fix: use byte-based pane scrollback limit

3 files changed, 35 insertions, 5 deletions

diff --git a/src/app/input.rs b/src/app/input.rs
index 64731bf3..17f283c8 100644
--- a/src/app/input.rs
+++ b/src/app/input.rs
@@ -2804,9 +2804,14 @@ impl AppState {
             .and_then(|rt| rt.cwd());
 
         if let Some(ws) = self.active.and_then(|i| self.workspaces.get_mut(i)) {
-            if let Ok(new_id) =
-                ws.split_focused(direction, new_rows, new_cols, cwd, self.host_terminal_theme)
-            {
+            if let Ok(new_id) = ws.split_focused(
+                direction,
+                new_rows,
+                new_cols,
+                cwd,
+                self.pane_scrollback_limit_bytes,
+                self.host_terminal_theme,
+            ) {
                 ws.layout.focus_pane(new_id);
                 self.mode = Mode::Terminal;
             }
diff --git a/src/app/mod.rs b/src/app/mod.rs
index 6d677b0c..9020658a 100644
--- a/src/app/mod.rs
+++ b/src/app/mod.rs
@@ -170,6 +170,7 @@ impl App {
                 &snap,
                 24,
                 80,
+                config.advanced.scrollback_limit_bytes,
                 event_tx.clone(),
                 render_notify.clone(),
                 render_dirty.clone(),
@@ -205,6 +206,11 @@ impl App {
             )
         };
 
+        info!(
+            pane_scrollback_limit_bytes = config.advanced.scrollback_limit_bytes,
+            "using pane scrollback configuration"
+        );
+
         let latest_release_notes_available = crate::release_notes::load_latest().is_some();
 
         let mode = if config.should_show_onboarding() {
@@ -267,6 +273,7 @@ impl App {
             sidebar_collapsed: false,
             agent_panel_scope,
             confirm_close: config.ui.confirm_close,
+            pane_scrollback_limit_bytes: config.advanced.scrollback_limit_bytes,
             accent: crate::config::parse_color(&config.ui.accent),
             sound: config.ui.sound.clone(),
             toast_config: config.ui.toast.clone(),
@@ -1243,7 +1250,15 @@ impl App {
                     .workspaces
                     .get_mut(ws_idx)
                     .ok_or_else(|| std::io::Error::other("workspace disappeared"))
-                    .and_then(|ws| ws.create_tab(rows, cols, cwd, self.state.host_terminal_theme));
+                    .and_then(|ws| {
+                        ws.create_tab(
+                            rows,
+                            cols,
+                            cwd,
+                            self.state.pane_scrollback_limit_bytes,
+                            self.state.host_terminal_theme,
+                        )
+                    });
                 match result {
                     Ok(tab_idx) => {
                         if params.focus {
@@ -1442,6 +1457,7 @@ impl App {
                     rows,
                     cols,
                     params.cwd.map(std::path::PathBuf::from),
+                    self.state.pane_scrollback_limit_bytes,
                     self.state.host_terminal_theme,
                 ) {
                     Ok(new_pane_id) => new_pane_id,
@@ -1973,7 +1989,13 @@ impl App {
         };
         let (rows, cols) = self.state.estimate_pane_size();
         let ws = &mut self.state.workspaces[ws_idx];
-        let idx = ws.create_tab(rows, cols, initial_cwd, self.state.host_terminal_theme)?;
+        let idx = ws.create_tab(
+            rows,
+            cols,
+            initial_cwd,
+            self.state.pane_scrollback_limit_bytes,
+            self.state.host_terminal_theme,
+        )?;
         if focus {
             ws.switch_tab(idx);
             self.state.mode = Mode::Terminal;
@@ -1991,6 +2013,7 @@ impl App {
             initial_cwd,
             rows,
             cols,
+            self.state.pane_scrollback_limit_bytes,
             self.state.host_terminal_theme,
             self.event_tx.clone(),
             self.render_notify.clone(),
diff --git a/src/app/state.rs b/src/app/state.rs
index 84920131..a0955a16 100644
--- a/src/app/state.rs
+++ b/src/app/state.rs
@@ -601,6 +601,7 @@ pub struct AppState {
     pub sidebar_collapsed: bool,
     pub agent_panel_scope: AgentPanelScope,
     pub confirm_close: bool,
+    pub pane_scrollback_limit_bytes: usize,
     #[allow(dead_code)] // kept for backward compat; palette.accent is the source of truth
     pub accent: Color,
     pub sound: SoundConfig,
@@ -710,6 +711,7 @@ impl AppState {
             sidebar_collapsed: false,
             agent_panel_scope: AgentPanelScope::CurrentWorkspace,
             confirm_close: true,
+            pane_scrollback_limit_bytes: crate::config::DEFAULT_SCROLLBACK_LIMIT_BYTES,
             accent: Color::Cyan,
             sound: SoundConfig {
                 enabled: false,