initial multi-turtle support

turtle-lib/examples/cheese.rs

@@ -71,7 +71,7 @@ async fn main() {
 
     println!("Building and executing turtle plan...");
     // Execute the plan
-    let mut app = TurtleApp::new().with_commands(turtle.build());
+    let mut app = TurtleApp::new().with_commands(0, turtle.build());
 
     loop {
         clear_background(Color::new(0.95, 0.95, 0.98, 1.0));

turtle-lib/examples/fill_advanced.rs

@@ -111,7 +111,7 @@ async fn main() {
     // Set animation speed
     t.set_speed(500);
 
-    let mut app = TurtleApp::new().with_commands(t.build());
+    let mut app = TurtleApp::new().with_commands(0, t.build());
 
     let target_fps = 1.0; // 1 frame per second for debugging
     let frame_time = 1.0 / target_fps;

turtle-lib/examples/logging_example.rs

@@ -75,7 +75,7 @@ async fn main() {
     t.set_speed(100); // Slow animation to see the logs in real-time
 
     // Create turtle app
-    let mut app = TurtleApp::new().with_commands(t.build());
+    let mut app = TurtleApp::new().with_commands(0, t.build());
 
     // Main loop
     loop {

turtle-lib/examples/yinyang.rs

@@ -4,7 +4,7 @@ use turtle_lib::*;
 
 #[turtle_main("Yin-Yang")]
 fn draw(turtle: &mut TurtlePlan) {
-    turtle.set_speed(200);
+    turtle.set_speed(100);
 
     turtle.circle_left(90.0, 180.0, 36);
     turtle.begin_fill();