Modernize benchmarks, simplify attributes, doc cleanup
- Benchmark output now reports per-op µs and KB/op; added helpers for unit conversion and updated all output formats and headers.
- Split SetupAllocBytes into SetupSerializeAllocBytes and SetupDeserializeAllocBytes for finer allocation reporting.
- Simplified [AcBinarySerializable] usage in test models to single-argument form.
- Edited documentation for clarity, brevity, and consistency; improved navigation, updated technical details, and harmonized terminology across .md files.
Expand META-TODO scope; add BINARY_TODO entries; doc updates
- Broadened ACCORE-META-T-F8R3 to cover SKILL.md/registry text drift, not just summary staleness
- Added concrete SKILL.md drift examples and clarified fix direction
- Added BINARY_TODOs for Id detection (convention/attribute) and serializer-native ignore attribute
- Updated SIGNALR_BINARY_PROTOCOL_TODO.md and ADR 0001 to clarify deferral of decorator base/handshake TODOs
- Minor topic code length and JSON-in-Binary tech debt clarifications
- Synced references and cross-links with latest protocol decisions