---
title: "3DARCH-FT-25 — Expire stale seat claims at the workplace-day boundary"
description: "Enable participants to start each workplace day with stale reservations cleared rather than blocked by people who did not manually release yesterday's seats."
---

# Expire stale seat claims at the workplace-day boundary

| Feature | Parent Epic | Delivery status | Status source | Owner | Approved for Solution |
|---|---|---|---|---|---|
| `3DARCH-FT-25` | [3DARCH-EP-6 — Coordinate Shared Workplace Seating](../../3darch-ep-6.md) | `IN_BACKLOG` | `EXACT` | 3D Architecture Wizzard team | No |

## Description

Enable participants to start each workplace day with stale reservations cleared rather than blocked by people who did not manually release yesterday's seats.

## User or operator problem

The workplace needs stale seat claims cleared at a predictable day boundary without manual cleanup.

## Expected value

Restores fair seat availability each workplace day and makes reset failures diagnosable.

## Scope

Includes an explicit timezone/boundary, authoritative claim clearing, single multi-replica execution, client replacement, failure visibility, and safe retry.

### Exclusions

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

## Acceptance outcomes

- [ ] The governing workplace timezone and daily reset boundary are explicit.
- [ ] Every active claim becomes available with occupant and claim time cleared.
- [ ] Available seats remain unchanged.
- [ ] Only one reset is applied when the service has multiple replicas.
- [ ] Connected clients replace their occupancy state from the authoritative reset without reloading.
- [ ] A missed or failed reset is visible and can be retried safely.

## Dependencies

- [3DARCH-FT-23 — Discover seat availability and occupant identity](./3darch-ft-23.md)
- [3DARCH-FT-24 — Manage one daily seat reservation](./3darch-ft-24.md)

## Risks

- The reset timezone, multi-replica coordination, failure visibility, and client refresh behavior are incomplete.

## 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-25/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/singularity/src/jobs/seat-reset.ts`](https://gitea.lego-cloud.eu/corp-v1-3darch-legacy/corp-v1-3darch-legacy/src/commit/c0ced47ecaf4426f47e5c2e4868677f7144b951a/apps/singularity/src/jobs/seat-reset.ts)
- [`apps/singularity/src/test/jobs/seat-reset.test.ts`](https://gitea.lego-cloud.eu/corp-v1-3darch-legacy/corp-v1-3darch-legacy/src/commit/c0ced47ecaf4426f47e5c2e4868677f7144b951a/apps/singularity/src/test/jobs/seat-reset.test.ts)
- [`packages/utils/constants/src/socket.ts`](https://gitea.lego-cloud.eu/corp-v1-3darch-legacy/corp-v1-3darch-legacy/src/commit/c0ced47ecaf4426f47e5c2e4868677f7144b951a/packages/utils/constants/src/socket.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)