Fix app:dev CLI by removing deleted createOneApplication mutation (#18460)

## Summary
- The `createOneApplication` GraphQL mutation was removed from the
server during the application architecture refactor (#18432), but the
SDK CLI (`app:dev`, `app:build --sync`) still called it, causing
failures.
- Simplified the SDK to use `syncApplication` (which now internally
creates the `ApplicationEntity` via `ensureApplicationExists`) instead
of a separate create step.
- On first run (clean install), the orchestrator now runs an initial
sync before initializing the file uploader, so file uploads can proceed
(they require the `ApplicationEntity` to exist).

## Test plan
- [x] Typecheck passes for both `twenty-sdk` and `twenty-server`
- [x] `app:dev` tested locally with existing app (finds app, uploads,
syncs)
- [x] `app:dev` tested locally after `app:uninstall` (creates app via
sync, uploads, syncs)
- [x] SDK unit tests pass (23/26 files, 3 pre-existing failures
unrelated)

Made with [Cursor](https://cursor.com)

packages/twenty-sdk/src/cli/__tests__/apps/function-execute-app/__e2e__/function-execute.e2e-spec.ts

@@ -1,7 +1,7 @@
 import { resolve } from 'path';
 import { vi } from 'vitest';
 
-import { appBuild } from '@/cli/public-operations/app-build';
+import { appGenerateClient } from '@/cli/public-operations/app-generate-client';
 import { appUninstall } from '@/cli/public-operations/app-uninstall';
 import { functionExecute } from '@/cli/public-operations/function-execute';
 import { ADD_NUMBERS_UNIVERSAL_IDENTIFIER } from '../src/logic-functions/add-numbers.function';
@@ -10,15 +10,15 @@ const APP_PATH = resolve(__dirname, '../');
 
 describe('functionExecute E2E', () => {
   beforeAll(async () => {
-    const buildResult = await appBuild({ appPath: APP_PATH });
+    const generateResult = await appGenerateClient({ appPath: APP_PATH });
 
-    if (!buildResult.success) {
+    if (!generateResult.success) {
       throw new Error(
-        `appBuild failed: ${buildResult.error.code} – ${buildResult.error.message}`,
+        `appGenerateClient failed: ${generateResult.error.code} – ${generateResult.error.message}`,
       );
     }
 
-    // Although appBuild uploads files before syncing the manifest, the server
+    // Although appGenerateClient uploads files before syncing the manifest, the server
     // may need a moment to make them readable by the execution engine.
     // Retry a dummy execution until the handler file becomes available.
     await vi.waitFor(

packages/twenty-sdk/src/cli/__tests__/apps/rich-app/__integration__/app-dev/tests/entities.tests.ts

@@ -7,10 +7,13 @@ export const defineEntitiesTests = (appPath: string): void => {
   describe('logicFunctions', () => {
     it('should have built logicFunctions preserving source path structure', async () => {
       const files = await readdir(outputDir, { recursive: true });
-      const sortedFiles = files.map((f) => f.toString()).sort();
+      // api-client is generated post-sync and depends on server schema availability
+      const sortedFiles = files
+        .map((f) => f.toString())
+        .filter((f) => !f.startsWith('api-client'))
+        .sort();
 
       expect(sortedFiles).toEqual([
-        'api-client',
         'manifest.json',
         'package.json',
         'public',

packages/twenty-sdk/src/cli/__tests__/integration/utils/run-app-dev-in-process.util.ts

@@ -19,7 +19,7 @@ export const runAppDevInProcess = async (options: {
 
   const command = new AppDevCommand();
 
-  await command.execute({ appPath });
+  await command.execute({ appPath, headless: true });
 
   const startTime = Date.now();
 

packages/twenty-sdk/src/cli/__tests__/integration/utils/setup-app-dev-mocks.ts

@@ -2,10 +2,6 @@ import { vi } from 'vitest';
 
 const mockApiService = {
   validateAuth: vi.fn().mockResolvedValue({ authValid: true, serverUp: true }),
-  findOneApplication: vi.fn().mockResolvedValue({ success: true, data: null }),
-  createApplication: vi
-    .fn()
-    .mockResolvedValue({ success: true, data: { id: 'mock-id' } }),
   generateApplicationToken: vi.fn().mockResolvedValue({
     success: true,
     data: {
@@ -39,6 +35,10 @@ const mockApiService = {
       clientSecret: 'mock-client-secret',
     },
   }),
+  createDevelopmentApplication: vi.fn().mockResolvedValue({
+    success: true,
+    data: { id: 'mock-app-id', universalIdentifier: 'mock-uid' },
+  }),
   syncApplication: vi.fn().mockResolvedValue({ success: true, data: true }),
   uploadFile: vi.fn().mockResolvedValue({ success: true, data: true }),
 };
@@ -46,14 +46,13 @@ const mockApiService = {
 vi.mock('@/cli/utilities/api/api-service', () => ({
   ApiService: class {
     validateAuth = mockApiService.validateAuth;
-    findOneApplication = mockApiService.findOneApplication;
-    createApplication = mockApiService.createApplication;
     generateApplicationToken = mockApiService.generateApplicationToken;
     renewApplicationToken = mockApiService.renewApplicationToken;
     findApplicationRegistrationByUniversalIdentifier =
       mockApiService.findApplicationRegistrationByUniversalIdentifier;
     createApplicationRegistration =
       mockApiService.createApplicationRegistration;
+    createDevelopmentApplication = mockApiService.createDevelopmentApplication;
     syncApplication = mockApiService.syncApplication;
     uploadFile = mockApiService.uploadFile;
   },