Collapse the terminal dock from Escape anywhere in the panel.

Drop unused suggestion state and copy, and give the panel a reduced-motion-aware open transition.

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

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

@@ -13,7 +13,13 @@
   </button>
 
   @if (open()) {
-    <section class="terminal-dock-panel" [id]="panelId" [attr.aria-label]="copy().panelLabel">
+    <section
+      class="terminal-dock-panel"
+      [id]="panelId"
+      tabindex="-1"
+      [attr.aria-label]="copy().panelLabel"
+      (keydown)="onPanelKeydown($event)"
+    >
       <div class="terminal-dock-toolbar cluster">
         <p class="terminal-dock-title">{{ copy().panelLabel }}</p>
         <button