create submission

lib/features/projects/domain/entities/project_progress.dart

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+/// Project Progress Entity
+///
+/// Represents a construction progress stage from the API.
+/// Used for dropdown selection when creating/updating project submissions.
+library;
+
+import 'package:equatable/equatable.dart';
+
+/// Project Progress Entity
+///
+/// Contains construction progress stages:
+/// - Chưa khởi công (Not started)
+/// - Khởi công móng (Foundation started)
+/// - Đang phần thô (Rough construction)
+/// - Đang hoàn thiện (Finishing)
+/// - Cất nóc (Roofing complete)
+/// - Hoàn thiện (Completed)
+class ProjectProgress extends Equatable {
+  /// Unique identifier (API: name)
+  final String id;
+
+  /// Progress status label in Vietnamese (API: status)
+  final String status;
+
+  const ProjectProgress({
+    required this.id,
+    required this.status,
+  });
+
+  @override
+  List<Object?> get props => [id, status];
+
+  @override
+  String toString() => 'ProjectProgress(id: $id, status: $status)';
+}