Move raw APC/DCS emission from before cell rendering to after, wrapping
with cursor-hide/show sequences to prevent cursor flicker. Remove CUP
positioning from rawWritesAtRow entries since the cursor is already at
the correct position via CR+LF or moveCursorTo. Refactor ImageShowTool
to use writeRaw via TerminalWriteContext context instead of embedding
raw sequences in Ink's virtual DOM RawAnsi.
Co-Authored-By: Claude Big Pickle <noreply@anthropic.com>
