-        self.realtime_conversation.warned_audio_only_submission = false;
         self.realtime_conversation.transport = RealtimeConversationUiTransport::Websocket;
     }
 
@@ -320,7 +295,6 @@ impl ChatWidget {
             return;
         }
         self.realtime_conversation.session_id = ev.session_id;
-        self.realtime_conversation.warned_audio_only_submission = false;
         self.set_footer_hint_override(Some(Self::realtime_footer_hint_items()));
         if self.realtime_conversation_uses_webrtc() {
             self.realtime_conversation.phase = RealtimeConversationPhase::Starting;