Phoenix creator here. I'm happy to answer any questions about this! Also worth noting that phoenix.new is a global Elixir cluster that spans the planet. If you sign up in Australia, you get an IDE and agent placed in Sydney.
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quick followup if the agent's running on a separate machine and interacting remotely, how are failure modes handled across the boundary? like if the agent crashes mid-operation or sends a malformed command, does the remote runtime treat it as an external actor or is there a strategy linking both ends for fault recovery or rollback? just trying to understand where the fault tolerance guarantees begin and end across that split.