Add docker

frontend/src/store/themeStore.ts

@@ -0,0 +1,31 @@
+import { create } from 'zustand';
+import { persist } from 'zustand/middleware';
+
+export type Theme = 'light' | 'dark';
+
+interface ThemeStore {
+  theme: Theme;
+  setTheme: (theme: Theme) => void;
+  toggleTheme: () => void;
+}
+
+export const useThemeStore = create<ThemeStore>()(
+  persist(
+    (set) => ({
+      theme: 'light',
+      setTheme: (theme) => {
+        set({ theme });
+        document.documentElement.setAttribute('data-theme', theme);
+      },
+      toggleTheme: () =>
+        set((state) => {
+          const newTheme = state.theme === 'light' ? 'dark' : 'light';
+          document.documentElement.setAttribute('data-theme', newTheme);
+          return { theme: newTheme };
+        }),
+    }),
+    {
+      name: 'theme-storage',
+    }
+  )
+);