feat: list the fixed app shortcuts in keyboard shortcuts

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>
+  );
+}