fix: change terminal shortcuts to avoid conflicts with shell signals

- Split right: Cmd+Shift+D / Ctrl+Shift+D (was Cmd+D which conflicts with EOF)
- Split down: Cmd+Shift+E / Ctrl+Shift+E
- Close: Cmd+Shift+W / Ctrl+Shift+W (was Cmd+W which conflicts with delete word)

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/app/src/store/app-store.ts

@@ -195,9 +195,10 @@ export const DEFAULT_KEYBOARD_SHORTCUTS: KeyboardShortcuts = {
   addProfile: "N", // Only active in profiles view
 
   // Terminal shortcuts (only active in terminal view)
-  splitTerminalRight: "Cmd+D",
-  splitTerminalDown: "Cmd+Shift+D",
-  closeTerminal: "Cmd+W",
+  // Using Shift modifier to avoid conflicts with terminal signals (Ctrl+D=EOF, Ctrl+W=delete word)
+  splitTerminalRight: "Cmd+Shift+D",
+  splitTerminalDown: "Cmd+Shift+E",
+  closeTerminal: "Cmd+Shift+W",
 };
 
 export interface ImageAttachment {