f5de77a426
Port all 35 test declarations from Ink's log-update test suite, producing 41 new runtime tests (6 cursor tests run in both standard and incremental modes via describe.each). Covers standard rendering, incremental rendering (surgical updates, shrink, grow), clear/done reset, sync+update, cursor positioning, no-trailing-newline fullscreen mode, and render-to-empty. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>