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-front/src/modules/activities/tasks/components/AddTaskButton.tsx

@@ -3,6 +3,7 @@ import { type ActivityTargetableObject } from '@/activities/types/ActivityTarget
 import { useObjectMetadataItem } from '@/object-metadata/hooks/useObjectMetadataItem';
 import { CoreObjectNameSingular } from '@/object-metadata/types/CoreObjectNameSingular';
 import { useObjectPermissionsForObject } from '@/object-record/hooks/useObjectPermissionsForObject';
+import { t } from '@lingui/core/macro';
 import { IconPlus } from 'twenty-ui/display';
 import { Button } from 'twenty-ui/input';
 
@@ -34,7 +35,7 @@ export const AddTaskButton = ({
       Icon={IconPlus}
       size="small"
       variant="secondary"
-      title="Add task"
+      title={t`Add task`}
       onClick={() =>
         openCreateActivity({
           targetableObjects: [activityTargetableObject],