feat: simplify RBAC roles and remove dev role switcher

- Simplified RBAC system to two roles: super_admin and user.
- Removed tenant_admin and rp_admin roles across backend and frontend.
- Removed Dev Role Switcher feature from adminfront.
- Updated all handlers, middlewares, and navigation to reflect the new role model.
- Fixed backend build errors and updated tests.

backend/internal/domain/user.go

@@ -13,10 +13,8 @@ import (
 
 // User roles
 const (
-	RoleSuperAdmin  = "super_admin"  // 시스템 전역 관리자
-	RoleTenantAdmin = "tenant_admin" // 테넌트 관리자
-	RoleRPAdmin     = "rp_admin"     // 특정 앱(RP) 관리자
-	RoleUser        = "user"         // 일반 사용자
+	RoleSuperAdmin = "super_admin" // 시스템 전역 관리자
+	RoleUser       = "user"        // 일반 사용자
 )
 
 // User statuses
@@ -98,12 +96,10 @@ func NormalizeRole(role string) string {
 func NormalizeRoleAlias(role string) (string, bool) {
 	normalized := strings.ToLower(strings.TrimSpace(role))
 	switch normalized {
-	case RoleSuperAdmin, RoleTenantAdmin, RoleRPAdmin, RoleUser:
+	case RoleSuperAdmin, RoleUser:
 		return normalized, true
-	case "tenant_member", "member":
+	case "tenant_admin", "rp_admin", "tenant_member", "member", "admin", "tenantadmin", "tenant-admin":
 		return RoleUser, true
-	case "admin", "tenantadmin", "tenant-admin":
-		return RoleTenantAdmin, true
 	case "superadmin", "super-admin":
 		return RoleSuperAdmin, true
 	default:
@@ -118,7 +114,7 @@ type User struct {
 	PasswordHash    *string        `gorm:"column:password_hash" json:"-"`
 	Name            string         `gorm:"column:name;not null" json:"name"`
 	Phone           string         `gorm:"column:phone" json:"phone"`
-	Role            string         `gorm:"column:role;default:'user';not null" json:"role"` // super_admin, tenant_admin, rp_admin, user
+	Role            string         `gorm:"column:role;default:'user';not null" json:"role"` // super_admin, user
 	AffiliationType string         `gorm:"column:affiliation_type" json:"affiliationType"`
 	CompanyCode     string         `gorm:"-" json:"companyCode,omitempty"`
 	CompanyCodes    pq.StringArray `gorm:"-" json:"companyCodes,omitempty"`

backend/internal/domain/user_test.go

@@ -9,14 +9,14 @@ func TestNormalizeRole(t *testing.T) {
 		want string
 	}{
 		{name: "super admin unchanged", in: "super_admin", want: RoleSuperAdmin},
-		{name: "tenant admin unchanged", in: "tenant_admin", want: RoleTenantAdmin},
-		{name: "rp admin unchanged", in: "rp_admin", want: RoleRPAdmin},
+		{name: "tenant admin mapped to user", in: "tenant_admin", want: RoleUser},
+		{name: "rp admin mapped to user", in: "rp_admin", want: RoleUser},
 		{name: "user unchanged", in: "user", want: RoleUser},
 		{name: "super admin hyphen alias", in: "super-admin", want: RoleSuperAdmin},
 		{name: "super admin compact alias", in: "superadmin", want: RoleSuperAdmin},
-		{name: "legacy admin", in: "admin", want: RoleTenantAdmin},
+		{name: "legacy admin mapped to user", in: "admin", want: RoleUser},
 		{name: "legacy tenant member", in: "tenant_member", want: RoleUser},
-		{name: "trim and lower", in: "  ADMIN  ", want: RoleTenantAdmin},
+		{name: "trim and lower", in: "  ADMIN  ", want: RoleUser},
 		{name: "unknown role mapped to user", in: "custom_role", want: RoleUser},
 		{name: "empty string mapped to user", in: "   ", want: RoleUser},
 	}