tui: move view mode state

crates/tui/src/ui.rs

@@ -31,36 +31,7 @@ use crate::app::{ActionbarNoticeLevel, App, CompletionState, alert_source_label,
 use crate::block::{Block, CompactEvent, ThinkingBlock, ThinkingState};
 use crate::command::CommandCandidate;
 use crate::task::{TaskCounts, TaskEntry, TaskStatus, TaskStore};
-
-/// Display density for the history view.
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub enum Mode {
-    /// Every block fully expanded.
-    Detail,
-    /// Completed blocks compressed to roughly 5–6 lines; in-progress
-    /// tool blocks stay in detail.
-    Normal,
-    /// Each block rendered as a single line.
-    Overview,
-}
-
-impl Mode {
-    pub fn cycle(self) -> Self {
-        match self {
-            Mode::Detail => Mode::Normal,
-            Mode::Normal => Mode::Overview,
-            Mode::Overview => Mode::Detail,
-        }
-    }
-
-    pub fn label(self) -> &'static str {
-        match self {
-            Mode::Detail => "detail",
-            Mode::Normal => "normal",
-            Mode::Overview => "overview",
-        }
-    }
-}
+use crate::view_mode::Mode;
 
 pub fn draw(frame: &mut Frame, app: &mut App) {
     let area = frame.area();