Unify application version gate, registration writes and upgrade paths across sources (#22931)

Continues the source-unification arc after #22921. Three related
consolidations, one commit each.

## 1. Single semver version gate (`793f4849`)

The "incoming version must move forward" rule was hand-rolled twice:
workspace installs (validate semver, reject equal as
`APP_ALREADY_INSTALLED`, lower as `CANNOT_DOWNGRADE_APPLICATION`) and
tarball deploys (reject `lte` as `VERSION_ALREADY_EXISTS`).
`ApplicationVersionValidationService.validateVersionProgression` now
owns the comparison rules and messages; new maps in
`version-reason-to-exception-code.constant.ts` translate failure reasons
to each caller's existing exception codes, so error contracts observed
by the frontend/CLI are unchanged. A non-semver current version never
blocks, matching both previous behaviors.

## 2. One registration-metadata writer (`13eb5f91`)

Tarball upload and marketplace catalog sync wrote registration metadata
with their own repository calls, duplicating the gallery-image fileId
preservation and variable-schema sync, and bypassing the
per-registration lock and transaction that `updateFromManifest`
provides. Both now delegate to `updateFromManifest` (new
`additionalFields` allowlist for their extra columns: `tarballFileId`,
`isListed`, `isVetted`, `ownerWorkspaceId`, `sourcePackage`, `name`), so
every manifest-bearing registration write serializes on the same lock
and applies the same rules. The shared gallery fileId preservation moved
to a `buildRegistrationManifestUpdateFields` util. Tarball uploads can
no longer race installs on the registration row.

Behavior notes: a tarball re-upload whose manifest lacks
`application.displayName` now keeps the existing registration name
instead of resetting it to "Unknown App", and a re-upload without a
`package.json` version keeps the stored `latestAvailableVersion` instead
of nulling it — both strictly less destructive.

## 3. TARBALL upgrades (`b20aaba9`)

`upgradeApplication` only supported NPM; TARBALL apps had no update path
for installing workspaces. It now accepts TARBALL registrations and
re-installs the stored tarball, whose contents define the target version
— the install flow already gates same-version and downgrade installs.
The settings UI shows the latest-version row and the Upgrade button for
both NPM and TARBALL apps via a shared
`isUpgradableApplicationSourceType` util. LOCAL (dev-sync updates) and
OAUTH_ONLY (no code artifacts) stay rejected with a clearer message.

## Validation

- New tests: `validateVersionProgression` matrix in
`application-version-validation.service.spec.ts`,
`buildRegistrationManifestUpdateFields` gallery-preservation spec
- All 27 application suites (148 tests) pass; typecheck and lint green
on twenty-server and twenty-front

packages/twenty-front/src/pages/settings/applications/SettingsApplicationDetails.tsx

@@ -33,13 +33,13 @@ import {
   IconSettings,
 } from 'twenty-ui/icon';
 import {
-  ApplicationRegistrationSourceType,
   FindMarketplaceAppDetailDocument,
   FindMarketplaceAppManifestDocument,
   FindOneApplicationDocument,
   PermissionFlagType,
   UninstallApplicationDocument,
 } from '~/generated-metadata/graphql';
+import { isUpgradableApplicationSourceType } from '~/pages/settings/applications/utils/isUpgradableApplicationSourceType';
 import { useNavigateSettings } from '~/hooks/useNavigateSettings';
 import { SettingsSectionSkeletonLoader } from '@/settings/components/SettingsSectionSkeletonLoader';
 import { CUSTOM_APPLICATION_ILLUSTRATIONS } from '~/pages/settings/applications/constants/CustomApplicationIllustrations';
@@ -115,7 +115,6 @@ export const SettingsApplicationDetails = () => {
   );
 
   const sourceType = application?.applicationRegistration?.sourceType;
-  const isNpmApp = sourceType === ApplicationRegistrationSourceType.NPM;
   const registrationId = detail?.id ?? application?.applicationRegistration?.id;
   const currentVersion = application?.version;
   const latestAvailableVersion =
@@ -123,7 +122,7 @@ export const SettingsApplicationDetails = () => {
     application?.applicationRegistration?.latestAvailableVersion;
 
   const hasUpdate =
-    isNpmApp &&
+    isUpgradableApplicationSourceType(sourceType) &&
     isDefined(latestAvailableVersion) &&
     isDefined(currentVersion) &&
     isNewerSemver(latestAvailableVersion, currentVersion);

packages/twenty-front/src/pages/settings/applications/SettingsAvailableApplicationDetails.tsx

@@ -41,6 +41,7 @@ import { SettingsApplicationDetailAboutTab } from '~/pages/settings/applications
 import { SettingsApplicationDetailContentTab } from '~/pages/settings/applications/tabs/SettingsApplicationDetailContentTab';
 import { SettingsApplicationPermissionsTab } from '~/pages/settings/applications/tabs/SettingsApplicationPermissionsTab';
 import { isNewerSemver } from '~/pages/settings/applications/utils/isNewerSemver';
+import { isUpgradableApplicationSourceType } from '~/pages/settings/applications/utils/isUpgradableApplicationSourceType';
 
 const AVAILABLE_APPLICATION_DETAIL_ID = 'available-application-detail';
 
@@ -103,7 +104,7 @@ export const SettingsAvailableApplicationDetails = () => {
   const defaultRole = getMarketplaceAppDefaultRoleManifest(detail);
 
   const hasUpdate =
-    isNpmApp &&
+    isUpgradableApplicationSourceType(sourceType) &&
     isDefined(latestAvailableVersion) &&
     isDefined(currentVersion) &&
     isNewerSemver(latestAvailableVersion, currentVersion);

packages/twenty-front/src/pages/settings/applications/components/SettingsApplicationVersionContainer.tsx

@@ -7,11 +7,9 @@ import { t } from '@lingui/core/macro';
 import { isDefined } from 'twenty-shared/utils';
 import { IconCircleDot, IconStatusChange, IconUpload } from 'twenty-ui/icon';
 import { Button } from 'twenty-ui/input';
-import {
-  ApplicationRegistrationSourceType,
-  type Application,
-} from '~/generated-metadata/graphql';
+import { type Application } from '~/generated-metadata/graphql';
 import { isNewerSemver } from '~/pages/settings/applications/utils/isNewerSemver';
+import { isUpgradableApplicationSourceType } from '~/pages/settings/applications/utils/isUpgradableApplicationSourceType';
 
 const StyledContainer = styled.div`
   display: flex;
@@ -37,14 +35,14 @@ export const SettingsApplicationVersionContainer = ({
   const currentVersion = application?.version;
 
   const sourceType = application?.applicationRegistration?.sourceType;
-  const isNpmApp = sourceType === ApplicationRegistrationSourceType.NPM;
+  const isUpgradableApp = isUpgradableApplicationSourceType(sourceType);
 
-  const latestVersion = isNpmApp
+  const latestVersion = isUpgradableApp
     ? (latestAvailableVersion ?? currentVersion)
     : currentVersion;
 
   const hasUpdate =
-    isNpmApp &&
+    isUpgradableApp &&
     isDefined(latestAvailableVersion) &&
     isDefined(currentVersion) &&
     isNewerSemver(latestAvailableVersion, currentVersion);
@@ -74,7 +72,7 @@ export const SettingsApplicationVersionContainer = ({
         />
       ),
     },
-    ...(isNpmApp
+    ...(isUpgradableApp
       ? [
           {
             Icon: IconStatusChange,

packages/twenty-front/src/pages/settings/applications/utils/isUpgradableApplicationSourceType.ts

@@ -0,0 +1,7 @@
+import { ApplicationRegistrationSourceType } from '~/generated-metadata/graphql';
+
+export const isUpgradableApplicationSourceType = (
+  sourceType: ApplicationRegistrationSourceType | null | undefined,
+): boolean =>
+  sourceType === ApplicationRegistrationSourceType.NPM ||
+  sourceType === ApplicationRegistrationSourceType.TARBALL;

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

@@ -4,7 +4,6 @@ import { InjectRepository } from '@nestjs/typeorm';
 import { promises as fs } from 'fs';
 import { isAbsolute, relative, resolve } from 'path';
 
-import semver from 'semver';
 import { Manifest } from 'twenty-shared/application';
 import { FileFolder } from 'twenty-shared/types';
 import { isDefined } from 'twenty-shared/utils';
@@ -24,7 +23,10 @@ import {
   ApplicationPackageFetcherService,
 } from 'src/engine/core-modules/application/application-package/application-package-fetcher.service';
 import { ApplicationVersionValidationService } from 'src/engine/core-modules/application/application-package/application-version-validation.service';
-import { VERSION_REASON_TO_APPLICATION_EXCEPTION_CODE } from 'src/engine/core-modules/application/application-package/constants/version-reason-to-exception-code.constant';
+import {
+  VERSION_PROGRESSION_REASON_TO_INSTALL_EXCEPTION_CODE,
+  VERSION_REASON_TO_APPLICATION_EXCEPTION_CODE,
+} from 'src/engine/core-modules/application/application-package/constants/version-reason-to-exception-code.constant';
 import { ApplicationManifestApplyService } from 'src/engine/core-modules/application/application-manifest/application-manifest-apply.service';
 import { ApplicationSyncService } from 'src/engine/core-modules/application/application-manifest/application-sync.service';
 import { CacheLockService } from 'src/engine/core-modules/cache-lock/cache-lock.service';
@@ -113,9 +115,37 @@ export class ApplicationInstallService {
   }
 
   private async doInstallApplication(
-    appRegistration: ApplicationRegistrationEntity,
+    preLockAppRegistration: ApplicationRegistrationEntity,
     params: { version?: string; workspaceId: string },
   ): Promise<boolean> {
+    // Re-read inside the lock so the authorization below cannot act on stale
+    // listing or ownership state.
+    const appRegistration = await this.appRegistrationRepository.findOne({
+      where: { id: preLockAppRegistration.id },
+    });
+
+    if (!appRegistration) {
+      throw new ApplicationException(
+        `Application registration with id ${preLockAppRegistration.id} not found`,
+        ApplicationExceptionCode.APPLICATION_NOT_FOUND,
+      );
+    }
+
+    // Tarball registrations that are neither listed nor pre-installed are
+    // only installable by their owner workspace.
+    if (
+      appRegistration.sourceType ===
+        ApplicationRegistrationSourceType.TARBALL &&
+      !appRegistration.isListed &&
+      !appRegistration.isPreInstalled &&
+      appRegistration.ownerWorkspaceId !== params.workspaceId
+    ) {
+      throw new ApplicationException(
+        `Application registration ${appRegistration.universalIdentifier} is not available for this workspace`,
+        ApplicationExceptionCode.FORBIDDEN,
+      );
+    }
+
     const resolvedPackage =
       await this.applicationPackageFetcherService.resolvePackage(
         appRegistration,
@@ -265,28 +295,22 @@ export class ApplicationInstallService {
         isDefined(application.version) &&
         isDefined(incomingVersion)
       ) {
-        if (!isDefined(semver.valid(incomingVersion))) {
+        const progression =
+          this.applicationVersionValidationService.validateVersionProgression({
+            incomingVersion,
+            currentVersion: application.version,
+            universalIdentifier,
+            action: 'install',
+          });
+
+        if (!progression.allowed) {
           throw new ApplicationException(
-            `Invalid version "${incomingVersion}" in package.json. Must be a valid semver version.`,
-            ApplicationExceptionCode.INVALID_INPUT,
+            progression.message,
+            VERSION_PROGRESSION_REASON_TO_INSTALL_EXCEPTION_CODE[
+              progression.reason
+            ],
           );
         }
-
-        if (isDefined(semver.valid(application.version))) {
-          if (semver.eq(incomingVersion, application.version)) {
-            throw new ApplicationException(
-              `${universalIdentifier}@${incomingVersion} is already installed in this workspace.`,
-              ApplicationExceptionCode.APP_ALREADY_INSTALLED,
-            );
-          }
-
-          if (semver.lt(incomingVersion, application.version)) {
-            throw new ApplicationException(
-              `Cannot install ${universalIdentifier}@${incomingVersion}: version ${application.version} is already installed and downgrading is not allowed.`,
-              ApplicationExceptionCode.CANNOT_DOWNGRADE_APPLICATION,
-            );
-          }
-        }
       }
 
       await this.writeFilesToStorage(

packages/twenty-server/src/engine/core-modules/application/application-package/application-version-validation.service.spec.ts

@@ -148,4 +148,93 @@ describe('ApplicationVersionValidationService', () => {
       expect(getInferredVersion).not.toHaveBeenCalled();
     });
   });
+
+  describe('validateVersionProgression', () => {
+    it('should reject an invalid incoming version', () => {
+      const result = service.validateVersionProgression({
+        incomingVersion: 'not-semver',
+        currentVersion: '1.0.0',
+        universalIdentifier: 'my-app',
+        action: 'install',
+      });
+
+      expect(result).toMatchObject({
+        allowed: false,
+        reason: 'INVALID_INCOMING_VERSION',
+      });
+    });
+
+    it('should allow any progression when the current version is not valid semver', () => {
+      expect(
+        service.validateVersionProgression({
+          incomingVersion: '1.0.0',
+          currentVersion: 'unknown',
+          universalIdentifier: 'my-app',
+          action: 'install',
+        }),
+      ).toEqual({ allowed: true });
+    });
+
+    it('should allow a higher version', () => {
+      for (const action of ['install', 'deploy'] as const) {
+        expect(
+          service.validateVersionProgression({
+            incomingVersion: '1.1.0',
+            currentVersion: '1.0.0',
+            universalIdentifier: 'my-app',
+            action,
+          }),
+        ).toEqual({ allowed: true });
+      }
+    });
+
+    it('should reject the same version on install as already installed', () => {
+      const result = service.validateVersionProgression({
+        incomingVersion: '1.0.0',
+        currentVersion: '1.0.0',
+        universalIdentifier: 'my-app',
+        action: 'install',
+      });
+
+      expect(result).toMatchObject({
+        allowed: false,
+        reason: 'SAME_VERSION',
+        message: 'my-app@1.0.0 is already installed in this workspace.',
+      });
+    });
+
+    it('should reject a lower version on install as a downgrade', () => {
+      const result = service.validateVersionProgression({
+        incomingVersion: '0.9.0',
+        currentVersion: '1.0.0',
+        universalIdentifier: 'my-app',
+        action: 'install',
+      });
+
+      expect(result).toMatchObject({
+        allowed: false,
+        reason: 'DOWNGRADE',
+      });
+    });
+
+    it('should reject same and lower versions on deploy with the bump message', () => {
+      for (const [incomingVersion, reason] of [
+        ['1.0.0', 'SAME_VERSION'],
+        ['0.9.0', 'DOWNGRADE'],
+      ] as const) {
+        const result = service.validateVersionProgression({
+          incomingVersion,
+          currentVersion: '1.0.0',
+          universalIdentifier: 'my-app',
+          action: 'deploy',
+        });
+
+        expect(result).toMatchObject({
+          allowed: false,
+          reason,
+          message: `Cannot deploy my-app@${incomingVersion}: version must be higher than the currently deployed version 1.0.0. Please bump the version in package.json.`,
+        });
+      }
+    });
+  });
 });

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

@@ -20,6 +20,19 @@ export type VersionValidationResult =
       message: string;
     };
 
+export type VersionProgressionFailureReason =
+  | 'INVALID_INCOMING_VERSION'
+  | 'SAME_VERSION'
+  | 'DOWNGRADE';
+
+export type VersionProgressionResult =
+  | { allowed: true }
+  | {
+      allowed: false;
+      reason: VersionProgressionFailureReason;
+      message: string;
+    };
+
 @Injectable()
 export class ApplicationVersionValidationService {
   constructor(
@@ -89,6 +102,60 @@ export class ApplicationVersionValidationService {
     });
   }
 
+  // A current version that is not valid semver never blocks: there is
+  // nothing reliable to compare against.
+  validateVersionProgression({
+    incomingVersion,
+    currentVersion,
+    universalIdentifier,
+    action,
+  }: {
+    incomingVersion: string;
+    currentVersion: string;
+    universalIdentifier: string;
+    action: 'install' | 'deploy';
+  }): VersionProgressionResult {
+    if (!isDefined(semver.valid(incomingVersion))) {
+      return {
+        allowed: false,
+        reason: 'INVALID_INCOMING_VERSION',
+        message: `Invalid version "${incomingVersion}" in package.json. Must be a valid semver version.`,
+      };
+    }
+
+    if (!isDefined(semver.valid(currentVersion))) {
+      return { allowed: true };
+    }
+
+    if (action === 'deploy' && semver.lte(incomingVersion, currentVersion)) {
+      return {
+        allowed: false,
+        reason: semver.eq(incomingVersion, currentVersion)
+          ? 'SAME_VERSION'
+          : 'DOWNGRADE',
+        message: `Cannot deploy ${universalIdentifier}@${incomingVersion}: version must be higher than the currently deployed version ${currentVersion}. Please bump the version in package.json.`,
+      };
+    }
+
+    if (action === 'install' && semver.eq(incomingVersion, currentVersion)) {
+      return {
+        allowed: false,
+        reason: 'SAME_VERSION',
+        message: `${universalIdentifier}@${incomingVersion} is already installed in this workspace.`,
+      };
+    }
+
+    if (action === 'install' && semver.lt(incomingVersion, currentVersion)) {
+      return {
+        allowed: false,
+        reason: 'DOWNGRADE',
+        message: `Cannot install ${universalIdentifier}@${incomingVersion}: version ${currentVersion} is already installed and downgrading is not allowed.`,
+      };
+    }
+
+    return { allowed: true };
+  }
+
   private validateVersionAgainstRange({
     version,
     requiredVersionRange,

packages/twenty-server/src/engine/core-modules/application/application-package/constants/version-reason-to-exception-code.constant.ts

@@ -1,4 +1,7 @@
-import { type VersionValidationFailureReason } from 'src/engine/core-modules/application/application-package/application-version-validation.service';
+import {
+  type VersionProgressionFailureReason,
+  type VersionValidationFailureReason,
+} from 'src/engine/core-modules/application/application-package/application-version-validation.service';
 import { ApplicationRegistrationExceptionCode } from 'src/engine/core-modules/application/application-registration/application-registration.exception';
 import { ApplicationExceptionCode } from 'src/engine/core-modules/application/application.exception';
 
@@ -32,3 +35,21 @@ export const VERSION_REASON_TO_APPLICATION_REGISTRATION_EXCEPTION_CODE: Record<
   WORKSPACE_INCOMPATIBLE:
     ApplicationRegistrationExceptionCode.SERVER_VERSION_INCOMPATIBLE,
 };
+
+export const VERSION_PROGRESSION_REASON_TO_INSTALL_EXCEPTION_CODE: Record<
+  VersionProgressionFailureReason,
+  ApplicationExceptionCode
+> = {
+  INVALID_INCOMING_VERSION: ApplicationExceptionCode.INVALID_INPUT,
+  SAME_VERSION: ApplicationExceptionCode.APP_ALREADY_INSTALLED,
+  DOWNGRADE: ApplicationExceptionCode.CANNOT_DOWNGRADE_APPLICATION,
+};
+
+export const VERSION_PROGRESSION_REASON_TO_DEPLOY_EXCEPTION_CODE: Record<
+  VersionProgressionFailureReason,
+  ApplicationRegistrationExceptionCode
+> = {
+  INVALID_INCOMING_VERSION: ApplicationRegistrationExceptionCode.INVALID_INPUT,
+  SAME_VERSION: ApplicationRegistrationExceptionCode.VERSION_ALREADY_EXISTS,
+  DOWNGRADE: ApplicationRegistrationExceptionCode.VERSION_ALREADY_EXISTS,
+};

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

@@ -7,6 +7,7 @@ import * as bcrypt from 'bcrypt';
 import { type Manifest } from 'twenty-shared/application';
 import { isDefined } from 'twenty-shared/utils';
 import { ILike, IsNull, type FindOptionsWhere, type Repository } from 'typeorm';
+import { type QueryDeepPartialEntity } from 'typeorm/query-builder/QueryPartialEntity';
 import { v4 } from 'uuid';
 
 import { CoreEntityCacheService } from 'src/engine/core-entity-cache/services/core-entity-cache.service';
@@ -31,6 +32,7 @@ import {
   type UpdateApplicationRegistrationPayload,
 } from 'src/engine/core-modules/application/application-registration/dtos/update-application-registration.input';
 import { ApplicationRegistrationSourceType } from 'src/engine/core-modules/application/application-registration/enums/application-registration-source-type.enum';
+import { buildRegistrationManifestUpdateFields } from 'src/engine/core-modules/application/application-registration/utils/build-registration-manifest-update-fields.util';
 import { fromManifestApplicationToDisplayFields } from 'src/engine/core-modules/application/application-registration/utils/from-manifest-application-to-display-fields.util';
 import { ApplicationEntity } from 'src/engine/core-modules/application/application.entity';
 import { validateRedirectUri } from 'src/engine/core-modules/auth/utils/validate-redirect-uri.util';
@@ -45,8 +47,6 @@ const BCRYPT_SALT_ROUNDS = 10;
 
 const MAX_APPLICATION_REGISTRATIONS_PAGE_SIZE = 100;
 
-// Sized well above the manifest save + variable schema sync duration so the
-// lease cannot expire mid-update and let a concurrent refresh interleave.
 const APPLICATION_REGISTRATION_UPDATE_LOCK_OPTIONS = {
   ttl: 60_000,
   ms: 500,
@@ -432,12 +432,25 @@ export class ApplicationRegistrationService {
     sourceType,
     latestAvailableVersion,
     preventVersionDowngrade = false,
+    additionalFields,
   }: {
     applicationRegistrationId: string;
     manifest: Manifest;
     sourceType?: ApplicationRegistrationSourceType;
-    latestAvailableVersion?: string;
+    // null clears the stored version; undefined leaves it untouched.
+    latestAvailableVersion?: string | null;
     preventVersionDowngrade?: boolean;
+    additionalFields?: Partial<
+      Pick<
+        ApplicationRegistrationEntity,
+        | 'name'
+        | 'sourcePackage'
+        | 'tarballFileId'
+        | 'isListed'
+        | 'isVetted'
+        | 'ownerWorkspaceId'
+      >
+    >;
   }): Promise<boolean> {
     return this.cacheLockService.withLock(
       async () => {
@@ -461,43 +474,35 @@ export class ApplicationRegistrationService {
           return false;
         }
 
-        const displayFields = fromManifestApplicationToDisplayFields(
-          manifest.application,
-        );
+        const manifestUpdateFields = buildRegistrationManifestUpdateFields({
+          manifestApplication: manifest.application,
+          existingGalleryImages: existing.galleryImages,
+        });
 
-        // Gallery image files are stored by the source-specific flows (tarball
-        // upload, dev sync); keep their fileIds for paths that did not change.
-        const existingFileIdByPath = new Map(
-          (existing.galleryImages ?? []).map(({ path, fileId }) => [
-            path,
-            fileId,
-          ]),
-        );
+        // The stored logo file belongs to the previous logo path.
+        const hasLogoPathChanged =
+          (manifestUpdateFields.logo ?? null) !== (existing.logo ?? null);
 
-        // One transaction so the registration row and its variable schemas
-        // always come from the same manifest, even when the sync fails midway.
+        // Partial update in one transaction: the row and its variable schemas
+        // stay on the same manifest without clobbering columns written by
+        // flows outside this lock.
         await this.applicationRegistrationRepository.manager.transaction(
           async (entityManager) => {
             await entityManager
               .getRepository(ApplicationRegistrationEntity)
-              .save({
-                ...existing,
-                name: manifest.application.displayName,
+              .update(applicationRegistrationId, {
+                name: manifest.application?.displayName ?? existing.name,
                 manifest,
-                ...displayFields,
-                galleryImages: displayFields.galleryImages.map(
-                  (galleryImage) => ({
-                    ...galleryImage,
-                    fileId: existingFileIdByPath.get(galleryImage.path) ?? null,
-                  }),
-                ),
+                ...manifestUpdateFields,
+                ...(hasLogoPathChanged && { logoFileId: null }),
                 ...(sourceType !== undefined && { sourceType }),
                 ...(latestAvailableVersion !== undefined && {
                   latestAvailableVersion,
                 }),
-              });
+                ...additionalFields,
+              } as QueryDeepPartialEntity<ApplicationRegistrationEntity>);
 
-            if (isDefined(manifest.application.serverVariables)) {
+            if (isDefined(manifest.application?.serverVariables)) {
               await this.applicationRegistrationVariableService.syncVariableSchemas(
                 applicationRegistrationId,
                 manifest.application.serverVariables,
@@ -587,18 +592,38 @@ export class ApplicationRegistrationService {
 
     const isVetted = vettedIdentifiers.has(params.universalIdentifier);
 
+    if (isDefined(existing) && isDefined(params.manifest)) {
+      const isNewVersion = await this.setLatestAvailableVersionIfChanged(
+        existing.id,
+        params.latestAvailableVersion ?? null,
+      );
+
+      await this.updateFromManifest({
+        applicationRegistrationId: existing.id,
+        manifest: params.manifest,
+        sourceType: params.sourceType,
+        latestAvailableVersion: params.latestAvailableVersion,
+        additionalFields: {
+          name: params.name,
+          sourcePackage: params.sourcePackage,
+          isVetted,
+        },
+      });
+
+      if (isNewVersion) {
+        this.emitRegistrationPublishMetric({
+          isNewRegistration: false,
+          universalIdentifier: params.universalIdentifier,
+          name: params.name,
+          sourceType: params.sourceType,
+          version: params.latestAvailableVersion,
+        });
+      }
+
+      return;
+    }
+
     if (isDefined(existing)) {
-      const displayFields = fromManifestApplicationToDisplayFields(
-        params.manifest?.application,
-      );
-
-      const existingFileIdByPath = new Map(
-        (existing.galleryImages ?? []).map(({ path, fileId }) => [
-          path,
-          fileId,
-        ]),
-      );
-
       const isNewVersion = await this.setLatestAvailableVersionIfChanged(
         existing.id,
         params.latestAvailableVersion ?? null,
@@ -612,13 +637,11 @@ export class ApplicationRegistrationService {
         latestAvailableVersion: params.latestAvailableVersion,
         isVetted,
         manifest: params.manifest,
-        ...displayFields,
-        galleryImages: displayFields.galleryImages.map((galleryImage) => ({
-          ...galleryImage,
-          fileId: existingFileIdByPath.get(galleryImage.path) ?? null,
-        })),
+        ...fromManifestApplicationToDisplayFields(params.manifest?.application),
       });
 
+      await this.invalidateMarketplaceAppsCache();
+
       if (isNewVersion) {
         this.emitRegistrationPublishMetric({
           isNewRegistration: false,
@@ -628,48 +651,42 @@ export class ApplicationRegistrationService {
           version: params.latestAvailableVersion,
         });
       }
-    } else {
-      const registration = this.applicationRegistrationRepository.create({
-        universalIdentifier: params.universalIdentifier,
-        name: params.name,
-        sourceType: params.sourceType,
-        sourcePackage: params.sourcePackage,
-        latestAvailableVersion: params.latestAvailableVersion,
-        isListed: true,
-        isVetted,
-        manifest: params.manifest,
-        ...fromManifestApplicationToDisplayFields(params.manifest?.application),
-        oAuthClientId: v4(),
-        oAuthRedirectUris: [],
-        oAuthScopes: [],
-        ownerWorkspaceId: null,
-      });
 
-      await this.applicationRegistrationRepository.save(registration);
-
-      this.emitRegistrationPublishMetric({
-        isNewRegistration: true,
-        universalIdentifier: params.universalIdentifier,
-        name: params.name,
-        sourceType: params.sourceType,
-        version: params.latestAvailableVersion,
-      });
+      return;
     }
 
+    const registration = this.applicationRegistrationRepository.create({
+      universalIdentifier: params.universalIdentifier,
+      name: params.name,
+      sourceType: params.sourceType,
+      sourcePackage: params.sourcePackage,
+      latestAvailableVersion: params.latestAvailableVersion,
+      isListed: true,
+      isVetted,
+      manifest: params.manifest,
+      ...fromManifestApplicationToDisplayFields(params.manifest?.application),
+      oAuthClientId: v4(),
+      oAuthRedirectUris: [],
+      oAuthScopes: [],
+      ownerWorkspaceId: null,
+    });
+
+    await this.applicationRegistrationRepository.save(registration);
+
+    this.emitRegistrationPublishMetric({
+      isNewRegistration: true,
+      universalIdentifier: params.universalIdentifier,
+      name: params.name,
+      sourceType: params.sourceType,
+      version: params.latestAvailableVersion,
+    });
+
     await this.invalidateMarketplaceAppsCache();
 
     if (!isDefined(params.manifest?.application?.serverVariables)) {
       return;
     }
 
-    const registration = await this.findOneByUniversalIdentifier(
-      params.universalIdentifier,
-    );
-
-    if (!isDefined(registration)) {
-      return;
-    }
-
     await this.applicationRegistrationVariableService.syncVariableSchemas(
       registration.id,
       params.manifest.application.serverVariables,

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

@@ -5,19 +5,19 @@ import { promises as fs } from 'fs';
 import { tmpdir } from 'os';
 import { isAbsolute, join, relative, resolve } from 'path';
 
-import semver from 'semver';
 import { FileFolder } from 'twenty-shared/types';
 import { isDefined } from 'twenty-shared/utils';
 import { Repository } from 'typeorm';
-import { type QueryDeepPartialEntity } from 'typeorm/query-builder/QueryPartialEntity';
 import { v4 } from 'uuid';
 
 import { ApplicationVersionValidationService } from 'src/engine/core-modules/application/application-package/application-version-validation.service';
-import { VERSION_REASON_TO_APPLICATION_REGISTRATION_EXCEPTION_CODE } from 'src/engine/core-modules/application/application-package/constants/version-reason-to-exception-code.constant';
+import {
+  VERSION_PROGRESSION_REASON_TO_DEPLOY_EXCEPTION_CODE,
+  VERSION_REASON_TO_APPLICATION_REGISTRATION_EXCEPTION_CODE,
+} from 'src/engine/core-modules/application/application-package/constants/version-reason-to-exception-code.constant';
 import { extractTarballSecurely } from 'src/engine/core-modules/application/application-package/utils/extract-tarball-securely.util';
 import { readJsonFile } from 'src/engine/core-modules/application/application-package/utils/read-json-file.util';
 import { resolvePackageContentDir } from 'src/engine/core-modules/application/application-package/utils/tarball-utils';
-import { ApplicationRegistrationVariableService } from 'src/engine/core-modules/application/application-registration-variable/application-registration-variable.service';
 import { ApplicationRegistrationAssetService } from 'src/engine/core-modules/application/application-registration/application-registration-asset.service';
 import { ApplicationRegistrationEntity } from 'src/engine/core-modules/application/application-registration/application-registration.entity';
 import {
@@ -29,7 +29,7 @@ import { ApplicationRegistrationSourceType } from 'src/engine/core-modules/appli
 import { fromManifestApplicationToDisplayFields } from 'src/engine/core-modules/application/application-registration/utils/from-manifest-application-to-display-fields.util';
 import { ApplicationService } from 'src/engine/core-modules/application/application.service';
 import { FileStorageService } from 'src/engine/core-modules/file-storage/services/file-storage.service';
-import type { ApplicationManifest } from 'twenty-shared/application';
+import type { ApplicationManifest, Manifest } from 'twenty-shared/application';
 
 @Injectable()
 export class ApplicationTarballService {
@@ -41,7 +41,6 @@ export class ApplicationTarballService {
     private readonly fileStorageService: FileStorageService,
     private readonly applicationRegistrationAssetService: ApplicationRegistrationAssetService,
     private readonly applicationService: ApplicationService,
-    private readonly applicationRegistrationVariableService: ApplicationRegistrationVariableService,
     private readonly applicationVersionValidationService: ApplicationVersionValidationService,
     private readonly applicationRegistrationService: ApplicationRegistrationService,
   ) {}
@@ -56,48 +55,8 @@ export class ApplicationTarballService {
     await fs.mkdir(tempDir, { recursive: true });
 
     try {
-      const tarballPath = join(tempDir, 'app.tar.gz');
-
-      await fs.writeFile(tarballPath, params.tarballBuffer);
-
-      const extractDir = join(tempDir, 'extracted');
-
-      await fs.mkdir(extractDir, { recursive: true });
-      await extractTarballSecurely(tarballPath, extractDir);
-
-      const contentDir = await resolvePackageContentDir(extractDir);
-
-      const manifest = await readJsonFile<{
-        application?: ApplicationManifest;
-      }>(contentDir, 'manifest.json');
-
-      const packageJson = await readJsonFile<{
-        version: string;
-        engines?: { twenty?: string };
-      }>(contentDir, 'package.json');
-
-      if (manifest === null) {
-        throw new ApplicationRegistrationException(
-          'manifest.json not found or invalid in tarball',
-          ApplicationRegistrationExceptionCode.INVALID_INPUT,
-        );
-      }
-
-      const requiredServerVersion = packageJson?.engines?.twenty;
-
-      const versionValidation =
-        await this.applicationVersionValidationService.validateServerCompatibility(
-          requiredServerVersion,
-        );
-
-      if (!versionValidation.compatible) {
-        throw new ApplicationRegistrationException(
-          versionValidation.message,
-          VERSION_REASON_TO_APPLICATION_REGISTRATION_EXCEPTION_CODE[
-            versionValidation.reason
-          ],
-        );
-      }
+      const { contentDir, manifest, packageJson } =
+        await this.extractAndValidateTarball(tempDir, params.tarballBuffer);
 
       const universalIdentifier =
         params.universalIdentifier ?? manifest.application?.universalIdentifier;
@@ -109,120 +68,57 @@ export class ApplicationTarballService {
         );
       }
 
-      let appRegistration = await this.appRegistrationRepository.findOne({
-        where: {
-          universalIdentifier,
-          ownerWorkspaceId: params.ownerWorkspaceId,
+      const existingRegistration = await this.appRegistrationRepository.findOne(
+        {
+          where: {
+            universalIdentifier,
+            ownerWorkspaceId: params.ownerWorkspaceId,
+          },
         },
+      );
+
+      const isNewRegistration = !isDefined(existingRegistration);
+      const previousLatestAvailableVersion =
+        existingRegistration?.latestAvailableVersion ?? null;
+
+      const appRegistration = isDefined(existingRegistration)
+        ? this.assertTarballCanReplaceRegistration({
+            registration: existingRegistration,
+            incomingVersion: packageJson?.version,
+            universalIdentifier,
+          })
+        : await this.createTarballRegistration({
+            universalIdentifier,
+            manifest,
+            packageJsonVersion: packageJson?.version ?? null,
+            ownerWorkspaceId: params.ownerWorkspaceId,
+          });
+
+      const savedFile = await this.storeTarballFile({
+        appRegistration,
+        tarballBuffer: params.tarballBuffer,
+        ownerWorkspaceId: params.ownerWorkspaceId,
       });
 
-      const isNewRegistration = !isDefined(appRegistration);
-      const previousLatestAvailableVersion =
-        appRegistration?.latestAvailableVersion ?? null;
-
-      if (isDefined(appRegistration)) {
-        if (
-          appRegistration.sourceType !==
-            ApplicationRegistrationSourceType.LOCAL &&
-          appRegistration.sourceType !==
-            ApplicationRegistrationSourceType.TARBALL
-        ) {
-          throw new ApplicationRegistrationException(
-            `This app is registered as ${appRegistration.sourceType}. Cannot upload tarball.`,
-            ApplicationRegistrationExceptionCode.SOURCE_CHANNEL_MISMATCH,
-          );
-        }
-
-        if (
-          appRegistration.sourceType ===
-            ApplicationRegistrationSourceType.TARBALL &&
-          isDefined(appRegistration.latestAvailableVersion) &&
-          isDefined(packageJson?.version)
-        ) {
-          const incomingVersion = packageJson.version;
-          const currentVersion = appRegistration.latestAvailableVersion;
-
-          if (!isDefined(semver.valid(incomingVersion))) {
-            throw new ApplicationRegistrationException(
-              `Invalid version "${incomingVersion}" in package.json. Must be a valid semver version.`,
-              ApplicationRegistrationExceptionCode.INVALID_INPUT,
-            );
-          }
-
-          if (
-            isDefined(semver.valid(currentVersion)) &&
-            semver.lte(incomingVersion, currentVersion)
-          ) {
-            throw new ApplicationRegistrationException(
-              `Cannot deploy ${universalIdentifier}@${incomingVersion}: version must be higher than the currently deployed version ${currentVersion}. Please bump the version in package.json.`,
-              ApplicationRegistrationExceptionCode.VERSION_ALREADY_EXISTS,
-            );
-          }
-        }
-      } else {
-        appRegistration = this.appRegistrationRepository.create({
-          universalIdentifier,
-          name: manifest.application?.displayName ?? 'Unknown App',
-          sourceType: ApplicationRegistrationSourceType.TARBALL,
-          manifest,
-          ...fromManifestApplicationToDisplayFields(manifest.application),
-          latestAvailableVersion: packageJson?.version ?? null,
+      await this.applicationRegistrationService.updateFromManifest({
+        applicationRegistrationId: appRegistration.id,
+        manifest: manifest as Manifest,
+        sourceType: ApplicationRegistrationSourceType.TARBALL,
+        latestAvailableVersion: packageJson?.version ?? null,
+        additionalFields: {
+          tarballFileId: savedFile.id,
           isListed: false,
           isVetted: false,
-          oAuthClientId: v4(),
-          oAuthRedirectUris: [],
-          oAuthScopes: [],
           ownerWorkspaceId: params.ownerWorkspaceId,
-        });
-
-        appRegistration =
-          await this.appRegistrationRepository.save(appRegistration);
-      }
-
-      const { workspaceCustomFlatApplication } =
-        await this.applicationService.findWorkspaceTwentyStandardAndCustomApplicationOrThrow(
-          { workspaceId: params.ownerWorkspaceId },
-        );
-
-      const savedFile = await this.fileStorageService.writeFile({
-        sourceFile: params.tarballBuffer,
-        resourcePath: `${appRegistration.id}/app.tar.gz`,
-        fileFolder: FileFolder.AppTarball,
-        applicationUniversalIdentifier:
-          workspaceCustomFlatApplication.universalIdentifier,
-        workspaceId: params.ownerWorkspaceId,
-        fileId: appRegistration.tarballFileId ?? v4(),
-        settings: {
-          isTemporaryFile: false,
-          toDelete: false,
         },
       });
 
-      await this.appRegistrationRepository.update(appRegistration.id, {
-        sourceType: ApplicationRegistrationSourceType.TARBALL,
-        tarballFileId: savedFile.id,
-        name: manifest.application?.displayName ?? 'Unknown App',
-        manifest,
-        ...fromManifestApplicationToDisplayFields(manifest.application),
-        latestAvailableVersion: packageJson?.version ?? null,
-        isListed: false,
-        isVetted: false,
-        ownerWorkspaceId: params.ownerWorkspaceId,
-      } as QueryDeepPartialEntity<ApplicationRegistrationEntity>);
-
       await this.applicationRegistrationAssetService.storeRegistrationAssets({
         applicationRegistrationId: appRegistration.id,
         manifestApplication: manifest.application,
         readAsset: (path) => this.readAssetFromContentDir(contentDir, path),
       });
 
-      if (manifest.application?.serverVariables) {
-        await this.applicationRegistrationVariableService.syncVariableSchemas(
-          appRegistration.id,
-          manifest.application.serverVariables,
-        );
-      }
-
       this.logger.log(
         `Tarball uploaded for app ${universalIdentifier} (registration ${appRegistration.id})`,
       );
@@ -249,6 +145,161 @@ export class ApplicationTarballService {
     }
   }
 
+  private async extractAndValidateTarball(
+    tempDir: string,
+    tarballBuffer: Buffer,
+  ): Promise<{
+    contentDir: string;
+    manifest: { application?: ApplicationManifest };
+    packageJson: { version: string; engines?: { twenty?: string } } | null;
+  }> {
+    const tarballPath = join(tempDir, 'app.tar.gz');
+
+    await fs.writeFile(tarballPath, tarballBuffer);
+
+    const extractDir = join(tempDir, 'extracted');
+
+    await fs.mkdir(extractDir, { recursive: true });
+    await extractTarballSecurely(tarballPath, extractDir);
+
+    const contentDir = await resolvePackageContentDir(extractDir);
+
+    const manifest = await readJsonFile<{
+      application?: ApplicationManifest;
+    }>(contentDir, 'manifest.json');
+
+    const packageJson = await readJsonFile<{
+      version: string;
+      engines?: { twenty?: string };
+    }>(contentDir, 'package.json');
+
+    if (manifest === null) {
+      throw new ApplicationRegistrationException(
+        'manifest.json not found or invalid in tarball',
+        ApplicationRegistrationExceptionCode.INVALID_INPUT,
+      );
+    }
+
+    const versionValidation =
+      await this.applicationVersionValidationService.validateServerCompatibility(
+        packageJson?.engines?.twenty,
+      );
+
+    if (!versionValidation.compatible) {
+      throw new ApplicationRegistrationException(
+        versionValidation.message,
+        VERSION_REASON_TO_APPLICATION_REGISTRATION_EXCEPTION_CODE[
+          versionValidation.reason
+        ],
+      );
+    }
+
+    return { contentDir, manifest, packageJson };
+  }
+
+  private assertTarballCanReplaceRegistration({
+    registration,
+    incomingVersion,
+    universalIdentifier,
+  }: {
+    registration: ApplicationRegistrationEntity;
+    incomingVersion: string | undefined;
+    universalIdentifier: string;
+  }): ApplicationRegistrationEntity {
+    if (
+      registration.sourceType !== ApplicationRegistrationSourceType.LOCAL &&
+      registration.sourceType !== ApplicationRegistrationSourceType.TARBALL
+    ) {
+      throw new ApplicationRegistrationException(
+        `This app is registered as ${registration.sourceType}. Cannot upload tarball.`,
+        ApplicationRegistrationExceptionCode.SOURCE_CHANNEL_MISMATCH,
+      );
+    }
+
+    if (
+      registration.sourceType === ApplicationRegistrationSourceType.TARBALL &&
+      isDefined(registration.latestAvailableVersion) &&
+      isDefined(incomingVersion)
+    ) {
+      const progression =
+        this.applicationVersionValidationService.validateVersionProgression({
+          incomingVersion,
+          currentVersion: registration.latestAvailableVersion,
+          universalIdentifier,
+          action: 'deploy',
+        });
+
+      if (!progression.allowed) {
+        throw new ApplicationRegistrationException(
+          progression.message,
+          VERSION_PROGRESSION_REASON_TO_DEPLOY_EXCEPTION_CODE[
+            progression.reason
+          ],
+        );
+      }
+    }
+
+    return registration;
+  }
+
+  private async createTarballRegistration({
+    universalIdentifier,
+    manifest,
+    packageJsonVersion,
+    ownerWorkspaceId,
+  }: {
+    universalIdentifier: string;
+    manifest: { application?: ApplicationManifest };
+    packageJsonVersion: string | null;
+    ownerWorkspaceId: string;
+  }): Promise<ApplicationRegistrationEntity> {
+    return this.appRegistrationRepository.save(
+      this.appRegistrationRepository.create({
+        universalIdentifier,
+        name: manifest.application?.displayName ?? 'Unknown App',
+        sourceType: ApplicationRegistrationSourceType.TARBALL,
+        manifest,
+        ...fromManifestApplicationToDisplayFields(manifest.application),
+        latestAvailableVersion: packageJsonVersion,
+        isListed: false,
+        isVetted: false,
+        oAuthClientId: v4(),
+        oAuthRedirectUris: [],
+        oAuthScopes: [],
+        ownerWorkspaceId,
+      }),
+    );
+  }
+
+  private async storeTarballFile({
+    appRegistration,
+    tarballBuffer,
+    ownerWorkspaceId,
+  }: {
+    appRegistration: ApplicationRegistrationEntity;
+    tarballBuffer: Buffer;
+    ownerWorkspaceId: string;
+  }) {
+    const { workspaceCustomFlatApplication } =
+      await this.applicationService.findWorkspaceTwentyStandardAndCustomApplicationOrThrow(
+        { workspaceId: ownerWorkspaceId },
+      );
+
+    return this.fileStorageService.writeFile({
+      sourceFile: tarballBuffer,
+      resourcePath: `${appRegistration.id}/app.tar.gz`,
+      fileFolder: FileFolder.AppTarball,
+      applicationUniversalIdentifier:
+        workspaceCustomFlatApplication.universalIdentifier,
+      workspaceId: ownerWorkspaceId,
+      fileId: appRegistration.tarballFileId ?? v4(),
+      settings: {
+        isTemporaryFile: false,
+        toDelete: false,
+      },
+    });
+  }
+
   private async readAssetFromContentDir(
     contentDir: string,
     path: string,

packages/twenty-server/src/engine/core-modules/application/application-registration/utils/__tests__/build-registration-manifest-update-fields.util.spec.ts

@@ -0,0 +1,33 @@
+import { type ApplicationManifest } from 'twenty-shared/application';
+
+import { buildRegistrationManifestUpdateFields } from 'src/engine/core-modules/application/application-registration/utils/build-registration-manifest-update-fields.util';
+
+describe('buildRegistrationManifestUpdateFields', () => {
+  it('should keep stored fileIds for gallery paths that did not change', () => {
+    const result = buildRegistrationManifestUpdateFields({
+      manifestApplication: {
+        universalIdentifier: 'my-app',
+        galleryImages: ['images/kept.png', 'images/new.png'],
+      } as unknown as ApplicationManifest,
+      existingGalleryImages: [
+        { path: 'images/kept.png', fileId: 'file-kept' },
+        { path: 'images/removed.png', fileId: 'file-removed' },
+      ],
+    });
+
+    expect(result.galleryImages).toEqual([
+      { path: 'images/kept.png', fileId: 'file-kept' },
+      { path: 'images/new.png', fileId: null },
+    ]);
+  });
+
+  it('should handle a missing manifest application and no stored images', () => {
+    const result = buildRegistrationManifestUpdateFields({
+      manifestApplication: undefined,
+      existingGalleryImages: null,
+    });
+
+    expect(result.galleryImages).toEqual([]);
+    expect(result.logo).toBeNull();
+  });
+});

packages/twenty-server/src/engine/core-modules/application/application-registration/utils/build-registration-manifest-update-fields.util.ts

@@ -0,0 +1,29 @@
+import { type ApplicationManifest } from 'twenty-shared/application';
+
+import { type ApplicationRegistrationGalleryImage } from 'src/engine/core-modules/application/application-registration/types/application-registration-gallery-image.type';
+import { fromManifestApplicationToDisplayFields } from 'src/engine/core-modules/application/application-registration/utils/from-manifest-application-to-display-fields.util';
+
+// Gallery fileIds are kept for unchanged paths so a metadata refresh cannot
+// drop already stored assets.
+export const buildRegistrationManifestUpdateFields = ({
+  manifestApplication,
+  existingGalleryImages,
+}: {
+  manifestApplication: ApplicationManifest | undefined;
+  existingGalleryImages: ApplicationRegistrationGalleryImage[] | null;
+}) => {
+  const displayFields =
+    fromManifestApplicationToDisplayFields(manifestApplication);
+
+  const existingFileIdByPath = new Map(
+    (existingGalleryImages ?? []).map(({ path, fileId }) => [path, fileId]),
+  );
+
+  return {
+    ...displayFields,
+    galleryImages: displayFields.galleryImages.map((galleryImage) => ({
+      ...galleryImage,
+      fileId: existingFileIdByPath.get(galleryImage.path) ?? null,
+    })),
+  };
+};

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

@@ -110,15 +110,15 @@ export class ApplicationUpgradeService {
       where: { id: params.appRegistrationId },
     });
 
+    // LOCAL apps are updated by dev sync and OAUTH_ONLY registrations have no
+    // code artifacts.
     if (
       appRegistration.sourceType === ApplicationRegistrationSourceType.LOCAL ||
-      appRegistration.sourceType ===
-        ApplicationRegistrationSourceType.TARBALL ||
       appRegistration.sourceType ===
         ApplicationRegistrationSourceType.OAUTH_ONLY
     ) {
       throw new ApplicationException(
-        'Cannot upgrade an app installed from a tarball, local source, or OAuth-only registration',
+        'Cannot upgrade an app installed from a local source or OAuth-only registration',
         ApplicationExceptionCode.UPGRADE_FAILED,
       );
     }

packages/twenty-server/test/integration/metadata/suites/application/__snapshots__/failing-application-version-progression.integration-spec.ts.snap

@@ -0,0 +1,37 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Application version progression gate rejects deploying a version lower than the deployed one 1`] = `
+{
+  "extensions": {
+    "code": "BAD_USER_INPUT",
+    "subCode": "VERSION_ALREADY_EXISTS",
+    "userFriendlyMessage": "This version is not higher than the currently deployed version. Please bump the version in package.json before deploying again.",
+  },
+  "message": "Cannot deploy 20202020-6b0e-4b1e-9d3a-000000002931@<version>: version must be higher than the currently deployed version <version>. Please bump the version in package.json.",
+  "name": "UserInputError",
+}
+`;
+
+exports[`Application version progression gate rejects re-deploying the currently deployed version 1`] = `
+{
+  "extensions": {
+    "code": "BAD_USER_INPUT",
+    "subCode": "VERSION_ALREADY_EXISTS",
+    "userFriendlyMessage": "This version is not higher than the currently deployed version. Please bump the version in package.json before deploying again.",
+  },
+  "message": "Cannot deploy 20202020-6b0e-4b1e-9d3a-000000002931@<version>: version must be higher than the currently deployed version <version>. Please bump the version in package.json.",
+  "name": "UserInputError",
+}
+`;
+
+exports[`Application version progression gate rejects re-installing the already installed version 1`] = `
+{
+  "extensions": {
+    "code": "BAD_USER_INPUT",
+    "subCode": "APP_ALREADY_INSTALLED",
+    "userFriendlyMessage": "This version of the application is already installed in this workspace.",
+  },
+  "message": "20202020-6b0e-4b1e-9d3a-000000002931@<version> is already installed in this workspace.",
+  "name": "UserInputError",
+}
+`;

packages/twenty-server/test/integration/metadata/suites/application/failing-application-version-progression.integration-spec.ts

@@ -0,0 +1,97 @@
+import { expectOneNotInternalServerErrorSnapshot } from 'test/integration/graphql/utils/expect-one-not-internal-server-error-snapshot.util';
+import { buildBaseManifest } from 'test/integration/metadata/suites/application/utils/build-base-manifest.util';
+import { cleanupApplicationAndAppRegistration } from 'test/integration/metadata/suites/application/utils/cleanup-application-and-app-registration.util';
+import { createAppTarball } from 'test/integration/metadata/suites/application/utils/create-app-tarball.util';
+import { installApplication } from 'test/integration/metadata/suites/application/utils/install-application.util';
+import { uploadAppTarball } from 'test/integration/metadata/suites/application/utils/upload-app-tarball.util';
+import { scrubSemverVersions } from 'test/utils/scrub-semver-versions.util';
+
+// Fixed identifiers keep the exception messages, and therefore the error
+// snapshots, stable across runs.
+const APP_UNIVERSAL_IDENTIFIER = '20202020-6b0e-4b1e-9d3a-000000002931';
+const ROLE_UNIVERSAL_IDENTIFIER = '20202020-6b0e-4b1e-9d3a-000000002932';
+
+// The upload flow runs cache-lock retries with real delays, so fake timers
+// would hang it — mirror the other application suites.
+jest.setTimeout(120000);
+
+const buildTarball = (version: string): Promise<Buffer> =>
+  createAppTarball({
+    'manifest.json': JSON.stringify(
+      buildBaseManifest({
+        appId: APP_UNIVERSAL_IDENTIFIER,
+        roleId: ROLE_UNIVERSAL_IDENTIFIER,
+      }),
+    ),
+    'package.json': JSON.stringify({
+      name: 'test-version-progression',
+      version,
+    }),
+  });
+
+describe('Application version progression gate', () => {
+  beforeAll(async () => {
+    jest.useRealTimers();
+
+    const tarball = await buildTarball('1.0.0');
+
+    await uploadAppTarball({
+      tarballBuffer: tarball,
+      universalIdentifier: APP_UNIVERSAL_IDENTIFIER,
+    });
+  });
+
+  afterAll(async () => {
+    await cleanupApplicationAndAppRegistration({
+      applicationUniversalIdentifier: APP_UNIVERSAL_IDENTIFIER,
+    });
+
+    jest.useFakeTimers();
+  });
+
+  it('rejects re-deploying the currently deployed version', async () => {
+    const tarball = await buildTarball('1.0.0');
+
+    const { errors } = await uploadAppTarball({
+      tarballBuffer: tarball,
+      universalIdentifier: APP_UNIVERSAL_IDENTIFIER,
+      expectToFail: true,
+    });
+
+    expectOneNotInternalServerErrorSnapshot({
+      errors,
+      normalizeMessage: scrubSemverVersions,
+    });
+  });
+
+  it('rejects deploying a version lower than the deployed one', async () => {
+    const tarball = await buildTarball('0.9.0');
+
+    const { errors } = await uploadAppTarball({
+      tarballBuffer: tarball,
+      universalIdentifier: APP_UNIVERSAL_IDENTIFIER,
+      expectToFail: true,
+    });
+
+    expectOneNotInternalServerErrorSnapshot({
+      errors,
+      normalizeMessage: scrubSemverVersions,
+    });
+  });
+
+  it('rejects re-installing the already installed version', async () => {
+    await installApplication({
+      input: { universalIdentifier: APP_UNIVERSAL_IDENTIFIER },
+    });
+
+    const { errors } = await installApplication({
+      input: { universalIdentifier: APP_UNIVERSAL_IDENTIFIER },
+      expectToFail: true,
+    });
+
+    expectOneNotInternalServerErrorSnapshot({
+      errors,
+      normalizeMessage: scrubSemverVersions,
+    });
+  });
+});