fix: Lift menu state to App.vue and translate menu labels to Romanian

- Move menuOpen state from DashboardHeader to App.vue for proper state management
- Pass menuOpen as prop to DashboardHeader component
- Translate hamburger menu labels to Romanian (Navigation, Invoices, Bank & Cash, System, Cache Statistics)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

reports-app/frontend/src/App.vue

@@ -3,6 +3,7 @@
     <!-- New Navigation System -->
     <DashboardHeader
       v-if="authStore.isAuthenticated"
+      :menu-open="menuOpen"
       @menu-toggle="handleMenuToggle"
       @company-changed="handleCompanyChanged"
     />

reports-app/frontend/src/components/layout/DashboardHeader.vue

@@ -83,13 +83,18 @@ export default {
   components: {
     CompanySelectorMini,
   },
+  props: {
+    menuOpen: {
+      type: Boolean,
+      default: false,
+    },
+  },
   emits: ["menu-toggle", "company-changed"],
   setup(props, { emit }) {
     const router = useRouter();
     const companiesStore = useCompanyStore();
     const authStore = useAuthStore();
 
-    const menuOpen = ref(false);
     const userMenuOpen = ref(false);
 
     const selectedCompany = computed({
@@ -100,8 +105,7 @@ export default {
     const currentUser = computed(() => authStore.currentUser);
 
     const toggleMenu = () => {
-      menuOpen.value = !menuOpen.value;
+      emit("menu-toggle");
-      emit("menu-toggle", menuOpen.value);
     };
 
     const toggleUserMenu = () => {
@@ -136,7 +140,6 @@ export default {
     };
 
     return {
-      menuOpen,
       userMenuOpen,
       selectedCompany,
       currentUser,

reports-app/frontend/src/components/layout/HamburgerMenu.vue

@@ -11,7 +11,7 @@
     <nav class="slide-menu" :class="{ open: isOpen }">
       <!-- Navigation Section -->
       <div class="menu-section">
-        <h3 class="menu-title">Navigation</h3>
+        <h3 class="menu-title">Navigare</h3>
         <ul class="menu-list">
           <li class="menu-item">
             <router-link
@@ -31,8 +31,8 @@
               :class="{ active: $route.name === 'Invoices' }"
               @click="closeMenu"
             >
-              <i class="menu-icon pi pi-file-text"></i>
+              <i class="menu-icon pi pi-file"></i>
-              <span>Invoices</span>
+              <span>Facturi</span>
             </router-link>
           </li>
           <li class="menu-item">
@@ -43,7 +43,7 @@
               @click="closeMenu"
             >
               <i class="menu-icon pi pi-money-bill"></i>
-              <span>Bank & Cash</span>
+              <span>Casa și Banca</span>
             </router-link>
           </li>
           <li class="menu-item">
@@ -62,7 +62,7 @@
 
       <!-- System Section -->
       <div class="menu-section">
-        <h3 class="menu-title">System</h3>
+        <h3 class="menu-title">Sistem</h3>
         <ul class="menu-list">
           <li class="menu-item">
             <router-link
@@ -72,7 +72,7 @@
               @click="closeMenu"
             >
               <i class="menu-icon pi pi-chart-bar"></i>
-              <span>Cache Statistics</span>
+              <span>Statistici cache</span>
             </router-link>
           </li>
           <li class="menu-item">