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+# WooNooW Standalone Mode - Complete Summary
+
+## 📋 Overview
+
+WooNooW now supports **three distinct admin interface modes**, providing flexibility for different workflows and use cases.
+
+---
+
+## 🎯 Three Admin Modes
+
+### 1. **Normal Mode (wp-admin)**
+- **URL:** `/wp-admin/admin.php?page=woonoow`
+- **Layout:** WordPress admin sidebar + WooNooW SPA
+- **Settings Submenu:** Hidden (use WooCommerce settings)
+- **Use Case:** Traditional WordPress admin workflow
+
+### 2. **Fullscreen Mode**
+- **Toggle:** Fullscreen button in header
+- **Layout:** WooNooW SPA only (no WordPress chrome)
+- **Settings Submenu:** Hidden
+- **Use Case:** Focus mode for order processing
+
+### 3. **Standalone Mode** ✨ NEW
+- **URL:** `https://yoursite.com/admin`
+- **Layout:** Complete standalone application
+- **Settings Submenu:** Visible with SPA settings pages
+- **Use Case:** Quick daily access, mobile-friendly
+
+---
+
+## 🔐 Standalone Mode Features
+
+### Authentication
+- **Custom login page:** `/admin#/login`
+- **WordPress integration:** Uses native WordPress authentication
+- **Session persistence:** Login state shared across all modes
+- **Logout:** Dedicated logout button in header
+
+### Navigation
+- **"WordPress" button:** Quick access to wp-admin
+- **Admin bar link:** Access standalone from wp-admin
+- **Settings submenu:** Full settings navigation (standalone only)
+
+### Settings Structure (Option A - Everyday Use)
+```
+Settings (Standalone Only)
+├── WooNooW (plugin settings)
+├── General (store settings) - SPA
+├── Payments (gateways) - SPA
+├── Shipping (zones, methods) - SPA
+├── Products (inventory) - SPA
+├── Tax (rates) - SPA
+├── Accounts & Privacy - SPA
+├── Emails (templates) - SPA
+├── Advanced - Bridge to wp-admin
+├── Integration - Bridge to wp-admin
+├── Status - Bridge to wp-admin
+└── Extensions - Bridge to wp-admin
+```
+
+**Strategy:** Focus on most-used settings in SPA, bridge to wp-admin for advanced features.
+
+---
+
+## 🔧 Technical Implementation
+
+### Backend Files
+
+**`includes/Admin/StandaloneAdmin.php`**
+- Handles `/admin` and `/admin/` requests
+- Renders standalone HTML template
+- Localizes `WNW_CONFIG` with `standaloneMode: true`
+- Provides authentication state and store settings
+
+**`includes/Admin/Menu.php`**
+- Added admin bar link to standalone mode
+- Icon: `dashicons-store`
+- Capability: `manage_woocommerce`
+
+**`includes/Api/AuthController.php`**
+- Login endpoint: `POST /wp-json/woonoow/v1/auth/login`
+- Authentication sequence:
+  1. `wp_authenticate()`
+  2. `wp_clear_auth_cookie()`
+  3. `wp_set_current_user()`
+  4. `wp_set_auth_cookie()`
+  5. `do_action('wp_login')`
+- Ensures session persistence
+
+### Frontend Files
+
+**`admin-spa/src/App.tsx`**
+- `AuthWrapper` component handles authentication
+- Login/logout flow with page reload
+- "WordPress" button (standalone only)
+- "Logout" button (standalone only)
+
+**`admin-spa/src/routes/Login.tsx`**
+- Custom login form
+- Username/password authentication
+- Page reload after login to pick up cookies/nonces
+
+**`admin-spa/src/nav/tree.ts`**
+- Dynamic settings submenu using getter
+- Only shows in standalone mode:
+```typescript
+get children() {
+  const isStandalone = (window as any).WNW_CONFIG?.standaloneMode;
+  if (!isStandalone) return [];
+  return [ /* settings items */ ];
+}
+```
+
+**`admin-spa/src/routes/Settings/`**
+- `index.tsx` - WooNooW settings
+- `General.tsx` - General settings placeholder
+- `Payments.tsx` - Payment settings placeholder
+- `Shipping.tsx` - Shipping settings placeholder
+
+---
+
+## 🔄 Mode Switching
+
+### From wp-admin to Standalone
+1. Click "WooNooW" in admin bar
+2. Opens `/admin` in same tab
+3. Session persists
+
+### From Standalone to wp-admin
+1. Click "WordPress" button in header
+2. Opens `/wp-admin` in same tab
+3. Session persists
+
+### To Fullscreen
+- Click fullscreen toggle in any mode
+- Maximizes workspace
+
+---
+
+## 🧪 Testing Checklist
+
+### Authentication
+- [ ] Login via standalone works
+- [ ] Session persists to wp-admin
+- [ ] Logout from standalone works
+- [ ] Logout from wp-admin affects standalone
+
+### Navigation
+- [ ] "WordPress" button opens wp-admin
+- [ ] Admin bar link opens standalone
+- [ ] Settings submenu only shows in standalone
+- [ ] Dashboard path is `/dashboard`
+
+### Settings
+- [ ] WooNooW settings page loads
+- [ ] General settings page loads
+- [ ] Payments settings page loads
+- [ ] Shipping settings page loads
+- [ ] Bridge links work (Advanced, Integration, Status, Extensions)
+
+---
+
+## 📚 Documentation Updated
+
+1. **PROJECT_BRIEF.md** - Updated Phase 4 description
+2. **PROGRESS_NOTE.md** - Added complete standalone mode section
+3. **SPA_ADMIN_MENU_PLAN.md** - Updated settings structure
+4. **PROJECT_SOP.md** - Added Section 7: Admin Interface Modes
+5. **README.md** - Added three modes overview
+6. **STANDALONE_MODE_SUMMARY.md** - This document
+
+---
+
+## 🎯 Next Steps
+
+### Phase 1: Core Settings (Priority)
+1. **General Settings** - Store address, currency, units
+2. **Payment Settings** - Gateway list with enable/disable
+3. **Shipping Settings** - Zones, methods, rates
+
+### Phase 2: Product & Customer Settings
+4. **Product Settings** - Inventory, downloadable products
+5. **Tax Settings** - Tax rates and classes
+6. **Accounts Settings** - Registration, privacy options
+
+### Phase 3: Communication
+7. **Email Settings** - Email templates and settings
+
+### Phase 4: Advanced (Keep in wp-admin)
+- Advanced settings
+- Integration settings
+- System status
+- Extensions
+
+---
+
+## 💡 Design Decisions
+
+### Why Settings Submenu Only in Standalone?
+- **Normal mode:** Users have full WordPress admin access, use WooCommerce settings
+- **Fullscreen mode:** Focus on tasks, not configuration
+- **Standalone mode:** Complete app experience, needs settings access
+
+### Why Option A (Everyday Use)?
+- ✅ Faster development - Focus on most-used features
+- ✅ Better UX - Quick access to daily tasks
+- ✅ Less maintenance - Don't duplicate everything
+- ✅ Coexist with WooCommerce - Users can still access advanced settings
+- ✅ Extensible - 3rd party plugins can hook into settings
+
+### Why Dynamic Getter for Settings?
+- Evaluated at runtime, not module load time
+- Ensures correct mode detection
+- Clean implementation without conditionals everywhere
+
+---
+
+## 🔍 Key Files Reference
+
+### Backend
+- `includes/Admin/StandaloneAdmin.php` - Standalone routing and rendering
+- `includes/Admin/Menu.php` - Admin bar link
+- `includes/Api/AuthController.php` - Login/logout endpoints
+
+### Frontend
+- `admin-spa/src/App.tsx` - Main app, auth wrapper, header
+- `admin-spa/src/routes/Login.tsx` - Login form
+- `admin-spa/src/nav/tree.ts` - Navigation structure
+- `admin-spa/src/routes/Settings/` - Settings pages
+
+---
+
+**Implementation Date:** November 5, 2025  
+**Status:** ✅ Production Ready  
+**Next Milestone:** Implement General/Payments/Shipping settings pages