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gum draws its confirm UI on stderr, so the migration's `2>/dev/null` threw away the whole prompt while gum still held the terminal in raw mode reading keys. With a browser open, an update stopped after "Running migration (1786643346)" on an unpainted screen with no way to tell it was waiting for an answer. Nothing else in the repo suppresses gum's stderr; the redirect only ever hid gum's own error in the no-terminal case, where the migration already explains itself on stderr before deferring. Fixes #6841 Claude-Session: https://claude.ai/code/session_01So4yKzTDdJJp7orjnF8i1J Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>