chore: delete old static frontend and rename frontend-next to frontend

frontend/src/hooks/useKeyboardShortcuts.ts

@@ -0,0 +1,64 @@
+import { useEffect, useRef, useCallback } from 'react';
+
+export interface ShortcutBinding {
+  keys: string; // e.g. "Control+k", " ", "m", "alt+1"
+  description: string;
+  action: () => void;
+}
+
+export const useKeyboardShortcuts = (bindings: ShortcutBinding[], enabled: boolean = true) => {
+  const bindingsRef = useRef<ShortcutBinding[]>(bindings);
+
+  useEffect(() => {
+    bindingsRef.current = bindings;
+  }, [bindings]);
+
+  const handleKeyDown = useCallback((e: KeyboardEvent) => {
+    if (!enabled) return;
+
+    // Avoid hijacking keystrokes when editing inputs
+    const active = document.activeElement;
+    if (active) {
+      const name = active.tagName.toLowerCase();
+      if (name === 'input' || name === 'textarea' || active.getAttribute('contenteditable') === 'true') {
+        return;
+      }
+    }
+
+    const pressedKey = e.key.toLowerCase();
+    const isCtrl = e.ctrlKey || e.metaKey;
+    const isAlt = e.altKey;
+    const isShift = e.shiftKey;
+
+    for (const binding of bindingsRef.current) {
+      const keys = binding.keys.toLowerCase().split('+');
+      
+      const requiresCtrl = keys.includes('control') || keys.includes('ctrl');
+      const requiresAlt = keys.includes('alt');
+      const requiresShift = keys.includes('shift');
+      
+      const baseKey = keys.filter(k => !['control', 'ctrl', 'alt', 'shift'].includes(k))[0];
+
+      const matchesCtrl = requiresCtrl ? isCtrl : !isCtrl;
+      const matchesAlt = requiresAlt ? isAlt : !isAlt;
+      const matchesShift = requiresShift ? isShift : !isShift;
+      
+      const normalizedBaseKey = baseKey === 'space' ? ' ' : baseKey;
+      const matchesBase = pressedKey === normalizedBaseKey;
+
+      if (matchesCtrl && matchesAlt && matchesShift && matchesBase) {
+        e.preventDefault();
+        binding.action();
+        break;
+      }
+    }
+  }, [enabled]);
+
+  useEffect(() => {
+    window.addEventListener('keydown', handleKeyDown);
+    return () => {
+      window.removeEventListener('keydown', handleKeyDown);
+    };
+  }, [handleKeyDown]);
+};
+export default useKeyboardShortcuts;