This release introduces major trust and diagram enhancements, including a unified hybrid-trust model, absolute unit-based unitholder relationships, and free-form annotation lines and arrows on diagrams. It also improves runtime resilience with stronger client-side null safety and dedicated error/not-found handling.

Highlights

• Hybrid Trust Consolidation (Story 68.0): Consolidated hybrid trusts under the unit trust type with an isHybrid flag, simplifying trust modelling while retaining hybrid-specific semantics across forms, display, and diagram styling.
• Absolute Unit Holdings for Unitholders (Story 68.0): Migrated unitholder relationships from percentage allocation to absolute numberOfUnits + unitClass, aligned with shareholder behaviour across forms, validation, APIs, and diagram labels.
• Unit Capital Management for Trusts (Story 68.0): Added full trust unit-capital management (unit classes, rights, untracked units, notes) with supporting routes, hooks, and UI sections/dialogs.
• Diagram Annotation Lines and Arrows (Story 69.0): Introduced free-form canvas annotations with dedicated JointJS shape/service/hook support and context-menu styling controls (color, thickness, dash pattern, arrowheads).
• Client-Side Robustness Improvements: Added null-guard patterns around route/query hooks like useParams() and useSearchParams() to reduce runtime edge-case failures.
• Application Error Handling Improvements: Added dedicated error.tsx and not-found.tsx boundaries for clearer and more consistent failure/404 UX.