v0.44.1 — Large tool results no longer stall Windows

On Windows, Remember could make Claude Code pause for half a minute after a tool returned a lot of text, such as reading a big file. Remember took in that text one letter at a time, and on Windows each letter is slow to fetch, so 1 MB took about 25 seconds. It now takes the text in large blocks: well under a second for the same 1 MB. What Remember reads from the text is exactly the same as before.

Fixes #1040 (#1045). It also removes the slow line-by-line stdin read reported in #1048.

Thanks to @gwangyong-kim, who measured it and pointed at the fix, and to @senaiverse and @giovanni-orciuolo for the numbers in #1048.