diff --git a/app/lib/src/core/network/api_error.dart b/app/lib/src/core/network/api_error.dart
new file mode 100644
index 0000000..1ba2b9f
--- /dev/null
+++ b/app/lib/src/core/network/api_error.dart
@@ -0,0 +1,23 @@
+class ApiError {
+  const ApiError({
+    required this.error,
+    required this.code,
+    required this.details,
+  });
+
+  final String error;
+  final String code;
+  final Map<String, dynamic> details;
+
+  factory ApiError.fromJson(Map<String, dynamic> json) {
+    return ApiError(
+      error: json['error'] as String? ?? '',
+      code: json['code'] as String? ?? '',
+      details: json['details'] as Map<String, dynamic>? ?? {},
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {'error': error, 'code': code, 'details': details};
+  }
+}
diff --git a/app/lib/src/features/auth/domain/auth_models.dart b/app/lib/src/features/auth/domain/auth_models.dart
new file mode 100644
index 0000000..40f20af
--- /dev/null
+++ b/app/lib/src/features/auth/domain/auth_models.dart
@@ -0,0 +1,238 @@
+import '../../directory/domain/employee.dart';
+
+class LoginDeviceInfo {
+  const LoginDeviceInfo({
+    required this.platform,
+    required this.appVersion,
+    required this.deviceName,
+  });
+
+  final String platform;
+  final String appVersion;
+  final String deviceName;
+
+  factory LoginDeviceInfo.fromJson(Map<String, dynamic> json) {
+    return LoginDeviceInfo(
+      platform: json['platform'] as String? ?? '',
+      appVersion: json['appVersion'] as String? ?? '',
+      deviceName: json['deviceName'] as String? ?? '',
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'platform': platform,
+      'appVersion': appVersion,
+      'deviceName': deviceName,
+    };
+  }
+}
+
+class PhoneLoginRequest {
+  const PhoneLoginRequest({required this.phoneNumber, required this.device});
+
+  final String phoneNumber;
+  final LoginDeviceInfo device;
+
+  Map<String, dynamic> toJson() {
+    return {'phoneNumber': phoneNumber, 'device': device.toJson()};
+  }
+}
+
+class LoginUser {
+  const LoginUser({
+    required this.id,
+    required this.name,
+    required this.phoneNumber,
+    required this.tenantId,
+    required this.tenantName,
+    required this.tenantSlug,
+    this.department,
+    this.grade,
+    this.position,
+    this.jobTitle,
+  });
+
+  final String id;
+  final String name;
+  final String phoneNumber;
+  final String tenantId;
+  final String tenantName;
+  final String tenantSlug;
+  final String? department;
+  final String? grade;
+  final String? position;
+  final String? jobTitle;
+
+  factory LoginUser.fromJson(Map<String, dynamic> json) {
+    return LoginUser(
+      id: json['id'] as String? ?? '',
+      name: json['name'] as String? ?? '',
+      phoneNumber: json['phoneNumber'] as String? ?? '',
+      tenantId: json['tenantId'] as String? ?? '',
+      tenantName: json['tenantName'] as String? ?? '',
+      tenantSlug: json['tenantSlug'] as String? ?? '',
+      department: json['department'] as String?,
+      grade: json['grade'] as String?,
+      position: json['position'] as String?,
+      jobTitle: json['jobTitle'] as String?,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'name': name,
+      'phoneNumber': phoneNumber,
+      'tenantId': tenantId,
+      'tenantName': tenantName,
+      'tenantSlug': tenantSlug,
+      'department': department,
+      'grade': grade,
+      'position': position,
+      'jobTitle': jobTitle,
+    };
+  }
+}
+
+class PhoneLoginResponse {
+  const PhoneLoginResponse({
+    required this.status,
+    required this.token,
+    required this.expiresAt,
+    required this.user,
+  });
+
+  final String status;
+  final String token;
+  final DateTime expiresAt;
+  final LoginUser user;
+
+  factory PhoneLoginResponse.fromJson(Map<String, dynamic> json) {
+    return PhoneLoginResponse(
+      status: json['status'] as String? ?? '',
+      token: json['token'] as String? ?? '',
+      expiresAt: DateTime.parse(json['expiresAt'] as String),
+      user: LoginUser.fromJson(json['user'] as Map<String, dynamic>? ?? {}),
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'status': status,
+      'token': token,
+      'expiresAt': expiresAt.toUtc().toIso8601String(),
+      'user': user.toJson(),
+    };
+  }
+}
+
+class UserPermissions {
+  const UserPermissions({
+    required this.directory,
+    required this.organization,
+    required this.favoritesSync,
+  });
+
+  final bool directory;
+  final bool organization;
+  final bool favoritesSync;
+
+  factory UserPermissions.fromJson(Map<String, dynamic> json) {
+    return UserPermissions(
+      directory: json['directory'] as bool? ?? false,
+      organization: json['organization'] as bool? ?? false,
+      favoritesSync: json['favoritesSync'] as bool? ?? false,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'directory': directory,
+      'organization': organization,
+      'favoritesSync': favoritesSync,
+    };
+  }
+}
+
+class CurrentUser {
+  const CurrentUser({
+    required this.id,
+    required this.name,
+    required this.phoneNumber,
+    required this.email,
+    required this.tenantId,
+    required this.tenantName,
+    required this.tenantSlug,
+    required this.permissions,
+    this.department,
+    this.grade,
+    this.position,
+    this.jobTitle,
+  });
+
+  final String id;
+  final String name;
+  final String phoneNumber;
+  final String email;
+  final String tenantId;
+  final String tenantName;
+  final String tenantSlug;
+  final UserPermissions permissions;
+  final String? department;
+  final String? grade;
+  final String? position;
+  final String? jobTitle;
+
+  factory CurrentUser.fromJson(Map<String, dynamic> json) {
+    return CurrentUser(
+      id: json['id'] as String? ?? '',
+      name: json['name'] as String? ?? '',
+      phoneNumber: json['phoneNumber'] as String? ?? '',
+      email: json['email'] as String? ?? '',
+      tenantId: json['tenantId'] as String? ?? '',
+      tenantName: json['tenantName'] as String? ?? '',
+      tenantSlug: json['tenantSlug'] as String? ?? '',
+      permissions: UserPermissions.fromJson(
+        json['permissions'] as Map<String, dynamic>? ?? {},
+      ),
+      department: json['department'] as String?,
+      grade: json['grade'] as String?,
+      position: json['position'] as String?,
+      jobTitle: json['jobTitle'] as String?,
+    );
+  }
+
+  Employee toEmployee() {
+    return Employee(
+      id: id,
+      name: name,
+      phoneNumber: phoneNumber,
+      email: email,
+      tenantId: tenantId,
+      tenantName: tenantName,
+      tenantSlug: tenantSlug,
+      department: department,
+      grade: grade,
+      position: position,
+      jobTitle: jobTitle,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'name': name,
+      'phoneNumber': phoneNumber,
+      'email': email,
+      'tenantId': tenantId,
+      'tenantName': tenantName,
+      'tenantSlug': tenantSlug,
+      'department': department,
+      'grade': grade,
+      'position': position,
+      'jobTitle': jobTitle,
+      'permissions': permissions.toJson(),
+    };
+  }
+}
diff --git a/app/lib/src/features/directory/domain/employee.dart b/app/lib/src/features/directory/domain/employee.dart
new file mode 100644
index 0000000..a48ca82
--- /dev/null
+++ b/app/lib/src/features/directory/domain/employee.dart
@@ -0,0 +1,233 @@
+class Employee {
+  const Employee({
+    required this.id,
+    required this.name,
+    required this.phoneNumber,
+    this.phoneDisplay,
+    this.email,
+    required this.tenantId,
+    required this.tenantName,
+    required this.tenantSlug,
+    this.department,
+    this.grade,
+    this.position,
+    this.jobTitle,
+    this.status,
+    this.profileImageUrl,
+    this.sortOrder,
+  });
+
+  final String id;
+  final String name;
+  final String phoneNumber;
+  final String? phoneDisplay;
+  final String? email;
+  final String tenantId;
+  final String tenantName;
+  final String tenantSlug;
+  final String? department;
+  final String? grade;
+  final String? position;
+  final String? jobTitle;
+  final String? status;
+  final String? profileImageUrl;
+  final int? sortOrder;
+
+  factory Employee.fromJson(Map<String, dynamic> json) {
+    return Employee(
+      id: json['id'] as String? ?? '',
+      name: json['name'] as String? ?? '',
+      phoneNumber: json['phoneNumber'] as String? ?? '',
+      phoneDisplay: json['phoneDisplay'] as String?,
+      email: json['email'] as String?,
+      tenantId: json['tenantId'] as String? ?? '',
+      tenantName: json['tenantName'] as String? ?? '',
+      tenantSlug: json['tenantSlug'] as String? ?? '',
+      department: json['department'] as String?,
+      grade: json['grade'] as String?,
+      position: json['position'] as String?,
+      jobTitle: json['jobTitle'] as String?,
+      status: json['status'] as String?,
+      profileImageUrl: json['profileImageUrl'] as String?,
+      sortOrder: json['sortOrder'] as int?,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'name': name,
+      'phoneNumber': phoneNumber,
+      'phoneDisplay': phoneDisplay,
+      'email': email,
+      'tenantId': tenantId,
+      'tenantName': tenantName,
+      'tenantSlug': tenantSlug,
+      'department': department,
+      'grade': grade,
+      'position': position,
+      'jobTitle': jobTitle,
+      'status': status,
+      'profileImageUrl': profileImageUrl,
+      'sortOrder': sortOrder,
+    };
+  }
+}
+
+class TenantRef {
+  const TenantRef({
+    required this.id,
+    required this.name,
+    required this.slug,
+    required this.type,
+    this.parentId,
+  });
+
+  final String id;
+  final String name;
+  final String slug;
+  final String type;
+  final String? parentId;
+
+  factory TenantRef.fromJson(Map<String, dynamic> json) {
+    return TenantRef(
+      id: json['id'] as String? ?? '',
+      name: json['name'] as String? ?? '',
+      slug: json['slug'] as String? ?? '',
+      type: json['type'] as String? ?? '',
+      parentId: json['parentId'] as String?,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'name': name,
+      'slug': slug,
+      'type': type,
+      'parentId': parentId,
+    };
+  }
+}
+
+class EmployeeActions {
+  const EmployeeActions({
+    required this.call,
+    required this.sms,
+    required this.email,
+  });
+
+  final bool call;
+  final bool sms;
+  final bool email;
+
+  factory EmployeeActions.fromJson(Map<String, dynamic> json) {
+    return EmployeeActions(
+      call: json['call'] as bool? ?? false,
+      sms: json['sms'] as bool? ?? false,
+      email: json['email'] as bool? ?? false,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {'call': call, 'sms': sms, 'email': email};
+  }
+}
+
+class EmployeeDetail extends Employee {
+  const EmployeeDetail({
+    required super.id,
+    required super.name,
+    required super.phoneNumber,
+    super.phoneDisplay,
+    super.email,
+    required super.tenantId,
+    required super.tenantName,
+    required super.tenantSlug,
+    super.department,
+    super.grade,
+    super.position,
+    super.jobTitle,
+    super.status,
+    super.profileImageUrl,
+    super.sortOrder,
+    required this.joinedTenants,
+    required this.actions,
+  });
+
+  final List<TenantRef> joinedTenants;
+  final EmployeeActions actions;
+
+  factory EmployeeDetail.fromJson(Map<String, dynamic> json) {
+    return EmployeeDetail(
+      id: json['id'] as String? ?? '',
+      name: json['name'] as String? ?? '',
+      phoneNumber: json['phoneNumber'] as String? ?? '',
+      phoneDisplay: json['phoneDisplay'] as String?,
+      email: json['email'] as String?,
+      tenantId: json['tenantId'] as String? ?? '',
+      tenantName: json['tenantName'] as String? ?? '',
+      tenantSlug: json['tenantSlug'] as String? ?? '',
+      department: json['department'] as String?,
+      grade: json['grade'] as String?,
+      position: json['position'] as String?,
+      jobTitle: json['jobTitle'] as String?,
+      status: json['status'] as String?,
+      profileImageUrl: json['profileImageUrl'] as String?,
+      sortOrder: json['sortOrder'] as int?,
+      joinedTenants: (json['joinedTenants'] as List<dynamic>? ?? [])
+          .map((item) => TenantRef.fromJson(item as Map<String, dynamic>))
+          .toList(),
+      actions: EmployeeActions.fromJson(
+        json['actions'] as Map<String, dynamic>? ?? {},
+      ),
+    );
+  }
+
+  @override
+  Map<String, dynamic> toJson() {
+    return {
+      ...super.toJson(),
+      'joinedTenants': joinedTenants.map((tenant) => tenant.toJson()).toList(),
+      'actions': actions.toJson(),
+    };
+  }
+}
+
+class EmployeeListResponse {
+  const EmployeeListResponse({
+    required this.items,
+    required this.limit,
+    required this.offset,
+    required this.total,
+    required this.nextCursor,
+  });
+
+  final List<Employee> items;
+  final int limit;
+  final int offset;
+  final int total;
+  final String nextCursor;
+
+  factory EmployeeListResponse.fromJson(Map<String, dynamic> json) {
+    return EmployeeListResponse(
+      items: (json['items'] as List<dynamic>? ?? [])
+          .map((item) => Employee.fromJson(item as Map<String, dynamic>))
+          .toList(),
+      limit: json['limit'] as int? ?? 0,
+      offset: json['offset'] as int? ?? 0,
+      total: json['total'] as int? ?? 0,
+      nextCursor: json['nextCursor'] as String? ?? '',
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'items': items.map((employee) => employee.toJson()).toList(),
+      'limit': limit,
+      'offset': offset,
+      'total': total,
+      'nextCursor': nextCursor,
+    };
+  }
+}
diff --git a/app/lib/src/features/favorites/domain/favorite_employee.dart b/app/lib/src/features/favorites/domain/favorite_employee.dart
new file mode 100644
index 0000000..2348e43
--- /dev/null
+++ b/app/lib/src/features/favorites/domain/favorite_employee.dart
@@ -0,0 +1,20 @@
+class FavoriteEmployee {
+  const FavoriteEmployee({required this.employeeId, required this.createdAt});
+
+  final String employeeId;
+  final DateTime createdAt;
+
+  factory FavoriteEmployee.fromJson(Map<String, dynamic> json) {
+    return FavoriteEmployee(
+      employeeId: json['employeeId'] as String? ?? '',
+      createdAt: DateTime.parse(json['createdAt'] as String),
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'employeeId': employeeId,
+      'createdAt': createdAt.toUtc().toIso8601String(),
+    };
+  }
+}
diff --git a/app/lib/src/features/organization/domain/organization_models.dart b/app/lib/src/features/organization/domain/organization_models.dart
new file mode 100644
index 0000000..4113d2a
--- /dev/null
+++ b/app/lib/src/features/organization/domain/organization_models.dart
@@ -0,0 +1,130 @@
+import '../../directory/domain/employee.dart';
+
+class TenantSummary {
+  const TenantSummary({
+    required this.id,
+    required this.name,
+    required this.slug,
+    required this.type,
+    this.parentId,
+    required this.memberCount,
+    required this.totalMemberCount,
+  });
+
+  final String id;
+  final String name;
+  final String slug;
+  final String type;
+  final String? parentId;
+  final int memberCount;
+  final int totalMemberCount;
+
+  factory TenantSummary.fromJson(Map<String, dynamic> json) {
+    return TenantSummary(
+      id: json['id'] as String? ?? '',
+      name: json['name'] as String? ?? '',
+      slug: json['slug'] as String? ?? '',
+      type: json['type'] as String? ?? '',
+      parentId: json['parentId'] as String?,
+      memberCount: json['memberCount'] as int? ?? 0,
+      totalMemberCount: json['totalMemberCount'] as int? ?? 0,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'name': name,
+      'slug': slug,
+      'type': type,
+      'parentId': parentId,
+      'memberCount': memberCount,
+      'totalMemberCount': totalMemberCount,
+    };
+  }
+}
+
+class TenantListResponse {
+  const TenantListResponse({required this.items, required this.generatedAt});
+
+  final List<TenantSummary> items;
+  final DateTime generatedAt;
+
+  factory TenantListResponse.fromJson(Map<String, dynamic> json) {
+    return TenantListResponse(
+      items: (json['items'] as List<dynamic>? ?? [])
+          .map((item) => TenantSummary.fromJson(item as Map<String, dynamic>))
+          .toList(),
+      generatedAt: DateTime.parse(json['generatedAt'] as String),
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'items': items.map((tenant) => tenant.toJson()).toList(),
+      'generatedAt': generatedAt.toUtc().toIso8601String(),
+    };
+  }
+}
+
+class OrgChartCacheInfo {
+  const OrgChartCacheInfo({
+    required this.source,
+    required this.hit,
+    this.ttlSeconds,
+  });
+
+  final String source;
+  final bool hit;
+  final int? ttlSeconds;
+
+  factory OrgChartCacheInfo.fromJson(Map<String, dynamic> json) {
+    return OrgChartCacheInfo(
+      source: json['source'] as String? ?? '',
+      hit: json['hit'] as bool? ?? false,
+      ttlSeconds: json['ttlSeconds'] as int?,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {'source': source, 'hit': hit, 'ttlSeconds': ttlSeconds};
+  }
+}
+
+class OrgChartSnapshot {
+  const OrgChartSnapshot({
+    required this.tenants,
+    required this.employees,
+    required this.generatedAt,
+    this.cache,
+  });
+
+  final List<TenantSummary> tenants;
+  final List<Employee> employees;
+  final DateTime generatedAt;
+  final OrgChartCacheInfo? cache;
+
+  factory OrgChartSnapshot.fromJson(Map<String, dynamic> json) {
+    return OrgChartSnapshot(
+      tenants: (json['tenants'] as List<dynamic>? ?? [])
+          .map((item) => TenantSummary.fromJson(item as Map<String, dynamic>))
+          .toList(),
+      employees: (json['employees'] as List<dynamic>? ?? [])
+          .map((item) => Employee.fromJson(item as Map<String, dynamic>))
+          .toList(),
+      generatedAt: DateTime.parse(json['generatedAt'] as String),
+      cache: json['cache'] == null
+          ? null
+          : OrgChartCacheInfo.fromJson(json['cache'] as Map<String, dynamic>),
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'tenants': tenants.map((tenant) => tenant.toJson()).toList(),
+      'employees': employees.map((employee) => employee.toJson()).toList(),
+      'generatedAt': generatedAt.toUtc().toIso8601String(),
+      'cache': cache?.toJson(),
+    };
+  }
+}
diff --git a/app/test/models/api_error_test.dart b/app/test/models/api_error_test.dart
new file mode 100644
index 0000000..c4da5db
--- /dev/null
+++ b/app/test/models/api_error_test.dart
@@ -0,0 +1,15 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:tdc114plus/src/core/network/api_error.dart';
+
+void main() {
+  test('ApiError parses common error payload', () {
+    final error = ApiError.fromJson({
+      'error': 'Unauthorized',
+      'code': 'unauthorized',
+      'details': {'reason': 'expired'},
+    });
+
+    expect(error.code, 'unauthorized');
+    expect(error.details['reason'], 'expired');
+  });
+}
diff --git a/app/test/models/auth_models_test.dart b/app/test/models/auth_models_test.dart
new file mode 100644
index 0000000..f4937c1
--- /dev/null
+++ b/app/test/models/auth_models_test.dart
@@ -0,0 +1,74 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:tdc114plus/src/features/auth/domain/auth_models.dart';
+
+void main() {
+  test('PhoneLoginRequest serializes phone login payload', () {
+    const request = PhoneLoginRequest(
+      phoneNumber: '01012345678',
+      device: LoginDeviceInfo(
+        platform: 'android',
+        appVersion: '0.1.0',
+        deviceName: 'Pixel 8',
+      ),
+    );
+
+    expect(request.toJson(), {
+      'phoneNumber': '01012345678',
+      'device': {
+        'platform': 'android',
+        'appVersion': '0.1.0',
+        'deviceName': 'Pixel 8',
+      },
+    });
+  });
+
+  test('PhoneLoginResponse parses session token response', () {
+    final response = PhoneLoginResponse.fromJson({
+      'status': 'ok',
+      'token': 'baron-sso-session-token',
+      'expiresAt': '2026-07-02T12:00:00Z',
+      'user': {
+        'id': 'user-uuid',
+        'name': 'User One',
+        'phoneNumber': '+821012345678',
+        'tenantId': 'tenant-uuid',
+        'tenantName': 'Hanmac',
+        'tenantSlug': 'hanmac',
+        'department': 'Engineering',
+        'grade': 'Lead',
+        'position': 'Manager',
+        'jobTitle': 'Developer',
+      },
+    });
+
+    expect(response.status, 'ok');
+    expect(response.token, 'baron-sso-session-token');
+    expect(
+      response.expiresAt.toUtc().toIso8601String(),
+      '2026-07-02T12:00:00.000Z',
+    );
+    expect(response.user.tenantSlug, 'hanmac');
+  });
+
+  test('CurrentUser parses permissions and can map to employee', () {
+    final user = CurrentUser.fromJson({
+      'id': 'user-uuid',
+      'name': 'User One',
+      'phoneNumber': '+821012345678',
+      'email': 'user@example.com',
+      'tenantId': 'tenant-uuid',
+      'tenantName': 'Hanmac',
+      'tenantSlug': 'hanmac',
+      'department': 'Engineering',
+      'permissions': {
+        'directory': true,
+        'organization': true,
+        'favoritesSync': false,
+      },
+    });
+
+    expect(user.permissions.directory, isTrue);
+    expect(user.permissions.favoritesSync, isFalse);
+    expect(user.toEmployee().department, 'Engineering');
+  });
+}
diff --git a/app/test/models/directory_models_test.dart b/app/test/models/directory_models_test.dart
new file mode 100644
index 0000000..5dfb513
--- /dev/null
+++ b/app/test/models/directory_models_test.dart
@@ -0,0 +1,63 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:tdc114plus/src/features/directory/domain/employee.dart';
+
+void main() {
+  test('EmployeeListResponse parses paginated employee list', () {
+    final response = EmployeeListResponse.fromJson({
+      'items': [
+        {
+          'id': 'user-uuid',
+          'name': 'User One',
+          'phoneNumber': '+821012345678',
+          'phoneDisplay': '010-1234-5678',
+          'email': 'user@example.com',
+          'tenantId': 'tenant-uuid',
+          'tenantName': 'Hanmac',
+          'tenantSlug': 'hanmac',
+          'department': 'Engineering',
+          'grade': 'Lead',
+          'position': 'Manager',
+          'jobTitle': 'Developer',
+          'status': 'active',
+          'profileImageUrl': null,
+          'sortOrder': 100,
+        },
+      ],
+      'limit': 50,
+      'offset': 0,
+      'total': 1,
+      'nextCursor': '',
+    });
+
+    expect(response.items, hasLength(1));
+    expect(response.items.first.phoneDisplay, '010-1234-5678');
+    expect(response.total, 1);
+  });
+
+  test('EmployeeDetail parses joined tenants and available actions', () {
+    final detail = EmployeeDetail.fromJson({
+      'id': 'user-uuid',
+      'name': 'User One',
+      'phoneNumber': '+821012345678',
+      'email': 'user@example.com',
+      'tenantId': 'tenant-uuid',
+      'tenantName': 'Hanmac',
+      'tenantSlug': 'hanmac',
+      'joinedTenants': [
+        {
+          'id': 'tenant-uuid',
+          'name': 'Hanmac',
+          'slug': 'hanmac',
+          'type': 'COMPANY',
+          'parentId': 'root-tenant-uuid',
+        },
+      ],
+      'status': 'active',
+      'actions': {'call': true, 'sms': true, 'email': true},
+    });
+
+    expect(detail.joinedTenants.first.type, 'COMPANY');
+    expect(detail.actions.call, isTrue);
+    expect(detail.actions.sms, isTrue);
+  });
+}
diff --git a/app/test/models/organization_models_test.dart b/app/test/models/organization_models_test.dart
new file mode 100644
index 0000000..37dc025
--- /dev/null
+++ b/app/test/models/organization_models_test.dart
@@ -0,0 +1,62 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:tdc114plus/src/features/organization/domain/organization_models.dart';
+
+void main() {
+  test('TenantListResponse parses organization filter tenants', () {
+    final response = TenantListResponse.fromJson({
+      'items': [
+        {
+          'id': 'tenant-uuid',
+          'name': 'Hanmac',
+          'slug': 'hanmac',
+          'type': 'COMPANY',
+          'parentId': 'family-root',
+          'memberCount': 120,
+          'totalMemberCount': 350,
+        },
+      ],
+      'generatedAt': '2026-07-02T12:00:00Z',
+    });
+
+    expect(response.items.first.slug, 'hanmac');
+    expect(response.items.first.totalMemberCount, 350);
+  });
+
+  test('OrgChartSnapshot parses tenants, employees, and cache metadata', () {
+    final snapshot = OrgChartSnapshot.fromJson({
+      'tenants': [
+        {
+          'id': 'tenant-uuid',
+          'name': 'Engineering',
+          'slug': 'engineering',
+          'type': 'ORGANIZATION',
+          'parentId': 'company-tenant-uuid',
+          'memberCount': 12,
+          'totalMemberCount': 38,
+        },
+      ],
+      'employees': [
+        {
+          'id': 'user-uuid',
+          'name': 'User One',
+          'phoneNumber': '+821012345678',
+          'phoneDisplay': '010-1234-5678',
+          'tenantId': 'tenant-uuid',
+          'tenantName': 'Engineering',
+          'tenantSlug': 'engineering',
+          'department': 'Engineering',
+          'grade': 'Lead',
+          'position': 'Manager',
+          'jobTitle': 'Developer',
+          'status': 'active',
+        },
+      ],
+      'generatedAt': '2026-07-02T12:00:00Z',
+      'cache': {'source': 'redis', 'hit': true, 'ttlSeconds': 300},
+    });
+
+    expect(snapshot.tenants.first.type, 'ORGANIZATION');
+    expect(snapshot.employees.first.tenantSlug, 'engineering');
+    expect(snapshot.cache?.source, 'redis');
+  });
+}
diff --git a/docs/tdc114plus-work-progress-timetable-2026-07-02.md b/docs/tdc114plus-work-progress-timetable-2026-07-02.md
index ac8bc4c..b56eaec 100644
--- a/docs/tdc114plus-work-progress-timetable-2026-07-02.md
+++ b/docs/tdc114plus-work-progress-timetable-2026-07-02.md
@@ -45,8 +45,8 @@
 | 11 | tdc114plus 개발 정책 정리 | 완료 | Baron SSO API 생성 우선 원칙, VS Code 기반 AI 개발 방식, Flutter/플랫폼 구현 원칙 정리 | `docs/tdc114plus-development-policy-2026-07-02.md` |
 | 12 | API 계약 정리 | 완료 | Baron SSO 로그인 API, orgFront 직원/조직 API 계약 정리 | `docs/tdc114plus-api-contract-2026-07-02.md` |
 | 13 | API 계약 검토 및 확정 | 완료 | API 계약 초안의 추가 확인사항 검토 후 1차 구현 기준 확정 | `docs/tdc114plus-api-contract-2026-07-02.md` |
-| 14 | 데이터 모델 설계 | 다음 작업 | 직원, 조직, 가족사, 즐겨찾기 모델 정의 | Dart model |
-| 15 | Mock 데이터 기반 화면 확장 | 대기 | 직원목록, 검색, 가족사 필터, 조직도 화면을 mock 데이터로 우선 구현 | 동작 가능한 UI |
+| 14 | 데이터 모델 설계 | 완료 | 직원, 조직, 가족사, 즐겨찾기 모델 정의 | Dart model 및 model test |
+| 15 | Mock 데이터 기반 화면 확장 | 다음 작업 | 직원목록, 검색, 가족사 필터, 조직도 화면을 mock 데이터로 우선 구현 | 동작 가능한 UI |
 | 16 | Baron SSO 로그인 연동 | 대기 | 전화번호 입력 후 SSO 등록 인원 여부 확인 연동 | 로그인 client/repository |
 | 17 | orgFront 데이터 연동 | 대기 | 직원/조직 데이터 API 연동 | directory/organization client |
 | 18 | 전화/문자 액션 구현 | 대기 | `url_launcher` 기반 전화걸기/문자보내기 구현 | 연락 액션 |
@@ -62,15 +62,15 @@
 | Phase 2 | 완료 | Baron SSO 참조 기준 확정 및 API 계약 준비 | 공식 `origin/dev` 기준 확인, API 개발 worktree 생성, Baron Safe 참고 정책 확인 | `feature/tdc114plus-api` worktree 생성 |
 | Phase 2-1 | 완료 | API 계약 초안 작성 | 개발 정책 확인 후 SSO 로그인 API, orgFront 직원/조직 API, 응답 필드, 오류 정책 정리 | API 계약 초안 작성 완료 |
 | Phase 2-2 | 완료 | API 계약 검토 및 확정 | token 종류, 전화번호 로그인 보안 수준, 개인정보 마스킹 범위, 즐겨찾기 동기화 여부 확인 | API 계약 확정본 |
-| Phase 2-3 | 다음 | Dart 데이터 모델 설계 | 확정된 API 계약 기준으로 직원, 조직, 로그인, 즐겨찾기 model 정의 | model 초안 |
-| Phase 3 | 이후 | Mock 기반 1차 UI 완성 | 직원목록, 검색, 가족사 필터, 조직도, 상세 화면 구성 | API 없이 화면 흐름 확인 가능 |
+| Phase 2-3 | 완료 | Dart 데이터 모델 설계 | 확정된 API 계약 기준으로 직원, 조직, 로그인, 즐겨찾기 model 정의 | analyze/test 통과 |
+| Phase 3 | 다음 | Mock 기반 1차 UI 완성 | 직원목록, 검색, 가족사 필터, 조직도, 상세 화면 구성 | API 없이 화면 흐름 확인 가능 |
 | Phase 4 | 이후 | 실제 API 연동 | SSO 로그인, orgFront 직원/조직 데이터 연동 | 등록 사용자 로그인 및 직원목록 조회 |
 | Phase 5 | 이후 | 핵심 액션 완성 | 전화걸기, 문자보내기, 즐겨찾기 저장 | 1차 기본 기능 수동 검증 |
 | Phase 6 | 이후 | 빌드/배포 준비 | Android debug APK, README 실행법, 잔여 이슈 정리 | APK 빌드 성공 |
 
 ## 4. 다음 작업 판단
 
-현재 다음 작업은 **Phase 2-3: Dart 데이터 모델 설계**이다.
+현재 다음 작업은 **Phase 3: Mock 기반 1차 UI 완성**이다.
 
 공식 Baron SSO `origin/dev` 기준의 API 개발용 worktree는 `/home/ubuntu/workspace/baron-sso-tdc114plus-api`에 생성 완료했다. 기존 `baron-sso` 작업 브랜치는 수정/미추적 파일이 많으므로 직접 merge/rebase하지 않는다.
 
@@ -133,4 +133,4 @@ git -C /home/ubuntu/workspace/tdc114plus log --oneline origin/main -n 10
 git -C /home/ubuntu/workspace/tdc114plus status --short --branch
 ```
 
-현재 문서 기준 다음 작업은 `Phase 2-3: Dart 데이터 모델 설계`이다.
+현재 문서 기준 다음 작업은 `Phase 3: Mock 기반 1차 UI 완성`이다.