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openspec/changes/enterprise-gaming-party/proposal.md

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+# OpenSpec Change: enterprise-gaming-party
+
+- **Change ID**: enterprise-gaming-party
+- **Package**: `@suaveplan/party`
+- **Category**: gaming/multiplayer
+- **Target path**: `gaming/multiplayer/party`
+- **Status**: PROPOSED
+- **Date**: 2026-04-24
+- **Reference spec**: `/mnt/s/web/suaveplan/enterprise/party.md`
+
+---
+
+## Summary
+
+Deliver `@suaveplan/party` on the genesis branch from scratch at enterprise quality. The package provides a party/group system with invites, leadership transfer, and kick/promote mechanics. A `PartyManager` creates/destroys `Party` objects; a `Party` tracks members with role (leader/officer/member), handles invite expiry, and enforces `maxSize`. An `InviteTracker` manages pending invites with configurable TTL and accept/decline/expire lifecycle. Genesis adds Zod schemas, structured errors, OTel active-party gauge, injectable clock, and 100% coverage.
+
+---
+
+## Current-state audit (genesis)
+
+Package does not exist on genesis yet — fresh build.
+
+---
+
+## Available workspace deps on genesis
+
+| Package | Role |
+|---|---|
+| `@suaveplan/error` (`workspace:^`) | `PartyError`; `PARTY.*` codes |
+| `@suaveplan/types` (`workspace:^`) | `Clock`, `IdGenerator` |
+| `@suaveplan/events` (`workspace:^`) | `party:invite`, `party:joined`, `party:left`, `party:disbanded` events |
+| `zod` (`catalog:forms`) | `PartyConfig`, `PartyMember` schemas |
+| `@opentelemetry/api` (`catalog:observability`) | Active party gauge |
+
+---
+
+## Public API surface
+
+```ts
+type PartyRole = 'leader' | 'officer' | 'member'
+
+interface PartyMember {
+  playerId: string
+  displayName: string
+  role: PartyRole
+  joinedAt: number
+}
+
+interface PartyConfig {
+  maxSize?: number        // default 5
+  inviteTtl?: number      // seconds, default 60
+}
+
+function createPartyManager(options?: { clock?: Clock }): PartyManager
+
+interface PartyManager {
+  createParty(leaderId: string, leaderName: string, config?: PartyConfig): Party
+  getParty(partyId: string): Party | undefined
+  getPartyByPlayer(playerId: string): Party | undefined
+  disbandParty(partyId: string): void
+  readonly count: number
+}
+
+interface Party {
+  readonly id: string
+  readonly members: ReadonlyMap<string, PartyMember>
+  readonly leaderId: string
+  readonly size: number
+  invite(fromId: string, toId: string, toName: string): string   // returns inviteId
+  acceptInvite(inviteId: string, playerId: string): void
+  declineInvite(inviteId: string): void
+  leave(playerId: string): void
+  kick(by: string, target: string): void
+  promote(by: string, target: string, role: 'officer' | 'leader'): void
+  tick(dt: number): void    // expire invites
+}
+```
+
+### Error codes
+
+```ts
+type PartyErrorCode =
+  | 'PARTY_NOT_FOUND'
+  | 'PARTY_FULL'
+  | 'PARTY_MEMBER_NOT_FOUND'
+  | 'PARTY_INVITE_NOT_FOUND'
+  | 'PARTY_INVITE_EXPIRED'
+  | 'PARTY_PERMISSION_DENIED'
+  | 'PARTY_ALREADY_IN_PARTY'
+```
+
+---
+
+## File layout
+
+```text
+gaming/multiplayer/party/
+  package.json
+  tsconfig.json
+  vitest.config.ts
+  src/
+    index.ts
+    error-codes.ts
+    constants/index.ts
+    types/common.ts
+    types/common.md
+    core/
+      party/
+        party.ts
+        party.md
+        party.types.ts
+        party.test.ts
+        index.ts
+      party-manager/
+        party-manager.ts
+        party-manager.md
+        party-manager.types.ts
+        party-manager.test.ts
+        index.ts
+  tests/
+    integration.test.ts
+```
+
+---
+
+## Impact
+
+**Downstream**: `@suaveplan/react-social-game` shows party panel; `@suaveplan/lobby` transfers party to lobby. Prerequisites: `@suaveplan/error`, `@suaveplan/types`, `@suaveplan/events`.