Enhance role-check system with stricter checks (#15392)

## Overview

This PR strengthens our permission system by introducing more granular
role-based access control across the platform.

## Changes

### New Permissions Added
- **Applications** - Control who can install and manage applications
- **Layouts** - Control who can customize page layouts and UI structure
- **AI** - Control access to AI features and agents
- **Upload File** - Separate permission for file uploads
- **Download File** - Separate permission for file downloads (frontend
visibility)

### Security Enhancements
- Implemented whitelist-based validation for workspace field updates
- Added explicit permission guards to core entity resolvers
- Enhanced ESLint rule to enforce permission checks on all mutations
- Created `CustomPermissionGuard` and `NoPermissionGuard` for better
code documentation

### Affected Components
- Core entity resolvers: webhooks, files, domains, applications,
layouts, postgres credentials
- Workspace update mutations now use whitelist validation
- Settings UI updated with new permission controls

### Developer Experience
- ESLint now catches missing permission guards during development
- Explicit guard markers make permission requirements clear in code
review
- Comprehensive test coverage for new permission logic

## Testing
- ✅ All TypeScript type checks pass
- ✅ ESLint validation passes
- ✅ New permission guards properly enforced
- ✅ Frontend UI displays new permissions correctly

## Migration Notes
Existing workspaces will need to assign the new permissions to roles as
needed. By default, all new permissions are set to `false` for non-admin
roles.

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

@@ -5,6 +5,7 @@ import { AuthModule } from 'src/engine/core-modules/auth/auth.module';
 import { WebhookEntity } from 'src/engine/core-modules/webhook/webhook.entity';
 import { WebhookResolver } from 'src/engine/core-modules/webhook/webhook.resolver';
 import { WebhookService } from 'src/engine/core-modules/webhook/webhook.service';
+import { PermissionsModule } from 'src/engine/metadata-modules/permissions/permissions.module';
 import { WorkspaceCacheStorageModule } from 'src/engine/workspace-cache-storage/workspace-cache-storage.module';
 
 import { WebhookController } from './controllers/webhook.controller';
@@ -13,6 +14,7 @@ import { WebhookController } from './controllers/webhook.controller';
   imports: [
     TypeOrmModule.forFeature([WebhookEntity]),
     AuthModule,
+    PermissionsModule,
     WorkspaceCacheStorageModule,
   ],
   providers: [WebhookService, WebhookResolver],

packages/twenty-server/src/engine/core-modules/webhook/webhook.resolver.ts

@@ -10,13 +10,18 @@ import { UpdateWebhookInput } from 'src/engine/core-modules/webhook/dtos/update-
 import { webhookGraphqlApiExceptionHandler } from 'src/engine/core-modules/webhook/utils/webhook-graphql-api-exception-handler.util';
 import { WorkspaceEntity } from 'src/engine/core-modules/workspace/workspace.entity';
 import { AuthWorkspace } from 'src/engine/decorators/auth/auth-workspace.decorator';
+import { SettingsPermissionsGuard } from 'src/engine/guards/settings-permissions.guard';
 import { WorkspaceAuthGuard } from 'src/engine/guards/workspace-auth.guard';
+import { PermissionFlagType } from 'src/engine/metadata-modules/permissions/constants/permission-flag-type.constants';
 
 import { WebhookEntity } from './webhook.entity';
 import { WebhookService } from './webhook.service';
 
 @Resolver(() => WebhookEntity)
-@UseGuards(WorkspaceAuthGuard)
+@UseGuards(
+  WorkspaceAuthGuard,
+  SettingsPermissionsGuard(PermissionFlagType.API_KEYS_AND_WEBHOOKS),
+)
 export class WebhookResolver {
   constructor(private readonly webhookService: WebhookService) {}