review.py held three separable concerns. Two move out:
_render.py emptiness, status_line, filename_line, title_line, render --
pure state-to-text, no toolkit and no transitions
_undo.py can_undo, on_undo, forget_last -- correcting the tally and
putting the on-screen video back at the front of the queue
review.py keeps the state transitions and re-exports all eight names through
__all__, so ui.py and test_review.py reach them at review.* exactly as before;
verified by resolving every name in __all__.
Both new modules reference SessionState under TYPE_CHECKING only, so there is
no runtime cycle. Also inlined _worker_message, a single-caller passthrough
that just returned event.message.
review.py 330 -> 196, _render.py 107, _undo.py 74.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011w2Pj4Ek3ZNMQVYcFHgXDY
