---
id: server-architecture/004
title: Stage 0 — spec approved
epic: server-architecture
state: done
priority: 1
blocked_by: []
estimate: S
created: 2026-08-02
updated: 2026-08-02
claimed_by: null
claimed_at: null
delivers: []
review_artifact: null
---

## What this stage is

Not a build task — a checkpoint. The staged multiplayer PoC build plan (this task through `008`) only starts once the architecture it implements is actually settled, not still being argued about. It is: see `server-architecture/overview.md`'s "Architecture decisions" section (topology, persistence, runtime, netcode, pathfinding/sensing, identity) and `deliverables/004-server-setup-guide.md` (hosting). Both exist, both came out of a real architecture conversation with Kris, and this task exists so the staged plan below has a visible, tracked "and here's the checkpoint that unlocked it" rather than starting from an implicit assumption.

## Resolution

Done as of 2026-08-02 — this task is retroactive, recording that the precondition for stage 1 is already satisfied, not requesting new work.

## Where the work lands

N/A — this task records a decision, not code.

## Docs to read first

`server-architecture/overview.md`'s "Architecture decisions" and "Build plan" sections; `deliverables/004-server-setup-guide.md`.