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/metadata-modules/remote-server/remote-server.resolver.ts

@@ -5,7 +5,9 @@ import { PreventNestToAutoLogGraphqlErrorsFilter } from 'src/engine/core-modules
 import { ResolverValidationPipe } from 'src/engine/core-modules/graphql/pipes/resolver-validation.pipe';
 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 { CreateRemoteServerInput } from 'src/engine/metadata-modules/remote-server/dtos/create-remote-server.input';
 import { RemoteServerIdInput } from 'src/engine/metadata-modules/remote-server/dtos/remote-server-id.input';
 import { RemoteServerTypeInput } from 'src/engine/metadata-modules/remote-server/dtos/remote-server-type.input';
@@ -25,6 +27,7 @@ export class RemoteServerResolver {
   ) {}
 
   @Mutation(() => RemoteServerDTO)
+  @UseGuards(SettingsPermissionsGuard(PermissionFlagType.DATA_MODEL))
   async createOneRemoteServer(
     @Args('input') input: CreateRemoteServerInput<RemoteServerType>,
     @AuthWorkspace() { id: workspaceId }: WorkspaceEntity,
@@ -40,6 +43,7 @@ export class RemoteServerResolver {
   }
 
   @Mutation(() => RemoteServerDTO)
+  @UseGuards(SettingsPermissionsGuard(PermissionFlagType.DATA_MODEL))
   async updateOneRemoteServer(
     @Args('input') input: UpdateRemoteServerInput<RemoteServerType>,
     @AuthWorkspace() { id: workspaceId }: WorkspaceEntity,
@@ -55,6 +59,7 @@ export class RemoteServerResolver {
   }
 
   @Mutation(() => RemoteServerDTO)
+  @UseGuards(SettingsPermissionsGuard(PermissionFlagType.DATA_MODEL))
   async deleteOneRemoteServer(
     @Args('input') { id }: RemoteServerIdInput,
     @AuthWorkspace() { id: workspaceId }: WorkspaceEntity,