Surface structured validation errors during application install (#19787)

## Summary
- Add `WorkspaceMigrationGraphqlApiExceptionInterceptor` to
`MarketplaceResolver` and `ApplicationInstallResolver` so validation
failures during app install return `METADATA_VALIDATION_FAILED` with
structured `extensions.errors` instead of generic
`INTERNAL_SERVER_ERROR`
- Update SDK `installTarballApp()` to pass the full GraphQL error object
(including extensions) through the install flow
- Add `formatInstallValidationErrors` utility to format structured
validation errors for CLI output
- Add integration test verifying structured error responses for invalid
navigation menu items and view fields

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

packages/twenty-sdk/src/cli/operations/dev-once.ts

@@ -13,7 +13,7 @@ import { manifestUpdateChecksums } from '@/cli/utilities/build/manifest/manifest
 import { writeManifestToOutput } from '@/cli/utilities/build/manifest/manifest-writer';
 import { ClientService } from '@/cli/utilities/client/client-service';
 import { ConfigService } from '@/cli/utilities/config/config-service';
-import { formatSyncErrorEvents } from '@/cli/utilities/dev/orchestrator/steps/format-sync-error-events';
+import { formatManifestValidationErrors } from '@/cli/utilities/error/format-manifest-validation-errors';
 import { serializeError } from '@/cli/utilities/error/serialize-error';
 import { FileUploader } from '@/cli/utilities/file/file-uploader';
 import { runSafe } from '@/cli/utilities/run-safe';
@@ -197,7 +197,7 @@ const innerAppDevOnce = async (
   if (!syncResult.success) {
     const errorEvents = verbose
       ? null
-      : formatSyncErrorEvents(syncResult.error);
+      : formatManifestValidationErrors(syncResult.error);
 
     const message = errorEvents
       ? errorEvents.map((event) => event.message).join('\n')

packages/twenty-sdk/src/cli/operations/install.ts

@@ -1,6 +1,8 @@
 import { ApiService } from '@/cli/utilities/api/api-service';
 import { readManifestFromFile } from '@/cli/utilities/build/manifest/manifest-reader';
 import { ConfigService } from '@/cli/utilities/config/config-service';
+import { formatManifestValidationErrors } from '@/cli/utilities/error/format-manifest-validation-errors';
+import { serializeError } from '@/cli/utilities/error/serialize-error';
 import { runSafe } from '@/cli/utilities/run-safe';
 import { APP_ERROR_CODES, type CommandResult } from '@/cli/types';
 
@@ -34,16 +36,17 @@ const innerAppInstall = async (
   });
 
   if (!result.success) {
-    const errorMessage =
-      result.error instanceof Error
-        ? result.error.message
-        : String(result.error ?? 'Unknown error');
+    const errorEvents = formatManifestValidationErrors(result.error);
+
+    const message = errorEvents
+      ? errorEvents.map((event) => event.message).join('\n')
+      : `Install failed with error: ${serializeError(result.error)}`;
 
     return {
       success: false,
       error: {
         code: APP_ERROR_CODES.INSTALL_FAILED,
-        message: errorMessage,
+        message,
       },
     };
   }