Plan for executing the tightened spec. TDD per task: RED test first,
minimal GREEN impl, commit. Phases 1-2 land the cursor + atomic batch
commit; phase 3 validates config; phase 4 fixes the UI mode-toggle
leakage + empty-targets guard + render-preview pane; phases 5-6 close
with full-lifecycle IT and regression sweep.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>