cleaned up debug code

src/main.rs

@@ -1938,6 +1938,25 @@ impl App {
                 let geometries = tab.collect_pane_geometries();
                 let active_pane_id = tab.active_pane;
 
+                // Early return: skip rendering if nothing is dirty and no animations
+                let has_dirty_content = geometries.iter().any(|(pane_id, _)| {
+                    tab.panes
+                        .get(pane_id)
+                        .map(|p| {
+                            let dl = &p.terminal.dirty_lines;
+                            dl[0] != 0 || dl[1] != 0 || dl[2] != 0 || dl[3] != 0
+                        })
+                        .unwrap_or(false)
+                });
+
+                if !has_dirty_content && self.edge_glows.is_empty() {
+                    let image_animation_in_progress = tab.panes.values().any(|p| {
+                        p.terminal.image_storage.has_animations()
+                    });
+                    needs_another_frame = image_animation_in_progress;
+                    return needs_another_frame;
+                }
+
                 // First pass: sync images and calculate dim factors (needs mutable access)
                 let mut dim_factors: Vec<(PaneId, f32)> = Vec::new();
                 for (pane_id, _) in &geometries {

src/renderer.rs

@@ -2150,10 +2150,6 @@ impl Renderer {
         let rows = terminal.rows;
         let total_cells = cols * rows;
         
-        // TEMPORARY DEBUG: Force full rebuild every frame to test if dirty-line tracking is the issue
-        // TODO: Remove this once the rendering bug is fixed
-        self.cells_dirty = true;
-        
         // Check if grid size changed - need full rebuild
         let size_changed = self.last_grid_size != (cols, rows);
         if size_changed {