rspace-online/backlog/tasks/task-118.3 - Add-multiplayer-sync-to-rswag-collaborative-swag-design.md

id	title	status	assignee	created_date	labels	milestone	dependencies	parent_task_id	priority
TASK-118.3	Add multiplayer sync to rswag (collaborative swag design)	To Do		2026-03-16 00:05	multiplayer tier-2	Multiplayer Everything		TASK-118	low

Description

rswag is a client-side design canvas. Add Automerge sync so multiple space members can collaborate on swag designs.

New files:

• modules/rswag/schemas.ts — SwagDoc with designs, assets, selectedTemplate
• modules/rswag/local-first-client.ts — CRUD: saveDesign, updateCanvas, addAsset

Schema design:

SwagDoc {
  meta: { module: 'swag', collection: 'designs', version: 1 }
  designs: Record<string, { id, name, templateId, canvasState: string, createdBy, updatedAt }>
  activeDesignId: string
}

Component updates:

• Init local-first client on connectedCallback
• Debounced save of canvas state changes
• Live cursor/selection indicators for collaborators (stretch)

Acceptance Criteria

• #1 Design state syncs between participants in real-time
• #2 Canvas changes debounced and saved via Automerge
• #3 Design list shared across space members
• #4 Demo mode works locally