Phase 1 — Fix scope system: new scope-resolver.ts resolves global vs
space-scoped docId prefixes. Server middleware sets effectiveSpace on
Hono context. All 18 modules updated to use dataSpace for Automerge
doc access while keeping space for display. Client runtime gets
setModuleScopes() and resolveDocSpace() for local-first scope
resolution.
Phase 2 — Seamless cross-space navigation: TabCache now tracks panes
per space:module key. OfflineRuntime maintains lazy WebSocket
connections per space. Space-switcher dispatches space-switch event
handled client-side with history.pushState instead of full reload.
Phase 3 — Spaces as layers: Layer type extended with spaceSlug and
spaceRole. Tab bar gains "Add Space Layer" picker. Canvas renders
cross-space shapes with visual indicators. Space layers persisted as
SpaceRefs via nesting API. Runtime provides getAllActiveSpaces() and
subscribeModuleAcrossSpaces() for module-level data aggregation.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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