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User: 'The whole point of the view / server split is that multiple clients can have different views of the model.' Recorded as the RATIONALE rather than a fact, because it is the single premise the day's four rulings follow from -- client-local view stack, ephemeral drill, client-only view switching, and identical staging. gotcha 29 already said 'the model is shared and the UI is not'; this says why, and converts the split from a fact into a test: does the proposal force two clients into the same view? Plus the two integration doctrines: an autostash instruction is not permission to pop (the stash stack is shared across six other sessions), and a capability and its key can land in different tickets. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01FC2jVn8Au7E9JPkw6bwXXH