Add the new realtime event cases needed by the wire/runtime parity PR and fill the new audio frame field so the stack compiles cleanly on current main.
Co-authored-by: Codex <noreply@openai.com>
Keep the rebased realtime stack compiling on current main by rendering the Interrupted multi-agent status in tui_app_server.
Co-authored-by: Codex <noreply@openai.com>
This PR replicates the `tui` code directory and creates a temporary
parallel `tui_app_server` directory. It also implements a new feature
flag `tui_app_server` to select between the two tui implementations.
Once the new app-server-based TUI is stabilized, we'll delete the old
`tui` directory and feature flag.
