feat: list the fixed app shortcuts in keyboard shortcuts

src/ui/locales/en.json

@@ -1514,6 +1514,18 @@
         "title": "Keyboard Shortcuts",
         "description": "Bind keys to actions in the terminal and the app, or change the built-in shortcuts.",
         "defaultsHeading": "Built-in Shortcuts",
+        "fixedHeading": "App Shortcuts",
+        "fixed": {
+          "splitRight": "Split right",
+          "splitDown": "Split down",
+          "zoomPane": "Zoom the focused pane",
+          "navigatePane": "Move between panes",
+          "nextTab": "Next tab",
+          "previousTab": "Previous tab",
+          "jumpTab": "Jump to tab",
+          "previousView": "Back to the previous sidebar view",
+          "fullscreen": "Toggle fullscreen"
+        },
         "customHeading": "Custom Shortcuts",
         "addBinding": "Add Shortcut",
         "addBindingTitle": "Add Shortcut",

src/ui/sidebar/FixedShortcutsList.tsx

@@ -0,0 +1,48 @@
+import { useTranslation } from "react-i18next";
+import { tabJumpHotkeyKeys } from "@/lib/tab-jump-hotkey";
+
+/** Shortcuts the shell handles itself; they cannot be rebound. */
+export function fixedShortcuts(): Array<{ keys: string[]; labelKey: string }> {
+  return [
+    { keys: ["Ctrl", "Shift", "\\"], labelKey: "splitRight" },
+    { keys: ["Ctrl", "Shift", "-"], labelKey: "splitDown" },
+    { keys: ["Ctrl", "Shift", "Enter"], labelKey: "zoomPane" },
+    { keys: ["Alt", "↑↓←→"], labelKey: "navigatePane" },
+    { keys: ["Ctrl", "Shift", "]"], labelKey: "nextTab" },
+    { keys: ["Ctrl", "Shift", "["], labelKey: "previousTab" },
+    { keys: tabJumpHotkeyKeys(), labelKey: "jumpTab" },
+    { keys: ["Ctrl", "Shift", "E"], labelKey: "previousView" },
+    { keys: ["Ctrl", "Shift", "F"], labelKey: "fullscreen" },
+  ];
+}
+
+export function FixedShortcutsList() {
+  const { t } = useTranslation();
+  return (
+    <div className="flex flex-col gap-1.5">
+      <span className="text-xs font-semibold text-muted-foreground">
+        {t("newUi.sidebar.keybindings.fixedHeading")}
+      </span>
+      {fixedShortcuts().map(({ keys, labelKey }) => (
+        <div
+          key={labelKey}
+          className="flex items-center justify-between gap-2 border border-border/60 px-2.5 py-1.5"
+        >
+          <span className="text-xs text-muted-foreground flex-1 min-w-0 truncate">
+            {t(`newUi.sidebar.keybindings.fixed.${labelKey}`)}
+          </span>
+          <div className="flex items-center gap-0.5 shrink-0">
+            {keys.map((key, index) => (
+              <kbd
+                key={index}
+                className="inline-flex items-center px-1 py-0.5 text-[10px] font-mono bg-muted border border-border/60 text-muted-foreground leading-none"
+              >
+                {key}
+              </kbd>
+            ))}
+          </div>
+        </div>
+      ))}
+    </div>
+  );
+}

src/ui/sidebar/KeybindingsDialog.tsx

@@ -26,6 +26,7 @@ import {
 import { Button } from "@/components/button";
 import { Input } from "@/components/input";
 import { Pencil, Plus, RotateCcw, Trash2 } from "lucide-react";
+import { FixedShortcutsList } from "./FixedShortcutsList";
 
 function formatCombo(combo: KeyCombo): string {
   const parts: string[] = [];
@@ -395,6 +396,7 @@ export function KeybindingsDialog({
                 })
               )}
             </div>
+            <FixedShortcutsList />
           </div>
 
           <div className="flex items-center justify-between gap-2 mt-2">

src/ui/tests/sidebar/FixedShortcutsList.test.tsx

@@ -0,0 +1,17 @@
+import { describe, expect, it } from "vitest";
+import { render, screen } from "@testing-library/react";
+import {
+  FixedShortcutsList,
+  fixedShortcuts,
+} from "@/sidebar/FixedShortcutsList";
+
+describe("FixedShortcutsList", () => {
+  it("lists every shell shortcut with its keys", () => {
+    render(<FixedShortcutsList />);
+    expect(
+      screen.getByText("newUi.sidebar.keybindings.fixed.splitRight"),
+    ).toBeTruthy();
+    expect(screen.getAllByText("Shift").length).toBeGreaterThan(3);
+    expect(fixedShortcuts().map((s) => s.labelKey)).toContain("jumpTab");
+  });
+});