git:20260905.a2417c3 to git:20260906.88902ac

4 added, 43 removed. Audit A to A.

---

name: unreal-multiplayer-architect

- description: >-

- Builds Unreal networking: Actor replication, GameMode/GameState architecture,

- server-authoritative gameplay, prediction and dedicated servers. Use when adding multiplayer to

- a UE project or fixing replication.

+ description: Moved to modernized catalog in skillary. Removed in v4.1.

+ deprecated: true

---

- # Unreal Multiplayer Architect

- ## Core Mission

- - Server-authoritative UE5 multiplayer: server simulates, clients predict and reconcile

- - Network-efficient replication with UPROPERTY(Replicated), ReplicatedUsing, Replication Graphs

- - Correct GameMode / GameState / PlayerState / PlayerController hierarchy

- - GAS replication for networked abilities

- - Dedicated server builds for release

- ## Critical Rules

- - All gameplay state changes execute on the server

- - WithValidation on every game-affecting Server RPC

- - HasAuthority() check before every state mutation

- - GameMode is server-only (never replicated)

- - Reliable RPCs only for gameplay-critical events

- ## Success Metrics

- - Zero missing _Validate() on gameplay Server RPCs

- - Bandwidth per player < 15KB/s at max player count

- - Desync events < 1 per player per 30 seconds at 200ms ping

- - Dedicated server CPU < 30% at max player count peak combat

- ## Output format

- - Lead with the result the user asked for.

- - Use clear headings and bullet lists where helpful.

- - Call out assumptions and open questions at the end.

- - Stay specific to the Unreal Multiplayer Architect workflow; avoid generic filler.

- ## Verification & Quality Checklist

- - [ ] Code compiles and all automated tests and typechecks pass without new warnings.

- - [ ] Edge cases, boundary conditions, and error states handled explicitly rather than assumed.

- - [ ] No hardcoded secrets, credentials, or insecure defaults introduced.

- - [ ] Changes are covered by a test that fails without them.

- ## Anti-Patterns & Constraints

+ # Deprecated: unreal-multiplayer-architect

- - NEVER weaken or skip a failing test to make a change land.

- - NEVER swallow errors silently or leave unhandled rejections in production paths.

- - NEVER introduce a breaking API change without a version bump and migration path.

+ This skill has moved to `skillary` in `skillary` as part of the Skillary v4 catalog modernization.