feat(twenty-orm): introduce WorkspaceScopedRepository for core/metadata workspace-scoped entities (#20953)

## Summary

Adds a third tenancy enforcement layer for entities that live in shared
schemas (`core`, `metadata`) and carry a `workspaceId` column —
previously the only safeguard at this layer was developer discipline
(remembering to put `workspaceId` in every WHERE clause).

### The three layers, after this PR

| Layer | Scope | How it's enforced |
|---|---|---|
| 1. Workspace data | per-workspace schema (companies, people, custom
objects) | `twentyORMManager.getRepository(workspace, E)` — physical
isolation (own data source) |
| 2. Metadata | shared `metadata` schema (objectMetadata, fieldMetadata,
views, roles…) | Flat-entity-maps cache — workspace-scoped in-memory
map, lookups by id within it |
| 3. Core (new) | shared `core` schema (agent threads/turns/messages,
app tokens, etc.) | `WorkspaceScopedRepository<T>` — `workspaceId` is a
required positional argument on every read/write |

## What's in the PR

### The wrapper
(`packages/twenty-server/src/engine/twenty-orm/workspace-scoped-repository/`)
- `WorkspaceScopedRepository<T extends WorkspaceScopedEntity>` — wraps a
TypeORM `Repository<T>`, requires `workspaceId` on every
`find`/`findOne`/`findOneOrFail`/`update`/`delete`/`softDelete`/`insert`/`save`/`count`
call, merging it into the WHERE or stamping it on the entity.
`createQueryBuilder` is an explicit escape hatch (caller scopes
manually).
- Provided via Nest DI with
`@InjectWorkspaceScopedRepository(EntityClass)` and the
`provideWorkspaceScopedRepository(EntityClass)` provider factory.
- 19 unit tests cover the merge behavior, override-on-conflict, and the
array-where (OR) case.

### Lint enforcement
(`packages/twenty-oxlint-rules/rules/prefer-workspace-scoped-repository.ts`)
- New `twenty/prefer-workspace-scoped-repository` rule (level:
**error**).
- Blacklist of entity names: raw `@InjectRepository(E)` is rejected if
`E` is on the list.
- Initial list: `AgentTurnEntity`, `AgentMessageEntity`,
`AgentMessagePartEntity`, `AgentChatThreadEntity`,
`AgentTurnEvaluationEntity`, `AgentEntity`.
- Designed to grow over time as more consumers are migrated.
- 5 rule tests.

### Migration in this PR
All consumers of the six blacklisted entities, including:
- AI agent / chat / monitor resolvers, services, and jobs
- `AgentService`, `AiAgentRoleService`, `AiAgentWorkflowAction`,
`ApplicationService`, `WorkspaceFlatAgentMapCacheService`
- Admin-panel chat (migrated where the lookup is workspace-known; one
documented `eslint-disable` on the threadId-discovery lookup that
necessarily precedes the `allowImpersonation` permission check)
- `AiAgentRoleService` unit spec updated to mock the scoped wrapper

## Future work (deliberately not in this PR)

A standalone audit identified ~14 additional `core`/`metadata` entities
with `workspaceId` that currently use raw `@InjectRepository` and could
be added to the blacklist. Notable candidates: `UserWorkspaceEntity` (42
sites), `AppTokenEntity` (10), `FileEntity` (7),
`BillingCustomerEntity`/`BillingSubscriptionEntity` (~22 combined). Each
should be its own PR — the migration is mechanical but the surface is
wide.

## Test plan
- [x] `npx nx typecheck twenty-server` — clean
- [x] `npx nx lint twenty-server` — 0 warnings, 0 errors
- [x] `npx jest workspace-scoped-repository` — 19/19 pass
- [x] `npx nx test twenty-oxlint-rules` — 215/215 pass
- [x] `npx jest src/engine/metadata-modules/ai` — 44/44 pass
- [ ] Manual smoke: end-to-end AI agent chat send/receive (reviewer)
- [ ] Manual smoke: AI agent monitor — list turns, run evaluation
(reviewer)
- [ ] Manual smoke: admin-panel chat thread inspection (reviewer)

packages/twenty-server/src/engine/core-modules/application/application-package/application-package-fetcher.service.ts

@@ -49,6 +49,8 @@ export class ApplicationPackageFetcherService implements OnModuleInit {
     private readonly twentyConfigService: TwentyConfigService,
     private readonly fileStorageService: FileStorageService,
     private readonly secureHttpClientService: SecureHttpClientService,
+    // Tarball lookup keyed by ApplicationRegistration id (catalog rows have null ownerWorkspaceId).
+    // eslint-disable-next-line twenty/prefer-workspace-scoped-repository
     @InjectRepository(FileEntity)
     private readonly fileRepository: Repository<FileEntity>,
     @InjectRepository(ApplicationEntity)

packages/twenty-server/src/engine/core-modules/application/application.module.ts

@@ -14,6 +14,7 @@ import { WorkspaceManyOrAllFlatEntityMapsCacheModule } from 'src/engine/metadata
 import { FrontComponentEntity } from 'src/engine/metadata-modules/front-component/entities/front-component.entity';
 import { LogicFunctionEntity } from 'src/engine/metadata-modules/logic-function/logic-function.entity';
 import { ObjectMetadataEntity } from 'src/engine/metadata-modules/object-metadata/object-metadata.entity';
+import { provideWorkspaceScopedRepository } from 'src/engine/twenty-orm/workspace-scoped-repository/provide-workspace-scoped-repository';
 import { WorkspaceCacheModule } from 'src/engine/workspace-cache/workspace-cache.module';
 
 @Module({
@@ -34,6 +35,10 @@ import { WorkspaceCacheModule } from 'src/engine/workspace-cache/workspace-cache
     FeatureFlagModule,
   ],
   exports: [ApplicationService, WorkspaceFlatApplicationMapCacheService],
-  providers: [ApplicationService, WorkspaceFlatApplicationMapCacheService],
+  providers: [
+    ApplicationService,
+    WorkspaceFlatApplicationMapCacheService,
+    provideWorkspaceScopedRepository(AgentEntity),
+  ],
 })
 export class ApplicationModule {}

packages/twenty-server/src/engine/core-modules/application/application.service.ts

@@ -23,6 +23,8 @@ import { FrontComponentEntity } from 'src/engine/metadata-modules/front-componen
 import { LogicFunctionEntity } from 'src/engine/metadata-modules/logic-function/logic-function.entity';
 import { logicFunctionCreateHash } from 'src/engine/metadata-modules/logic-function/utils/logic-function-create-hash.utils';
 import { ObjectMetadataEntity } from 'src/engine/metadata-modules/object-metadata/object-metadata.entity';
+import { InjectWorkspaceScopedRepository } from 'src/engine/twenty-orm/workspace-scoped-repository/inject-workspace-scoped-repository.decorator';
+import { WorkspaceScopedRepository } from 'src/engine/twenty-orm/workspace-scoped-repository/workspace-scoped-repository';
 import { WorkspaceCacheService } from 'src/engine/workspace-cache/services/workspace-cache.service';
 import { TWENTY_STANDARD_APPLICATION } from 'src/engine/workspace-manager/twenty-standard-application/constants/twenty-standard-applications';
 
@@ -37,8 +39,8 @@ export class ApplicationService {
     private readonly workspaceRepository: Repository<WorkspaceEntity>,
     @InjectRepository(LogicFunctionEntity)
     private readonly logicFunctionRepository: Repository<LogicFunctionEntity>,
-    @InjectRepository(AgentEntity)
-    private readonly agentRepository: Repository<AgentEntity>,
+    @InjectWorkspaceScopedRepository(AgentEntity)
+    private readonly agentRepository: WorkspaceScopedRepository<AgentEntity>,
     @InjectRepository(FrontComponentEntity)
     private readonly frontComponentRepository: Repository<FrontComponentEntity>,
     @InjectRepository(CommandMenuItemEntity)
@@ -198,8 +200,8 @@ export class ApplicationService {
       this.logicFunctionRepository.find({
         where: { applicationId: application.id, workspaceId },
       }),
-      this.agentRepository.find({
-        where: { applicationId: application.id, workspaceId },
+      this.agentRepository.find(workspaceId, {
+        where: { applicationId: application.id },
       }),
       this.frontComponentRepository.find({
         where: { applicationId: application.id, workspaceId },