Add Cucumber step definitions for Percy visual testing

pom.xml

@@ -101,6 +101,19 @@
             <version>${junit.jupiter.version}</version>
             <scope>test</scope>
         </dependency>
+        <!-- Cucumber (optional - for BDD step definitions) -->
+        <dependency>
+            <groupId>io.cucumber</groupId>
+            <artifactId>cucumber-java</artifactId>
+            <version>7.15.0</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.cucumber</groupId>
+            <artifactId>cucumber-junit-platform-engine</artifactId>
+            <version>7.15.0</version>
+            <scope>test</scope>
+        </dependency>
 
     </dependencies>
     <distributionManagement>

src/main/java/io/percy/playwright/Environment.java

@@ -9,12 +9,33 @@ class Environment {
     private final static String SDK_VERSION = "1.0.2";
     private final static String SDK_NAME = "percy-playwright-java";
 
+    private String clientInfoOverride;
+    private String environmentInfoOverride;
+
     public String getClientInfo() {
+        if (clientInfoOverride != null) {
+            return clientInfoOverride;
+        }
         return SDK_NAME + "/" + SDK_VERSION;
     }
 
     public String getEnvironmentInfo() {
+        if (environmentInfoOverride != null) {
+            return environmentInfoOverride;
+        }
         String playwrightVersion = Playwright.class.getPackage().getImplementationVersion();
         return String.format("playwright-java; %s", playwrightVersion);
     }
+
+    void setClientInfo(String clientInfo) {
+        this.clientInfoOverride = clientInfo;
+    }
+
+    void setEnvironmentInfo(String environmentInfo) {
+        this.environmentInfoOverride = environmentInfo;
+    }
+
+    public static String getSdkVersion() {
+        return SDK_VERSION;
+    }
 }

src/main/java/io/percy/playwright/Percy.java

@@ -73,6 +73,22 @@ public Percy(Page page) {
         this.env = new Environment();
     }
 
+    /**
+     * Override the client info reported to Percy.
+     * Used by framework wrappers (e.g., Cucumber) to identify themselves.
+     */
+    public void setClientInfo(String clientInfo, String environmentInfo) {
+        this.env.setClientInfo(clientInfo);
+        this.env.setEnvironmentInfo(environmentInfo);
+    }
+
+    /**
+     * Get the SDK version string.
+     */
+    public static String getSdkVersion() {
+        return Environment.getSdkVersion();
+    }
+
     /**
      * Creates a region configuration based on the provided parameters.
      *