web: migrate health notifications to js_interop; add browser hook

- Replace dart:js with package:js in health_check_service_web.dart\n- Implement showHealthCheckNotification in web/index.html\n- Pin js dependency to ^0.6.7 for flutter_secure_storage_web compatibility

auth: harden AuthInterceptor + tests

- Allow overrideAuthRepository injection for testing\n- Normalize imports to package: paths\n- Add unit test covering token attach, 401→refresh→retry, and failure path\n- Add integration test skeleton gated by env vars

ui/data: map User.companyName to list column

- Add companyName to domain User\n- Map UserDto.company?.name\n- Render companyName in user_list

cleanup: remove legacy equipment table + unused code; minor warnings

- Remove _buildFlexibleTable and unused helpers\n- Remove unused zipcode details and cache retry constant\n- Fix null-aware and non-null assertions\n- Address child-last warnings in administrator dialog

docs: update AGENTS.md session context

lib/models/user_model.freezed.dart

@@ -32,6 +32,9 @@ mixin _$User {
   /// 전화번호 (선택, "010-1234-5678" 형태)
   String? get phone => throw _privateConstructorUsedError;
 
+  /// 소속 회사명 (UI 표시용, 백엔드 미저장)
+  String? get companyName => throw _privateConstructorUsedError;
+
   /// UI용 필드들 (백엔드 저장하지 않음)
   String get username => throw _privateConstructorUsedError; // UI 호환용
   UserRole get role => throw _privateConstructorUsedError; // UI 호환용
@@ -58,6 +61,7 @@ abstract class $UserCopyWith<$Res> {
       String name,
       String? email,
       String? phone,
+      String? companyName,
       String username,
       UserRole role,
       bool isActive,
@@ -84,6 +88,7 @@ class _$UserCopyWithImpl<$Res, $Val extends User>
     Object? name = null,
     Object? email = freezed,
     Object? phone = freezed,
+    Object? companyName = freezed,
     Object? username = null,
     Object? role = null,
     Object? isActive = null,
@@ -107,6 +112,10 @@ class _$UserCopyWithImpl<$Res, $Val extends User>
           ? _value.phone
           : phone // ignore: cast_nullable_to_non_nullable
               as String?,
+      companyName: freezed == companyName
+          ? _value.companyName
+          : companyName // ignore: cast_nullable_to_non_nullable
+              as String?,
       username: null == username
           ? _value.username
           : username // ignore: cast_nullable_to_non_nullable
@@ -143,6 +152,7 @@ abstract class _$$UserImplCopyWith<$Res> implements $UserCopyWith<$Res> {
       String name,
       String? email,
       String? phone,
+      String? companyName,
       String username,
       UserRole role,
       bool isActive,
@@ -166,6 +176,7 @@ class __$$UserImplCopyWithImpl<$Res>
     Object? name = null,
     Object? email = freezed,
     Object? phone = freezed,
+    Object? companyName = freezed,
     Object? username = null,
     Object? role = null,
     Object? isActive = null,
@@ -189,6 +200,10 @@ class __$$UserImplCopyWithImpl<$Res>
           ? _value.phone
           : phone // ignore: cast_nullable_to_non_nullable
               as String?,
+      companyName: freezed == companyName
+          ? _value.companyName
+          : companyName // ignore: cast_nullable_to_non_nullable
+              as String?,
       username: null == username
           ? _value.username
           : username // ignore: cast_nullable_to_non_nullable
@@ -221,6 +236,7 @@ class _$UserImpl implements _User {
       required this.name,
       this.email,
       this.phone,
+      this.companyName,
       this.username = '',
       this.role = UserRole.staff,
       this.isActive = true,
@@ -246,6 +262,10 @@ class _$UserImpl implements _User {
   @override
   final String? phone;
 
+  /// 소속 회사명 (UI 표시용, 백엔드 미저장)
+  @override
+  final String? companyName;
+
   /// UI용 필드들 (백엔드 저장하지 않음)
   @override
   @JsonKey()
@@ -267,7 +287,7 @@ class _$UserImpl implements _User {
 
   @override
   String toString() {
-    return 'User(id: $id, name: $name, email: $email, phone: $phone, username: $username, role: $role, isActive: $isActive, createdAt: $createdAt, updatedAt: $updatedAt)';
+    return 'User(id: $id, name: $name, email: $email, phone: $phone, companyName: $companyName, username: $username, role: $role, isActive: $isActive, createdAt: $createdAt, updatedAt: $updatedAt)';
   }
 
   @override
@@ -279,6 +299,8 @@ class _$UserImpl implements _User {
             (identical(other.name, name) || other.name == name) &&
             (identical(other.email, email) || other.email == email) &&
             (identical(other.phone, phone) || other.phone == phone) &&
+            (identical(other.companyName, companyName) ||
+                other.companyName == companyName) &&
             (identical(other.username, username) ||
                 other.username == username) &&
             (identical(other.role, role) || other.role == role) &&
@@ -292,8 +314,8 @@ class _$UserImpl implements _User {
 
   @JsonKey(includeFromJson: false, includeToJson: false)
   @override
-  int get hashCode => Object.hash(runtimeType, id, name, email, phone, username,
-      role, isActive, createdAt, updatedAt);
+  int get hashCode => Object.hash(runtimeType, id, name, email, phone,
+      companyName, username, role, isActive, createdAt, updatedAt);
 
   /// Create a copy of User
   /// with the given fields replaced by the non-null parameter values.
@@ -317,6 +339,7 @@ abstract class _User implements User {
       required final String name,
       final String? email,
       final String? phone,
+      final String? companyName,
       final String username,
       final UserRole role,
       final bool isActive,
@@ -341,6 +364,10 @@ abstract class _User implements User {
   @override
   String? get phone;
 
+  /// 소속 회사명 (UI 표시용, 백엔드 미저장)
+  @override
+  String? get companyName;
+
   /// UI용 필드들 (백엔드 저장하지 않음)
   @override
   String get username; // UI 호환용