Etienne
c6309fd92b
## Context
The workflow builder has a "Tidy up" action that auto-positions steps
using a
Dagre layout. However, this lived entirely in the frontend and depended
on node
dimensions measured by React Flow after rendering in the browser.
As a result, workflows (and steps) created through AI Chat / MCP tools
were never
laid out: `create_complete_workflow` accepted optional `stepPositions`
that the
LLM had to invent, and `create_workflow_version_step` stored an optional
position
verbatim. In practice this produced overlapping / poorly positioned
steps.
## What this does
Extracts the tidy-up layout into a pure, frontend-free util in
`twenty-shared` and
reuses it from both the frontend tidy-up and the server, so
AI/MCP-created
workflows are auto-laid out at creation time.
### twenty-shared
- New `computeWorkflowLayout({ nodes, edges, options? })` — a pure Dagre
layout over
a minimal `{ id, width, height }` / `{ source, target }` graph,
returning
top-left-anchored positions (matching React Flow). Ignores edges
pointing to
unknown nodes.
- New constants: `WORKFLOW_LAYOUT_DEFAULT_OPTIONS`
(ranksep/nodesep/rankdir) and
`WORKFLOW_DIAGRAM_DEFAULT_NODE_DIMENSIONS` (estimated node size for
server-side
layout, where measured sizes are unavailable).
- Added `@dagrejs/dagre` dependency.
### twenty-front
- `getOrganizedDiagram` now delegates to `computeWorkflowLayout`,
passing real
measured node sizes. No behavior change for users.
### twenty-server
- New `WorkflowVersionWorkspaceService.autoLayoutWorkflowVersion(...)`
builds the
graph topology via the existing `buildWorkflowGraph` (covers if-else
branches and
iterator loops), feeds estimated node sizes into
`computeWorkflowLayout`, and
persists through the existing `updateWorkflowVersionPositions`.
- `create_complete_workflow`: removed `stepPositions` from the tool
schema; the
server always auto-lays out after creation/edges.
- `create_workflow_version_step`: re-tidies the whole version after each
added step
(wired at the tool level so the builder UI is unaffected) and dropped
the now
redundant `position` field.
## Notes
- Server-side layout uses estimated node sizes, so it is "good enough";
opening the
workflow and running the existing FE tidy-up refines it with real
measured sizes.
- Auto-layout is wired in the MCP tools, not in the shared creation
service, so
manual step creation in the builder UI is unchanged.
## Test plan
- [x] `twenty-shared` unit tests for `computeWorkflowLayout` (linear
chain, if-else
spread, dangling-edge safety)
- [x] `twenty-shared` builds; `twenty-server` and `twenty-front`
typecheck
- [x] Lint/format clean on changed files
- [ ] Create a workflow via AI Chat / MCP and confirm steps are laid out
without
overlap
- [x] Add a step via MCP and confirm the version is re-tidied
- [ ] Frontend "Tidy up" still behaves as before
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