refactor: update text form field model to use dynamic value type, enhance condition evaluator for step index extraction, and improve SDK path formatting

packages/chicken/lib/presentation/utils/condition_evaluator.dart

@@ -0,0 +1,61 @@
+import 'package:flutter/foundation.dart';
+import 'package:rasadyar_core/core.dart';
+
+class ConditionEvaluator {
+  static bool check(String? condition, RxMap<String, dynamic>? state) {
+    if (condition == null || condition.isEmpty) return true;
+    if (state == null) {
+      return condition.contains('activeStepperIndex == 0');
+    }
+
+    try {
+      if (condition.contains(' == ')) {
+        final parts = condition.split(' == ');
+        if (parts.length != 2) return true;
+
+        final key = parts[0].trim();
+        var expectedValue = parts[1].trim();
+
+        // Remove quotes
+        if ((expectedValue.startsWith("'") && expectedValue.endsWith("'")) ||
+            (expectedValue.startsWith('"') && expectedValue.endsWith('"'))) {
+          expectedValue = expectedValue.substring(1, expectedValue.length - 1);
+        }
+
+        final actualValue = state[key];
+
+        if (actualValue == null) {
+          if (key == 'activeStepperIndex' && expectedValue == '0') return true;
+          return false;
+        }
+
+        // Handle numeric comparison if possible
+        final expectedInt = int.tryParse(expectedValue);
+        if (expectedInt != null) {
+          if (actualValue is int) return actualValue == expectedInt;
+          if (actualValue is String) return int.tryParse(actualValue) == expectedInt;
+        }
+
+        return actualValue.toString() == expectedValue;
+      }
+      return true;
+    } catch (e) {
+      debugPrint('Error parsing condition: $e');
+      return false;
+    }
+  }
+
+  /// Extracts step index without using expensive RegExp in a loop if possible,
+  /// or at least centralizes the logic.
+  static int? extractStepIndex(String? condition) {
+    if (condition == null || !condition.contains('activeStepperIndex')) return null;
+
+    try {
+      final parts = condition.split(' == ');
+      if (parts.length == 2 && parts[0].trim() == 'activeStepperIndex') {
+        return int.tryParse(parts[1].trim());
+      }
+    } catch (_) {}
+    return null;
+  }
+}

packages/chicken/lib/presentation/utils/sdui_extension.dart

@@ -0,0 +1,11 @@
+import 'package:rasadyar_chicken/presentation/widget/sdui/model/sdui_widget.dart';
+import 'package:rasadyar_chicken/presentation/widget/sdui/widgets/stepper/model/stepper_sdui_model.dart';
+
+extension SDUIModelExtensions on SDUIWidgetModel {
+  // چک میکند آیا این ویجت استپر است؟
+  bool get isStepper => this.maybeWhen(stepper: (_, _, _, _) => true, orElse: () => false);
+
+  // دیتای استپر را برمی‌گرداند (اگر استپر باشد)
+  StepperSDUIModel? get stepperData =>
+      maybeWhen(stepper: (data, _, _, _) => data, orElse: () => null);
+}