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/exceptions/view.exception.ts

@@ -18,6 +18,8 @@ export class ViewException extends CustomException {
 export enum ViewExceptionCode {
   VIEW_NOT_FOUND = 'VIEW_NOT_FOUND',
   INVALID_VIEW_DATA = 'INVALID_VIEW_DATA',
+  VIEW_CREATE_PERMISSION_DENIED = 'VIEW_CREATE_PERMISSION_DENIED',
+  VIEW_MODIFY_PERMISSION_DENIED = 'VIEW_MODIFY_PERMISSION_DENIED',
 }
 
 export enum ViewExceptionMessageKey {
@@ -25,6 +27,8 @@ export enum ViewExceptionMessageKey {
   OBJECT_METADATA_ID_REQUIRED = 'OBJECT_METADATA_ID_REQUIRED',
   VIEW_NOT_FOUND = 'VIEW_NOT_FOUND',
   INVALID_VIEW_DATA = 'INVALID_VIEW_DATA',
+  VIEW_CREATE_PERMISSION_DENIED = 'VIEW_CREATE_PERMISSION_DENIED',
+  VIEW_MODIFY_PERMISSION_DENIED = 'VIEW_MODIFY_PERMISSION_DENIED',
 }
 
 export const generateViewExceptionMessage = (
@@ -40,6 +44,10 @@ export const generateViewExceptionMessage = (
       return `View${id ? ` (id: ${id})` : ''} not found`;
     case ViewExceptionMessageKey.INVALID_VIEW_DATA:
       return `Invalid view data${id ? ` for view id: ${id}` : ''}`;
+    case ViewExceptionMessageKey.VIEW_CREATE_PERMISSION_DENIED:
+      return 'You do not have permission to create workspace-level views';
+    case ViewExceptionMessageKey.VIEW_MODIFY_PERMISSION_DENIED:
+      return 'You do not have permission to modify this view';
     default:
       assertUnreachable(key);
   }
@@ -53,5 +61,9 @@ export const generateViewUserFriendlyExceptionMessage = (
       return msg`WorkspaceId is required to create a view.`;
     case ViewExceptionMessageKey.OBJECT_METADATA_ID_REQUIRED:
       return msg`ObjectMetadataId is required to create a view.`;
+    case ViewExceptionMessageKey.VIEW_CREATE_PERMISSION_DENIED:
+      return msg`You don't have permission to create workspace-level views.`;
+    case ViewExceptionMessageKey.VIEW_MODIFY_PERMISSION_DENIED:
+      return msg`You don't have permission to modify this view.`;
   }
 };