Core Model V2

Task 70 formalizes a unified, context-aware core model for Tov+.

Scope

• contexts become the shared binding layer for occasion-, event-, and actor-scoped records.
• event_participations capture entry and exit windows instead of assuming event-wide access.
• design_themes make visual language and printable defaults first-class persisted state.
• module_instances provide a context-bound runtime view over module usage.
• timeline items now carry both context_id and visibility_scope.

Runtime

• GET /v1/occasions/:occasion_id/core-model-v2 returns the planner aggregate view.
• timeline create and update flows resolve a concrete context before persisting items.
• vendor timeline reads additionally enforce event participation windows.
• the planner shell consumes design_theme.tokens through CSS custom properties.

Database

Phase 30 adds:

• contexts
• design_themes
• event_participations
• module_instances
• context and visibility columns on timeline and module lifecycle tables

The fixture set now seeds both demo occasions with contexts, theme records, participations, and module-instance rows so the local environment reflects the refined model.