feat(terminal): add Cmd+Arrow and Shift+Enter keyboard shortcuts

- Cmd+Left/Right sends Home/End escape sequences (macOS)
- Shift+Enter sends Alt+Enter for multi-line input in CLI agents

Author: maskar

src/components/TerminalView.tsx

@@ -171,7 +171,10 @@ export function TerminalView(props: TerminalViewProps) {
     });
 
     term.attachCustomKeyEventHandler((e: KeyboardEvent) => {
-      if (e.type !== 'keydown') return true;
+      if (e.type !== 'keydown') {
+        if (e.key === 'Enter' && e.shiftKey) return false;
+        return true;
+      }
 
       // Let global app shortcuts pass through to the window handler
       if (matchesGlobalShortcut(e)) return false;
@@ -197,6 +200,25 @@ export function TerminalView(props: TerminalViewProps) {
         return false;
       }
 
+      // Shift+Enter → send as Alt+Enter (newline in CLI agents like Claude Code)
+      if (e.key === 'Enter' && e.shiftKey) {
+        e.preventDefault();
+        enqueueInput('\x1b\r');
+        return false;
+      }
+
+      // CmdOrCtrl+Left/Right → Home/End escape sequences
+      if ((isMac ? e.metaKey : e.ctrlKey) && !e.altKey && !(isMac ? e.ctrlKey : e.metaKey)) {
+        if (e.key === 'ArrowLeft') {
+          enqueueInput('\x1b[H'); // Home
+          return false;
+        }
+        if (e.key === 'ArrowRight') {
+          enqueueInput('\x1b[F'); // End
+          return false;
+        }
+      }
+
       return true;
     });