Add order entities and mocks for client order feature

Introduces new domain entities for order types and one-time orders, along with their positions. Adds a mock OrderRepository to the data_connect package and wires it into the module. Updates localization files for new order flows and refactors Equatable usage for consistency. Also adds a minus icon to the design system.

apps/mobile/packages/domain/lib/src/entities/skills/certificate.dart

@@ -4,6 +4,12 @@ import 'package:equatable/equatable.dart';
 ///
 /// Examples: "Food Hygiene Level 2", "SIA Badge".
 class Certificate extends Equatable {
+
+  const Certificate({
+    required this.id,
+    required this.name,
+    required this.isRequired,
+  });
   /// Unique identifier.
   final String id;
 
@@ -13,12 +19,6 @@ class Certificate extends Equatable {
   /// Whether this certificate is mandatory for platform access or specific roles.
   final bool isRequired;
 
-  const Certificate({
-    required this.id,
-    required this.name,
-    required this.isRequired,
-  });
-
   @override
-  List<Object?> get props => [id, name, isRequired];
+  List<Object?> get props => <Object?>[id, name, isRequired];
 }

apps/mobile/packages/domain/lib/src/entities/skills/skill.dart

@@ -5,6 +5,13 @@ import 'package:equatable/equatable.dart';
 /// Examples: "Waiter", "Security Guard", "Bartender".
 /// Linked to a [SkillCategory].
 class Skill extends Equatable {
+
+  const Skill({
+    required this.id,
+    required this.categoryId,
+    required this.name,
+    required this.basePrice,
+  });
   /// Unique identifier.
   final String id;
 
@@ -17,13 +24,6 @@ class Skill extends Equatable {
   /// Default hourly rate suggested for this skill.
   final double basePrice;
 
-  const Skill({
-    required this.id,
-    required this.categoryId,
-    required this.name,
-    required this.basePrice,
-  });
-
   @override
-  List<Object?> get props => [id, categoryId, name, basePrice];
+  List<Object?> get props => <Object?>[id, categoryId, name, basePrice];
 }

apps/mobile/packages/domain/lib/src/entities/skills/skill_category.dart

@@ -2,17 +2,17 @@ import 'package:equatable/equatable.dart';
 
 /// Represents a broad category of skills (e.g. "Hospitality", "Logistics").
 class SkillCategory extends Equatable {
+
+  const SkillCategory({
+    required this.id,
+    required this.name,
+  });
   /// Unique identifier.
   final String id;
 
   /// Display name.
   final String name;
 
-  const SkillCategory({
-    required this.id,
-    required this.name,
-  });
-
   @override
-  List<Object?> get props => [id, name];
+  List<Object?> get props => <Object?>[id, name];
 }

apps/mobile/packages/domain/lib/src/entities/skills/skill_kit.dart

@@ -4,6 +4,14 @@ import 'package:equatable/equatable.dart';
 ///
 /// Examples: "Black Shirt" (Uniform), "Safety Boots" (Equipment).
 class SkillKit extends Equatable {
+
+  const SkillKit({
+    required this.id,
+    required this.skillId,
+    required this.name,
+    required this.isRequired,
+    required this.type,
+  });
   /// Unique identifier.
   final String id;
 
@@ -19,14 +27,6 @@ class SkillKit extends Equatable {
   /// Type of kit ('uniform' or 'equipment').
   final String type;
 
-  const SkillKit({
-    required this.id,
-    required this.skillId,
-    required this.name,
-    required this.isRequired,
-    required this.type,
-  });
-
   @override
-  List<Object?> get props => [id, skillId, name, isRequired, type];
+  List<Object?> get props => <Object?>[id, skillId, name, isRequired, type];
 }

apps/mobile/packages/domain/lib/src/entities/skills/staff_skill.dart

@@ -26,6 +26,15 @@ enum StaffSkillStatus {
 
 /// Represents a staff member's qualification in a specific [Skill].
 class StaffSkill extends Equatable {
+
+  const StaffSkill({
+    required this.id,
+    required this.staffId,
+    required this.skillId,
+    required this.level,
+    required this.experienceYears,
+    required this.status,
+  });
   /// Unique identifier.
   final String id;
 
@@ -44,15 +53,6 @@ class StaffSkill extends Equatable {
   /// Verification status.
   final StaffSkillStatus status;
 
-  const StaffSkill({
-    required this.id,
-    required this.staffId,
-    required this.skillId,
-    required this.level,
-    required this.experienceYears,
-    required this.status,
-  });
-
   @override
-  List<Object?> get props => [id, staffId, skillId, level, experienceYears, status];
+  List<Object?> get props => <Object?>[id, staffId, skillId, level, experienceYears, status];
 }