Refactor docs: topic folders, TOON, XCUT, protocol sync
- Migrated all topic documentation into dedicated folders with canonical `README.md`, `ISSUES.md`, and `TODO.md` per topic (e.g., `LOGGING/`, `SIGNALR/`, `BINARY/`, `TOON/`).
- Added comprehensive TOON serializer documentation: design, format, options, attributes, inference, issues, and TODOs.
- Introduced `XCUT` folder for cross-cutting issues and TODOs, with canonical entries and topic cross-references.
- Updated all references and navigation to use new folder-based doc paths; fixed links and clarified doc structure.
- Enhanced AI agent protocol: enforce session skill preloading, `[LOADED_DOCS: ...]` short-name prefix, and mandatory `docs-check` skill for doc/code sync.
- Updated `.csproj` to include all `README.md` files for IDE visibility.
- Improved and clarified SignalR, grid, and project-level documentation.
- Minor code/test tweaks and doc content corrections for consistency.
Split MGGRID.md into focused docs (parameters, CRUD, layout, detail, rendering, InfoPanel, toolbar, columns, datasource) under AyCode.Blazor.Components/docs/. Updated all references, READMEs, and project/solution files to match new structure. Clarified doc layering conventions and core doc links. No code changes—documentation and project organization only.
Added AcBinarySerializable and ToonDescription to DTOs/entities for source-generated serialization. Enabled AOT compilation for Blazor/WebAssembly projects. Integrated AyCode.Core.Serializers.SourceGenerator as analyzer. Updated solution and project files, improved entity metadata, and adjusted imports. Commented out InitializeComponent in WinUI App for startup handling.