Refactored BinaryTypeCode to reserve 0..63 for FixObj slot indices, enabling direct array access for object wrappers. Introduced a new polymorphic type prefix system for properties whose runtime type differs from their declared type, with first/repeated occurrence markers and combined ref-tracking support. Unified wrapper slot caching for SGen and runtime types, improving performance and eliminating dictionary lookups in hot paths. Updated code generation, tests, and constants to use the new slot system. Added new settings and utility scripts. Overall, serialization is now faster, more robust, and extensible.
Major overhaul of binary serializer/deserializer tests: split and expand test coverage for primitives, objects, navigation, generics, circular refs, and edge cases. Fix critical bugs in property skipping, string interning, type mismatch diagnostics, nullable assignment, and VarInt decoding. Add WASM-optimized deserialization options with string caching. Switch SignalR compression from Brotli to Gzip and introduce GzipHelper. Add comprehensive StockTaking test models and real-world bug reproductions. Improve diagnostics, test discovery, and add benchmark/utility scripts.
Loretta