stroblmeandClaude Fable 5
f300c43f3a
User code no longer execs in the engine. A pool of persistent worker subprocesses speaks one JSON object per line; the controller installs a proxy as the node's function, so every execution path funnels through it and the pipeline is untouched. A crash costs one subprocess, a per-node timeout is a kill, and cancelling from the canvas is that same kill. The workers run a venv of the user's own on the data volume, filled from a pip manifest versioned beside the flows. Applying it retires the workers and rebuilds, so a package lands without restarting the engine. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_017MeiWk3Yq12n2pTvnQWYvt