X Post Desk

Turn a folder of drafted X posts into one page of prefilled composer links that the user presses themselves. The agent writes each post as a folder (post.md: the root post, then each reply, separated by a line of =====; at most one picture; an optional picture description), and scripts/build_desk.py checks every part the way X counts it (280, any link or bare domain counts 23, wide characters count 2), refuses a link in the root post unless that is allowed, and a folder that does not keep the format, and writes one self-contained desk.html: a card per post with the picture, a button that opens X's composer with the text filled in, a field for the published post's link tha…