fix: Add reserved subdomains constant and update validation on generateSubdomain (#15217)

## Description

Fixes #15160 

- Moved the reserved subdomains to a separate shared constant file:
`packages/twenty-server/src/engine/core-modules/workspace/constants/reserved-subdomains.constant.ts`
- Updated the validation while generating subdomain to check if the
extracted subdomain (from email or display name) is reserved
- When a reserved subdomain is detected, the server will automatically
fall back to a random subdomain

---------

Co-authored-by: Naineel Soyantar <naineelsoyantar@gmail.com>
Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-server/src/engine/core-modules/admin-panel/__tests__/admin-panel.service.spec.ts

@@ -6,7 +6,7 @@ import axios from 'axios';
 import { AdminPanelService } from 'src/engine/core-modules/admin-panel/admin-panel.service';
 import { AuditService } from 'src/engine/core-modules/audit/services/audit.service';
 import { LoginTokenService } from 'src/engine/core-modules/auth/token/services/login-token.service';
-import { DomainManagerService } from 'src/engine/core-modules/domain-manager/services/domain-manager.service';
+import { WorkspaceDomainsService } from 'src/engine/core-modules/domain/workspace-domains/services/workspace-domains.service';
 import { FileService } from 'src/engine/core-modules/file/services/file.service';
 import { TwentyConfigService } from 'src/engine/core-modules/twenty-config/twenty-config.service';
 import { User } from 'src/engine/core-modules/user/user.entity';
@@ -59,7 +59,7 @@ describe('AdminPanelService', () => {
           },
         },
         {
-          provide: DomainManagerService,
+          provide: WorkspaceDomainsService,
           useValue: {
             getWorkspaceUrls: jest.fn().mockReturnValue({
               customUrl: undefined,

packages/twenty-server/src/engine/core-modules/admin-panel/admin-panel.module.ts

@@ -8,7 +8,7 @@ import { AdminPanelResolver } from 'src/engine/core-modules/admin-panel/admin-pa
 import { AdminPanelService } from 'src/engine/core-modules/admin-panel/admin-panel.service';
 import { AuditModule } from 'src/engine/core-modules/audit/audit.module';
 import { AuthModule } from 'src/engine/core-modules/auth/auth.module';
-import { DomainManagerModule } from 'src/engine/core-modules/domain-manager/domain-manager.module';
+import { WorkspaceDomainsModule } from 'src/engine/core-modules/domain/workspace-domains/workspace-domains.module';
 import { FeatureFlagModule } from 'src/engine/core-modules/feature-flag/feature-flag.module';
 import { FileModule } from 'src/engine/core-modules/file/file.module';
 import { HealthModule } from 'src/engine/core-modules/health/health.module';
@@ -22,8 +22,8 @@ import { PermissionsModule } from 'src/engine/metadata-modules/permissions/permi
   imports: [
     TypeOrmModule.forFeature([User]),
     AuthModule,
-    DomainManagerModule,
     FileModule,
+    WorkspaceDomainsModule,
     HealthModule,
     RedisClientModule,
     TerminusModule,

packages/twenty-server/src/engine/core-modules/admin-panel/admin-panel.service.ts

@@ -12,13 +12,11 @@ import { type ConfigVariablesGroupDataDTO } from 'src/engine/core-modules/admin-
 import { type ConfigVariablesOutput } from 'src/engine/core-modules/admin-panel/dtos/config-variables.output';
 import { type UserLookup } from 'src/engine/core-modules/admin-panel/dtos/user-lookup.entity';
 import { type VersionInfoDTO } from 'src/engine/core-modules/admin-panel/dtos/version-info.dto';
-import { AuditService } from 'src/engine/core-modules/audit/services/audit.service';
 import {
   AuthException,
   AuthExceptionCode,
 } from 'src/engine/core-modules/auth/auth.exception';
-import { LoginTokenService } from 'src/engine/core-modules/auth/token/services/login-token.service';
-import { DomainManagerService } from 'src/engine/core-modules/domain-manager/services/domain-manager.service';
+import { WorkspaceDomainsService } from 'src/engine/core-modules/domain/workspace-domains/services/workspace-domains.service';
 import { FeatureFlagKey } from 'src/engine/core-modules/feature-flag/enums/feature-flag-key.enum';
 import { type FeatureFlag } from 'src/engine/core-modules/feature-flag/feature-flag.entity';
 import { FileService } from 'src/engine/core-modules/file/services/file.service';
@@ -32,10 +30,8 @@ import { userValidator } from 'src/engine/core-modules/user/user.validate';
 @Injectable()
 export class AdminPanelService {
   constructor(
-    private readonly loginTokenService: LoginTokenService,
     private readonly twentyConfigService: TwentyConfigService,
-    private readonly domainManagerService: DomainManagerService,
-    private readonly auditService: AuditService,
+    private readonly workspaceDomainsService: WorkspaceDomainsService,
     private readonly fileService: FileService,
     @InjectRepository(User)
     private readonly userRepository: Repository<User>,
@@ -90,7 +86,7 @@ export class AdminPanelService {
             })
           : userWorkspace.workspace.logo,
         allowImpersonation: userWorkspace.workspace.allowImpersonation,
-        workspaceUrls: this.domainManagerService.getWorkspaceUrls({
+        workspaceUrls: this.workspaceDomainsService.getWorkspaceUrls({
           subdomain: userWorkspace.workspace.subdomain,
           customDomain: userWorkspace.workspace.customDomain,
           isCustomDomainEnabled: userWorkspace.workspace.isCustomDomainEnabled,