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/workspace-manager/standard-objects-prefill-data/prefill-core-views.ts

@@ -10,6 +10,7 @@ import { ViewEntity } from 'src/engine/metadata-modules/view/entities/view.entit
 import { ViewKey } from 'src/engine/metadata-modules/view/enums/view-key.enum';
 import { ViewOpenRecordIn } from 'src/engine/metadata-modules/view/enums/view-open-record-in';
 import { ViewType } from 'src/engine/metadata-modules/view/enums/view-type.enum';
+import { ViewVisibility } from 'src/engine/metadata-modules/view/enums/view-visibility.enum';
 import { ViewOpenRecordInType } from 'src/engine/metadata-modules/view/types/view-open-record-in-type.type';
 import { type WorkspaceEntityManager } from 'src/engine/twenty-orm/entity-manager/workspace-entity-manager';
 import { shouldSeedWorkspaceFavorite } from 'src/engine/utils/should-seed-workspace-favorite';
@@ -140,6 +141,7 @@ export const createCoreViews = async (
       kanbanAggregateOperationFieldMetadataId,
       workspaceId,
       anyFieldFilterValue: null,
+      visibility: ViewVisibility.WORKSPACE,
     }),
   );