the async transport feels like the wrong layer to optimize. biggest issue i keep running into is agent session state being completely non-portable between tools. Claude Code dumps JSONL, Cursor splits data across SQLite and separate JSONL files, and none of them agree on schema or even what counts as a "turn". you can make the message bus async but if you can't reconstruct what the agent did from its own session data, that's the actual blocker. i'd rather see a shared session format than another pubsub layer.
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the async transport feels like the wrong layer to optimize. biggest issue i keep running into is agent session state being completely non-portable between tools. Claude Code dumps JSONL, Cursor splits data across SQLite and separate JSONL files, and none of them agree on schema or even what counts as a "turn". you can make the message bus async but if you can't reconstruct what the agent did from its own session data, that's the actual blocker. i'd rather see a shared session format than another pubsub layer.