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/view-group/services/tests/view-group.service.spec.ts

@@ -308,12 +308,18 @@ describe('ViewGroupService', () => {
       const id = 'view-group-id';
       const workspaceId = 'workspace-id';
 
-      jest.spyOn(viewGroupService, 'findById').mockResolvedValue(mockViewGroup);
+      jest
+        .spyOn(viewGroupRepository, 'findOne')
+        .mockResolvedValue(mockViewGroup);
       jest.spyOn(viewGroupRepository, 'delete').mockResolvedValue({} as any);
 
       const result = await viewGroupService.destroy(id, workspaceId);
 
-      expect(viewGroupService.findById).toHaveBeenCalledWith(id, workspaceId);
+      expect(viewGroupRepository.findOne).toHaveBeenCalledWith({
+        where: { id, workspaceId },
+        relations: ['workspace', 'view'],
+        withDeleted: true,
+      });
       expect(viewGroupRepository.delete).toHaveBeenCalledWith(id);
       expect(result).toEqual(mockViewGroup);
     });

packages/twenty-server/src/engine/metadata-modules/view-group/services/view-group.service.ts

@@ -169,7 +169,14 @@ export class ViewGroupService {
   }
 
   async destroy(id: string, workspaceId: string): Promise<ViewGroupEntity> {
-    const viewGroup = await this.findById(id, workspaceId);
+    const viewGroup = await this.viewGroupRepository.findOne({
+      where: {
+        id,
+        workspaceId,
+      },
+      relations: ['workspace', 'view'],
+      withDeleted: true,
+    });
 
     if (!isDefined(viewGroup)) {
       throw new ViewGroupException(