- _term_write(): route OSC/control sequences through Textual's driver writer
queue instead of direct sys.__stdout__. A title/OSC write landing mid-frame
during streaming used to split Textual's own escape sequences, rendering as
flashing ANSI garbage; serializing on the same writer queue lands it cleanly.
- sidebar: wrap the session list in a VerticalScroll (#sidebar-scroll) so it
scrolls when overflowing (scrollbar-gutter reserved to avoid row reflow);
inner #sidebar Static keeps padding so the click hit-test math is unchanged.
Keyboard session-switch scrolls the active session into view.
nianyucatfish
607cbdaf13
