---
title: "3DARCH-FT-27 — Follow generation progress and intermediate design states"
description: "Enable a person to understand which generation stage is running and see the apartment emerge instead of waiting for an opaque request."
---

# Follow generation progress and intermediate design states

| Feature | Parent Epic | Delivery status | Status source | Owner | Approved for Solution |
|---|---|---|---|---|---|
| `3DARCH-FT-27` | [3DARCH-EP-7 — Generate a Furnished 3D Apartment from a Brief](../../3darch-ep-7.md) | `IN_BACKLOG` | `EXACT` | 3D Architecture Wizzard team | No |

## Description

Enable a person to understand which generation stage is running and see the apartment emerge instead of waiting for an opaque request.

## User or operator problem

A person needs visible generation stages and intermediate results rather than waiting on an opaque long-running request.

## Expected value

Builds trust in long-running generation through progressive feedback and safe failure handling.

## Scope

Includes ordered stage reporting, intermediate structural/furnished previews, final-scene selection, and failure cleanup.

### Exclusions

- Office, retail, and factory generation, export, and loading scenes into Nebula are excluded.

## Acceptance outcomes

- [ ] Progress identifies requirements, structure, furniture, and lighting stages in order.
- [ ] Structural and furnished intermediate scenes replace the current preview as they become available.
- [ ] Completion selects the final persisted scene.
- [ ] Failure produces a visible message and does not leave a false completed project.

## Dependencies

- [3DARCH-FT-26 — Generate a complete apartment concept from a natural-language brief](./3darch-ft-26.md)

## Risks

- Failure cleanup must prevent partial generation output from appearing as a completed project.

## Human approval

Linas approved this Feature for documentation on 2026-09-02T10:40:43.220Z. It is **not Approved for Solution** and has no implementation approval.

- [Documentation decision](https://discord.com/channels/1518726359512387766/1543925247361814568/1544658325738885201)

## Delivery status evidence

The Feature was separately registered at `IN_BACKLOG` as an accepted catalogue boundary. This records backlog retention, not design or delivery progress.

- Event: Catalogue registration
- Actor and authority: Linas — Human project team member
- Reason: The Feature catalogue was accepted for governed documentation and retained in the backlog.
- [Status evidence](https://discord.com/channels/1518726359512387766/1543925247361814568/1544658325738885201)

## Architecture traceability

- Requirements: none derived.
- Readiness: Not started.

Architecture solution work must not begin until a separate human **Approved for Solution** decision is recorded.

## Tasks

[Review the Tasks group](./3darch-ft-27/tasks.md). No canonical implementation Tasks have been defined.

## Original source

- [Discord – Scope – Linas: original Feature request](https://discord.com/channels/1518726359512387766/1543925247361814568/1544647879111483562)
- [Discord – Scope – Linas: proceed with documented mapping](https://discord.com/channels/1518726359512387766/1543925247361814568/1544658325738885201)

### Legacy implementation evidence

The Feature boundary was mined from legacy revision `c0ced47ecaf4426f47e5c2e4868677f7144b951a`.

- [`apps/archwiz-portal/src/api/client.ts`](https://gitea.lego-cloud.eu/corp-v1-3darch-legacy/corp-v1-3darch-legacy/src/commit/c0ced47ecaf4426f47e5c2e4868677f7144b951a/apps/archwiz-portal/src/api/client.ts)
- [`apps/archwiz-portal/src/App.tsx`](https://gitea.lego-cloud.eu/corp-v1-3darch-legacy/corp-v1-3darch-legacy/src/commit/c0ced47ecaf4426f47e5c2e4868677f7144b951a/apps/archwiz-portal/src/App.tsx)
- [`apps/archwiz-portal/src/components/LeftSidebar.tsx`](https://gitea.lego-cloud.eu/corp-v1-3darch-legacy/corp-v1-3darch-legacy/src/commit/c0ced47ecaf4426f47e5c2e4868677f7144b951a/apps/archwiz-portal/src/components/LeftSidebar.tsx)
- [`apps/archwiz-forge/src/routes/generate.ts`](https://gitea.lego-cloud.eu/corp-v1-3darch-legacy/corp-v1-3darch-legacy/src/commit/c0ced47ecaf4426f47e5c2e4868677f7144b951a/apps/archwiz-forge/src/routes/generate.ts)