fix(ui): let Escape reach the terminal PTY from the context panel

The desktop ContextPanel captured Escape on the panel aside and closed
the whole pane before ghostty-web's bubble-phase listener could forward
the key. Skip closing when the event target is inside the terminal so
apps like Vim can leave insert mode.

Co-authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>

packages/ui/src/components/layout/ContextPanel.tsx

@@ -45,6 +45,7 @@ import {
   type EmbeddedSessionRuntimeBootstrap,
 } from './contextPanelEmbeddedChat';
 import { getContextSurfaceWidthFraction } from '@/lib/surfaces/registry';
+import { isTerminalEventTarget } from '@/lib/terminalFocus';
 import {
   type PreviewElementMetadata,
   isPreviewElementMetadata,
@@ -2453,6 +2454,13 @@ export const ContextPanel: React.FC = () => {
       return;
     }
 
+    // Terminal owns Escape so the PTY receives it (e.g. Vim Normal mode).
+    // ghostty-web listens in the bubble phase; stopping capture here would
+    // swallow the key before the terminal ever sees it (issue #2644).
+    if (isTerminalEventTarget(event.target)) {
+      return;
+    }
+
     event.preventDefault();
     event.stopPropagation();
     handleClose();