Add twenty/folder-structure custom oxlint rule (#18467)

## Summary

- Re-implements `eslint-plugin-project-structure`'s folder structure
enforcement as a custom oxlint rule (`twenty/folder-structure`),
recovering functionality lost during the ESLint → Oxlint migration
- Validates `src/modules/` structure: kebab-case module folder names,
allowed subdirectories (hooks, utils, components, states, types,
graphql, etc.), hook file naming (`use{PascalCase}.(ts|tsx)`), util file
naming (`{camelCase}.(ts|tsx)`), and module nesting depth (max 4 levels)
- Enabled as `"warn"` in twenty-front with 403 pre-existing violations
to address incrementally

## What the rule checks

| Check | Example valid | Example invalid |
|-------|-------------|-----------------|
| Module names kebab-case | `object-record/` | `graphWidgetBarChart/` |
| Allowed subdirs only | `hooks/`, `components/`, `utils/` |
`random-stuff/` |
| Hook file naming | `useMyHook.ts` | `badName.ts` |
| Util file naming | `buildQuery.ts` | `build-query.ts` |
| Max nesting depth 4 | `a/b/c/d/hooks/` | `a/b/c/d/e/hooks/` |
| Utils kebab-case subfolders | `utils/cron-to-human/` |
`utils/camelCase/` |

## Pre-existing violations (403 total)

| Category | Count | Examples |
|----------|-------|---------|
| Non-kebab-case module names | 160 | `graphWidgetBarChart`,
`AIChatThreads` |
| Module depth > 4 | 215 |
`settings/roles/role-permissions/object-level-permissions/field-permissions`
|
| Util file naming | 22 | `.util.ts` suffix, kebab-case, PascalCase
filenames |
| Misc (hooks, tests) | 6 | Non-hook files in hooks/, folders in test
dirs |

packages/twenty-front/src/modules/settings/roles/role-assignment/components/SettingsRoleAssignment.tsx

@@ -28,7 +28,7 @@ import { useNavigateSettings } from '~/hooks/useNavigateSettings';
 import { type PartialWorkspaceMember } from '@/settings/roles/types/RoleWithPartialMembers';
 import { ROLE_ASSIGNMENT_CONFIRMATION_MODAL_ID } from '@/settings/roles/role-assignment/constants/RoleAssignmentConfirmationModalId';
 import { ROLE_TARGET_CONFIG } from '@/settings/roles/role-assignment/constants/RoleTargetConfig';
-import { buildRoleMaps } from '@/settings/roles/role-assignment/utils/build-role-maps';
+import { buildRoleMaps } from '@/settings/roles/role-assignment/utils/buildRoleMaps';
 
 type SettingsRoleAssignmentProps = {
   roleId: string;

packages/twenty-front/src/modules/settings/roles/role-assignment/utils/__tests__/buildRoleMaps.test.ts

@@ -1,4 +1,4 @@
-import { buildRoleMaps } from '@/settings/roles/role-assignment/utils/build-role-maps';
+import { buildRoleMaps } from '@/settings/roles/role-assignment/utils/buildRoleMaps';
 
 describe('buildRoleMaps', () => {
   it('should build member map from roles', () => {

packages/twenty-front/src/modules/settings/roles/role-permissions/object-level-permissions/hooks/useUpsertObjectPermissionInDraftRole.ts

@@ -1,4 +1,4 @@
-import { getRoleWithUpsertedObjectPermission } from '@/settings/roles/role-permissions/object-level-permissions/hooks/getRoleWithUpsertedObjectPermission';
+import { getRoleWithUpsertedObjectPermission } from '@/settings/roles/role-permissions/object-level-permissions/utils/getRoleWithUpsertedObjectPermission';
 import { settingsDraftRoleFamilyState } from '@/settings/roles/states/settingsDraftRoleFamilyState';
 import { useSetAtomFamilyState } from '@/ui/utilities/state/jotai/hooks/useSetAtomFamilyState';
 import { type ObjectPermission } from '~/generated-metadata/graphql';

packages/twenty-front/src/modules/settings/roles/role/hooks/useSaveDraftRoleToDB.ts

@@ -4,7 +4,7 @@ import { useUpdateAgentRole } from '@/settings/roles/hooks/useUpdateAgentRole';
 import { useUpdateApiKeyRole } from '@/settings/roles/hooks/useUpdateApiKeyRole';
 import { useUpdateWorkspaceMemberRole } from '@/settings/roles/hooks/useUpdateWorkspaceMemberRole';
 import { useRemoveFieldPermissionInDraftRole } from '@/settings/roles/role-permissions/object-level-permissions/field-permissions/hooks/useRemoveFieldPermissionInDraftRole';
-import { newFieldPermissionsFilter } from '@/settings/roles/role/hooks/utils/newFieldPermissionsFilter.util';
+import { newFieldPermissionsFilter } from '@/settings/roles/role/utils/newFieldPermissionsFilter';
 import { settingsDraftRoleFamilyState } from '@/settings/roles/states/settingsDraftRoleFamilyState';
 import { settingsPersistedRoleFamilyState } from '@/settings/roles/states/settingsPersistedRoleFamilyState';
 import { useAtomFamilyStateValue } from '@/ui/utilities/state/jotai/hooks/useAtomFamilyStateValue';