026f64f8e0
* fix(tui): commit composer input bursts immediately Salvage the WSL/terminal multi-character input burst fix with focused regression coverage so delayed pseudo-paste buffers cannot reorder later edits. * fix(tui): keep newline input bursts on paste path Preserve paste handling for multi-character chunks with newlines while keeping repeated printable key bursts on the immediate composer path. * refactor(tui): share composer frame batch interval Use one frame-sized batching constant for parent updates, local renders, and input burst flushes.