---
title: "3DARCH-FT-23 — Discover seat availability and occupant identity"
description: "Enable a person to distinguish available and occupied chairs in the 3D office and map before attempting to claim a place."
---

# Discover seat availability and occupant identity

| Feature | Parent Epic | Delivery status | Status source | Owner | Approved for Solution |
|---|---|---|---|---|---|
| `3DARCH-FT-23` | [3DARCH-EP-6 — Coordinate Shared Workplace Seating](../../3darch-ep-6.md) | `IN_BACKLOG` | `EXACT` | 3D Architecture Wizzard team | No |

## Description

Enable a person to distinguish available and occupied chairs in the 3D office and map before attempting to claim a place.

## User or operator problem

People need to know which nearby seats are available and who occupies the others before acting.

## Expected value

Prevents unnecessary claim attempts and aligns 3D and map occupancy information.

## Scope

Includes nearby-chair availability, occupant identity, map parity, and live claim/release/reset updates.

### Exclusions

- Advance booking, recurring reservations, administrator override, and historical occupancy reporting are excluded.

## Acceptance outcomes

- [ ] Nearby chairs expose their current availability.
- [ ] Occupied chairs show the occupant's identity in the 3D scene.
- [ ] The floor map uses the same occupancy state and can reveal occupant names.
- [ ] Live claim/release/reset changes update both views without a reload.

## Dependencies

- [3DARCH-FT-17 — Orient with the live floor map](../../3darch-ep-3/features/3darch-ft-17.md)
- [3DARCH-FT-19 — Recognize coworkers by workplace identity](../../3darch-ep-4/features/3darch-ft-19.md)

## Risks

- The legacy client bulk-reset listener does not correctly consume the server reset payload.

## 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-23/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/nebula/src/components/interactables/ChairOverlay.tsx`](https://gitea.lego-cloud.eu/corp-v1-3darch-legacy/corp-v1-3darch-legacy/src/commit/c0ced47ecaf4426f47e5c2e4868677f7144b951a/apps/nebula/src/components/interactables/ChairOverlay.tsx)
- [`apps/nebula/src/components/Map/components/MapSeatLayer.tsx`](https://gitea.lego-cloud.eu/corp-v1-3darch-legacy/corp-v1-3darch-legacy/src/commit/c0ced47ecaf4426f47e5c2e4868677f7144b951a/apps/nebula/src/components/Map/components/MapSeatLayer.tsx)
- [`apps/nebula/src/stores/chairStore.ts`](https://gitea.lego-cloud.eu/corp-v1-3darch-legacy/corp-v1-3darch-legacy/src/commit/c0ced47ecaf4426f47e5c2e4868677f7144b951a/apps/nebula/src/stores/chairStore.ts)
- [`apps/nebula/src/socket-client.ts`](https://gitea.lego-cloud.eu/corp-v1-3darch-legacy/corp-v1-3darch-legacy/src/commit/c0ced47ecaf4426f47e5c2e4868677f7144b951a/apps/nebula/src/socket-client.ts)