refactor for background process + spawning gui

src/bin/bench_process.rs

@@ -0,0 +1,36 @@
+use zterm::terminal::Terminal;
+use std::time::Instant;
+use std::io::Write;
+
+fn main() {
+    // Generate seq 1 100000 output
+    let mut data = Vec::new();
+    for i in 1..=100000 {
+        writeln!(&mut data, "{}", i).unwrap();
+    }
+    println!("Data size: {} bytes", data.len());
+    
+    // Test with different terminal sizes to see scroll impact
+    for rows in [24, 100, 1000] {
+        let mut terminal = Terminal::new(80, rows, 10000);
+        let start = Instant::now();
+        terminal.process(&data);
+        let elapsed = start.elapsed();
+        println!("Terminal {}x{}: {:?} ({:.2} MB/s)", 
+            80, rows,
+            elapsed, 
+            (data.len() as f64 / 1024.0 / 1024.0) / elapsed.as_secs_f64()
+        );
+    }
+    
+    // Test with scrollback disabled
+    println!("\nWith scrollback disabled:");
+    let mut terminal = Terminal::new(80, 24, 0);
+    let start = Instant::now();
+    terminal.process(&data);
+    let elapsed = start.elapsed();
+    println!("Terminal 80x24, no scrollback: {:?} ({:.2} MB/s)", 
+        elapsed, 
+        (data.len() as f64 / 1024.0 / 1024.0) / elapsed.as_secs_f64()
+    );
+}