- Remove feature flag
- Remove legacy methods in file-upload and file-service
- Migrate AI Chat to new file management
---------
Co-authored-by: Charles Bochet <charles@twenty.com>
## Summary
- **Consolidate logic function services**: Remove
`LogicFunctionMetadataService` and consolidate all logic function CRUD
operations into `LogicFunctionFromSourceService`, with a new
`LogicFunctionFromSourceHelperService` for shared validation/migration
logic
- **Introduce typed conversion utils following the skill pattern**: Add
`fromCreateLogicFunctionFromSourceInputToUniversalFlatLogicFunctionToCreate`
and `fromUpdateLogicFunctionFromSourceInputToFlatLogicFunctionToUpdate`
that convert DTO inputs directly to flat entities
(`UniversalFlatLogicFunction` / `FlatLogicFunction`), replacing the
previous intermediate `UpdateLogicFunctionMetadataParams` indirection
- **Simplify `CodeStepBuildService`**: Remove ~100 lines of manual
duplication logic by delegating to
`LogicFunctionFromSourceService.duplicateOneWithSource`
- **Remove completed 1-17 migration**: Delete
`MigrateWorkflowCodeStepsCommand` and associated utils that migrated
workflow code steps from serverless functions to logic functions
# Refactor workflow–logic function interaction
## Why
Workflow code steps and standalone logic functions shared the same build
layer and DB layer, which blurred two use cases: code steps belong to a
workflow version; standalone functions are deployable units. That made
workflow code steps harder to own and evolve.
## Goal
Treat code steps as **workflow-owned**: build and run them in workflow
context, and expose workflow-scoped APIs so the editor can load, test,
and save code step source without going through the generic
logic-function layer.
## Remove logic function layer
Package.json and yarn.lock are now on the application entity, so the
logic function layer is no longer used except as a legacy source for the
1.17 backfill. This PR removes all layer usage outside of that migration
and keeps only the entity for backfill.
### Summary
- **Kept:** `LogicFunctionLayerEntity` and its table, only used by the
1.17 backfill command to read legacy layer data and backfill application
package files.
- **Removed:** All other layer logic: CRUD, cache, resolvers, services,
DTOs, and frontend types. Logic functions now depend only on the
application for package/dependency context.
### Why Dependencies instead of Source for package files
Package.json and yarn.lock are the application’s dependency set and are
stored under the application in **FileFolder.Dependencies**. The build
service and drivers now read them only from Dependencies; nothing is
written to Source for these files.
# Introduction
In this PR we're refactoring the `FlatEntity` type to become a superset
of the `UniversalFlatEntity`.
Right now we're storing all the extra properties in `__universal`
property, at some point it might just be sibling to other entity and we
might rely on the `propertiesToCompare` constants and TypeScript
allowing passing a superset type into a smaller subset type
## FromTo utils
The entity to flat entity method now computes the universal information,
standardized a typing and pattern to do
## Example
Also strictly type
```ts
"bbb019ea-6205-498c-aea5-67bc53bce8a9": {
"workspaceId": "20202020-1c25-4d02-bf25-6aeccf7ea419",
"universalIdentifier": "20202020-d111-4d11-8d11-da5ab0a11002",
"applicationId": "d01b010d-b984-465b-b40b-370e954e5188",
"id": "bbb019ea-6205-498c-aea5-67bc53bce8a9",
"pageLayoutTabId": "791a512f-169f-4209-b731-aa86716668c6",
"title": "Deals by Company",
"type": "GRAPH",
"objectMetadataId": "9e14efea-df5b-4c0e-aba9-cfe455f32397",
"gridPosition": { "row": 0, "column": 6, "rowSpan": 6, "columnSpan": 6 },
"configuration": {
"color": "orange",
"orderBy": "FIELD_ASC",
"timezone": "UTC",
"displayLegend": true,
"displayDataLabel": false,
"showCenterMetric": true,
"configurationType": "PIE_CHART",
"firstDayOfTheWeek": 0,
"aggregateOperation": "COUNT",
"groupBySubFieldName": "name",
"groupByFieldMetadataId": "6673ff18-63d2-47a1-8f85-2b9b09ca27a5",
"aggregateFieldMetadataId": "8d64ee41-5dd4-4de6-945a-7c0c18399715"
},
"createdAt": "2026-01-28T14:08:52.140Z",
"updatedAt": "2026-01-28T14:08:52.140Z",
"deletedAt": null,
"__universal": {
"universalIdentifier": "20202020-d111-4d11-8d11-da5ab0a11002",
"applicationUniversalIdentifier": "20202020-64aa-4b6f-b003-9c74b97cee20",
"pageLayoutTabUniversalIdentifier": "20202020-d011-4d11-8d11-da5ab0a01001",
"objectMetadataUniversalIdentifier": "20202020-9549-49dd-b2b2-883999db8938",
"gridPosition": {
"row": 0,
"column": 6,
"rowSpan": 6,
"columnSpan": 6
},
"configuration": {
"color": "orange",
"orderBy": "FIELD_ASC",
"timezone": "UTC",
"displayLegend": true,
"displayDataLabel": false,
"showCenterMetric": true,
"configurationType": "PIE_CHART",
"firstDayOfTheWeek": 0,
"aggregateOperation": "COUNT",
"groupBySubFieldName": "name",
"aggregateFieldMetadataUniversalIdentifier": "20202020-d01a-4131-8a31-f123456789ab",
"groupByFieldMetadataUniversalIdentifier": "20202020-cbac-457e-b565-adece5fc815f"
}
}
},
```
Etienne