Function handle_events 

pub(crate) fn handle_events(
    ui_receiver: &Receiver<UiEvent>,
    tcp_sender: &mut Option<Sender<TcpClientMessage>>,
    connection_state: &mut ConnectionState,
    tree: &mut DockState<Tab>,
)

Drains and processes all queued UiEvent items sent from UI interactions or network handlers.

Manages connection state transitions, sends outgoing TCP messages, and activates/deactivates UI panels in the docking tree accordingly.

Arguments

• ui_receiver - Receiver channel for queued UiEvents.
• tcp_sender - Mutable reference to the optional TCP client sender channel.
• connection_state - Mutable reference to the application’s central ConnectionState.
• tree - Mutable reference to the UI docking tree.