openai/gpt-5.3-chat → B (3:1)

Commit B introduces a substantial architectural change: a new durable storage crate backed by RocksDB, integration into the server, streaming event log replay to reduce memory usage, and an entity store that moves large payloads off-heap. This impacts persistence, startup performance, and system design across multiple modules. In contrast, Commit A mainly refactors the resolver system, fixes a bug in external indexing, and adds GitHub card rendering and UI improvements. While A is sizable and user-facing, B delivers deeper infrastructure changes with broader long-term impact.