feat: add native/Java auth SDK, docs, CI, and examples

Made-with: Cursor

examples/java/ExampleApp.java

@@ -0,0 +1,21 @@
+import cn.craftlabs.auth.AuthProvider;
+import cn.craftlabs.auth.AuthResult;
+import cn.craftlabs.auth.bitanswer.BitAnswerProvider;
+
+/**
+ * 演示：通过 {@link BitAnswerProvider} 完成初始化与许可校验。
+ *
+ * <p>版权所有 © 广州创飞人工智能技术有限公司
+ *
+ * @author huangping@craftlabs.cn
+ */
+public class ExampleApp {
+    public static void main(String[] args) {
+        try (AuthProvider p = new BitAnswerProvider()) {
+            AuthResult r = p.initialize("{}");
+            System.out.println("init: " + r.isSuccess() + " " + r.getMessage());
+            r = p.checkLicense();
+            System.out.println("check: " + r.isSuccess() + " " + r.getMessage());
+        }
+    }
+}