Add creational patterns, Interpreter; remove scripts; update README

01-creational/abstract-factory/Application.java

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+package abstractfactory;
+
+/** Client - uses the factory without knowing concrete classes */
+public class Application {
+    private final Button button;
+    private final Checkbox checkbox;
+
+    public Application(GUIFactory factory) {
+        button   = factory.createButton();
+        checkbox = factory.createCheckbox();
+    }
+
+    public void render() {
+        button.render();
+        checkbox.render();
+    }
+
+    public void simulateClick() {
+        button.onClick();
+    }
+}

01-creational/abstract-factory/Button.java

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+package abstractfactory;
+
+public interface Button {
+    void render();
+    void onClick();
+}

01-creational/abstract-factory/Checkbox.java

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+package abstractfactory;
+
+public interface Checkbox {
+    void render();
+}

01-creational/abstract-factory/GUIFactory.java

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+package abstractfactory;
+
+/** Abstract Factory - creates families of related UI components */
+public interface GUIFactory {
+    Button createButton();
+    Checkbox createCheckbox();
+}

01-creational/abstract-factory/MacButton.java

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+package abstractfactory;
+
+public class MacButton implements Button {
+    @Override public void render()   { System.out.println("[Mac] Rendering button with rounded corners"); }
+    @Override public void onClick()  { System.out.println("[Mac] Button clicked - glow animation"); }
+}

01-creational/abstract-factory/MacCheckbox.java

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+package abstractfactory;
+
+public class MacCheckbox implements Checkbox {
+    @Override public void render() { System.out.println("[Mac] Rendering checkbox with rounded tick box"); }
+}

01-creational/abstract-factory/MacFactory.java

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+package abstractfactory;
+
+public class MacFactory implements GUIFactory {
+    @Override public Button   createButton()   { return new MacButton(); }
+    @Override public Checkbox createCheckbox() { return new MacCheckbox(); }
+}

01-creational/abstract-factory/Main.java

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+package abstractfactory;
+
+public class Main {
+    public static void main(String[] args) {
+        System.out.println("=== Abstract Factory Pattern Demo ===\n");
+
+        String os = System.getProperty("os.name", "Windows").toLowerCase();
+        GUIFactory factory = os.contains("mac") ? new MacFactory() : new WindowsFactory();
+
+        System.out.println("Detected OS family: " + (os.contains("mac") ? "Mac" : "Windows"));
+        System.out.println();
+
+        Application app = new Application(factory);
+        app.render();
+        app.simulateClick();
+
+        System.out.println("\n--- Forcing Mac UI ---");
+        Application macApp = new Application(new MacFactory());
+        macApp.render();
+        macApp.simulateClick();
+    }
+}

01-creational/abstract-factory/WindowsButton.java

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+package abstractfactory;
+
+public class WindowsButton implements Button {
+    @Override public void render()   { System.out.println("[Windows] Rendering button with square corners"); }
+    @Override public void onClick()  { System.out.println("[Windows] Button clicked - raised border effect"); }
+}

01-creational/abstract-factory/WindowsCheckbox.java

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+package abstractfactory;
+
+public class WindowsCheckbox implements Checkbox {
+    @Override public void render() { System.out.println("[Windows] Rendering checkbox with square tick box"); }
+}

01-creational/abstract-factory/WindowsFactory.java

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+package abstractfactory;
+
+public class WindowsFactory implements GUIFactory {
+    @Override public Button   createButton()   { return new WindowsButton(); }
+    @Override public Checkbox createCheckbox() { return new WindowsCheckbox(); }
+}