style: Add turnLeft and turnRight methods to Turtle class for directional control

server/Turtle.js

@@ -400,6 +400,30 @@ export class Turtle extends EventEmitter {
     }
   }
 
+  /**
+   * Turn the turtle left
+   */
+  async turnLeft() {
+    const result = await this.exec('return turtle.turnLeft()');
+    if (result === true || (Array.isArray(result) && result[0] === true)) {
+      this._facing = (this._facing + 3) % 4;
+      this._emitUpdate();
+    }
+    return result;
+  }
+
+  /**
+   * Turn the turtle right
+   */
+  async turnRight() {
+    const result = await this.exec('return turtle.turnRight()');
+    if (result === true || (Array.isArray(result) && result[0] === true)) {
+      this._facing = (this._facing + 1) % 4;
+      this._emitUpdate();
+    }
+    return result;
+  }
+
   /**
    * Move the turtle forward. Updates position and deletes block at destination.
    */