fix: Docker build and runtime fixes

- Fix duplicate 'signature' variable in webhooks.ts
- Add Prisma binary target for Alpine Linux
- Fix tsconfig path alias (@/* -> ./src/*)
- Add missing next-themes dependency
- Add build args for NEXT_PUBLIC_* env vars
- Fix SSR issues with zustand and providers
- Add providers-wrapper with dynamic ssr:false import
- Add SSL certs and public dir for nginx
- Update Dockerfiles for proper Prisma engine handling

frontend/src/lib/store.ts

@@ -1,5 +1,4 @@
 import { create } from 'zustand';
-import { persist } from 'zustand/middleware';
 
 export interface User {
   id: string;
@@ -21,22 +20,13 @@ interface AppState {
   logout: () => void;
 }
 
-export const useStore = create<AppState>()(
-  persist(
-    (set) => ({
-      user: null,
-      token: null,
-      isAuthenticated: false,
-      setUser: (user) => set({ user, isAuthenticated: !!user }),
-      setToken: (token) => set({ token }),
-      logout: () => {
-        localStorage.removeItem('token');
-        set({ user: null, token: null, isAuthenticated: false });
-      },
-    }),
-    {
-      name: 'coop-credits-storage',
-      partialize: (state) => ({ user: state.user, token: state.token }),
-    }
-  )
-);
+export const useStore = create<AppState>()((set) => ({
+  user: null,
+  token: null,
+  isAuthenticated: false,
+  setUser: (user) => set({ user, isAuthenticated: !!user }),
+  setToken: (token) => set({ token }),
+  logout: () => {
+    set({ user: null, token: null, isAuthenticated: false });
+  },
+}));