fix: the send button as far from the right edge as from top and bottom

internal/server/web/static/app.css

@@ -1095,3 +1095,5 @@ body.no-motion *, body.no-motion *::before, body.no-motion *::after, body.no-mot
 /* The + menu's roots (Терминал, Файловый менеджер) a little to the left of
    what they open, so the nesting reads. */
 .addmenu > .item { padding-left:7px; }
+/* The send button as far from the right edge as from the top and bottom. */
+.ai-entry .ai-send { margin-right:2px; }