Add functionality for 'select all'

src/ui.rs

@@ -563,6 +563,11 @@ fn render_log_view(frame: &mut Frame, app: &App) {
                     }
                 }
             }
+            LogViewSelection::All => {
+                // Select everything
+                selected_line_start = 0;
+                selected_line_end = app.log_view_content.len().saturating_sub(1);
+            }
         }
         
         // Third pass: render with highlighting