feat(plan): page, sidebar entry, and route registration

src/admin/components/Sidebar.tsx

@@ -155,6 +155,26 @@ const menuSections: MenuSection[] = [
           </svg>
         ),
       },
+      {
+        path: "/plan-work",
+        label: "Plán prací",
+        permission: ["attendance.manage", "attendance.record"],
+        icon: (
+          <svg
+            viewBox="0 0 24 24"
+            fill="none"
+            stroke="currentColor"
+            strokeWidth="2"
+            strokeLinecap="round"
+            strokeLinejoin="round"
+          >
+            <rect x="3" y="4" width="18" height="18" rx="2" />
+            <line x1="16" y1="2" x2="16" y2="6" />
+            <line x1="8" y1="2" x2="8" y2="6" />
+            <line x1="3" y1="10" x2="21" y2="10" />
+          </svg>
+        ),
+      },
     ],
   },
   {