## Summary
- Converts applicationVariable from a bespoke sync path to a proper
SyncableEntity,
unifying it with the workspace migration pipeline used by all other
manifest-managed
entities (agent, skill, frontComponent, webhook, etc.)
- Removes the upsertManyApplicationVariableEntities method and its
direct-DB-mutation
approach in favor of the standard validate → build → run action handler
pipeline
- Adds universalIdentifier, deletedAt columns and makes applicationId
NOT NULL via an
instance command migration
## Motivation
Before this change, applicationVariable was the only manifest-managed
entity that bypassed
ApplicationManifestMigrationService.syncMetadataFromManifest(). It used
a bespoke service
method called directly from syncApplication(), creating two mental
models, two validation
styles, and two cache invalidation patterns. Now there's one unified
pipeline for all
manifest entities.
## What changed
### Entity refactor:
- ApplicationVariableEntity now extends SyncableEntity (gains
universalIdentifier,
non-nullable applicationId with CASCADE, soft-delete via deletedAt)
### New flat entity layer (flat-application-variable/):
- Type, maps type, editable properties constant, entity-to-flat
converter, cache service,
module
### New migration pipeline wiring:
- Manifest converter
(fromApplicationVariableManifestToUniversalFlatApplicationVariable)
- Validator service (FlatApplicationVariableValidatorService)
- Builder service
(WorkspaceMigrationApplicationVariableActionsBuilderService)
- Create/Update/Delete action handlers with secret encryption hooks
- Registered in orchestrator, builder module, runner module, and all
type registries
### Removed bespoke path:
- Deleted upsertManyApplicationVariableEntities from
ApplicationVariableEntityService
- Removed its call from ApplicationSyncService.syncApplication()
- Kept update() (operator-set value at runtime) and getDisplayValue()
(runtime display)
### Database migration:
- Instance command to add columns, backfill universalIdentifier, enforce
NOT NULL
constraints, and update indexes
## Test plan
- npx nx typecheck twenty-server passes (0 errors)
- Unit tests pass (application-variable.service.spec.ts,
build-env-var.spec.ts)
- Install an app with applicationVariables in its manifest → variables
appear with correct
universalIdentifier
- Update app manifest (add/remove/modify a variable) → migration
pipeline handles diff
correctly
- Operator-set value via update endpoint persists correctly with
encryption
- Uninstall app → variables cascade-deleted
- app dev --once on example app syncs without errors
