Make the terminal dock toggle, scroll, and remember commands honestly.

The desktop trigger now collapses through the shared toggle, the log stays on the newest line, Shift+K is left to the browser, history walks like a shell, and maximize keeps one accessible name.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/app/shared/terminal/terminal-dock.scss

@@ -90,6 +90,11 @@
   font: inherit;
 }
 
+.terminal-dock-control[aria-pressed='true'] {
+  border-color: var(--surface-glass-border-strong);
+  background: var(--color-surface);
+}
+
 .terminal-dock-log {
   overflow: auto;
   min-height: 6rem;