~anthropic/claude-sonnet-latest → B (6:4)

Side A vendors a whole speculative RocksDB abstraction crate (with docs, examples, benchmarks, licenses) plus a huge dependency/Cargo.lock churn, but the actual integration into the server is thin (one entity_store wrapper) and the streaming replay refactor is modest; much of the diff is generated noise rather than durable design. Side B is a focused, coherent refactor that removes ad-hoc identity canonicalization scattered across events/reducer, introduces clear identity.rs/canonical_path.rs modules, fixes wire-format inconsistencies (@ handling), and updates tests/CLI/docs consistently, yielding a cleaner, more correct codebase with less risk and less bloat.