TUI: Show apply patch diff. Stack: [2/2] (#2050)

Show the diff for apply patch

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Stack:
-> #2050
#2049

Author: aibrahim-oai

codex-rs/tui/src/chatwidget.rs

@@ -46,6 +46,7 @@ use crate::bottom_pane::BottomPane;
 use crate::bottom_pane::BottomPaneParams;
 use crate::bottom_pane::CancellationEvent;
 use crate::bottom_pane::InputResult;
+use crate::common::DEFAULT_WRAP_COLS;
 use crate::history_cell::CommandOutput;
 use crate::history_cell::ExecCell;
 use crate::history_cell::HistoryCell;
@@ -223,7 +224,7 @@ impl ChatWidget<'_> {
             content_buffer: String::new(),
             answer_buffer: String::new(),
             running_commands: HashMap::new(),
-            live_builder: RowBuilder::new(80),
+            live_builder: RowBuilder::new(DEFAULT_WRAP_COLS.into()),
             current_stream: None,
             stream_header_emitted: false,
             live_max_rows: 3,

codex-rs/tui/src/common.rs

@@ -0,0 +1 @@
+pub(crate) const DEFAULT_WRAP_COLS: u16 = 80;