National Annexes & Reinforcement UI

What's New

• Swedish National Annex - Added version picker for EKS 11, EKS 12, and BFS 2024:6
• National Annex selection UI - Eurocode generation picker with Denmark and Finland marked as coming soon
• Vertical stirrup layout - Shear reinforcement visualization with bar-stirrup intersection warnings
• Steel reinforcement page - Dedicated material page with grade cards and LaTeX symbols
• Plastic hardening toggle - Steel stress-strain diagram now supports hardening branch display
• Duplicate loads detection - Smart banner detects duplicate load cases with one-click consolidation
• Selection preview - Reinforcement bars DataGrid shows selection preview on hover
• What's New dialog - Release notes system with in-app changelog display
• Smart bar placement - Corner-first algorithm for the Add Bar button

Improvements

• Centralized multi-select and bulk delete into DataGridContainer
• Split WPF monolith into Core class library for faster builds
• Adopted state-first data flow pattern for all ViewModel mutations
• Replaced event handlers with reactive subscriptions throughout
• Column visibility flyout for Area/Weight in reinforcement grids
• Reorganized concrete grade picker with Selected, Recent, and Pinned sections
• Consolidated grouping controls into cogwheel settings popup
• Separated Basic Loads and Load Combinations into dedicated nav items
• Theme-aware brushes for readonly DataGrid cells and preview panels
• Collapsible bar schedule section and reinforcement DataGrid when empty

Bug Fixes

• Fixed DataGrid cell selection visuals lost on toolbar click
• Fixed settings popups not closing before switching grouping containers
• Fixed ComboBox scroll-to-change hijacking parent scroll
• Fixed empty rows on initial load in reinforcement DataGrid
• Fixed cogwheel hover animation namescope error
• Fixed LaTeX rendering for colors, small values, and operator precedence
• Fixed section preview stroke and fill mismatch in bar schedule