docs: Audit and cleanup documentation

## Task 1: Translation Support Audit ✅
- Audited all settings pages for translation support
- Found 3 pages missing `__` function: Store, Payments, Developer
- Most pages already have proper i18n implementation
- Action: Add translation support in next iteration

## Task 2: Documentation Cleanup ✅

### Created
- DOCS_AUDIT_REPORT.md - Comprehensive audit of 36 MD files
- TASKS_SUMMARY.md - Current tasks and progress tracking

### Deleted (12 obsolete docs)
Removed completed/superseded documentation:
- CUSTOMER_SETTINGS_404_FIX.md - Bug fixed
- MENU_FIX_SUMMARY.md - Menu implemented
- DASHBOARD_TWEAKS_TODO.md - Dashboard complete
- DASHBOARD_PLAN.md - Dashboard implemented
- SPA_ADMIN_MENU_PLAN.md - Menu implemented
- STANDALONE_ADMIN_SETUP.md - Standalone complete
- STANDALONE_MODE_SUMMARY.md - Duplicate doc
- SETTINGS_PAGES_PLAN.md - Superseded by V2
- SETTINGS_PAGES_PLAN_V2.md - Settings implemented
- SETTINGS_TREE_PLAN.md - Navigation implemented
- SETTINGS_PLACEMENT_STRATEGY.md - Strategy finalized
- TAX_NOTIFICATIONS_PLAN.md - Merged into notification strategy

### Result
- **Before:** 36 documents
- **After:** 24 documents
- **Reduction:** 33% fewer docs
- **Benefit:** Clearer focus, easier navigation

### Remaining Docs
- 15 essential docs (core architecture, guides)
- 9 docs to consolidate later (low priority)

## Task 3: Notification System - Ready
- Read NOTIFICATION_STRATEGY.md
- Created implementation plan in TASKS_SUMMARY.md
- Ready to start Phase 1 implementation

---

**Next:** Implement notification core framework

TASKS_SUMMARY.md

@@ -0,0 +1,130 @@
+# Tasks Summary - November 11, 2025
+
+## ✅ Task 1: Translation Support Audit
+
+### Status: COMPLETED ✓
+
+**Findings:**
+- Most settings pages already have `__` translation function imported
+- **Missing translation support:**
+  - `Store.tsx` - Needs `__` import and string wrapping
+  - `Payments.tsx` - Needs `__` import and string wrapping  
+  - `Developer.tsx` - Needs `__` import and string wrapping
+
+**Action Required:**
+Add translation support to these 3 files (can be done during next iteration)
+
+---
+
+## ✅ Task 2: Documentation Audit
+
+### Status: COMPLETED ✓
+
+**Actions Taken:**
+1. ✅ Created `DOCS_AUDIT_REPORT.md` - Comprehensive audit of all 36 MD files
+2. ✅ Deleted 12 obsolete documents:
+   - CUSTOMER_SETTINGS_404_FIX.md
+   - MENU_FIX_SUMMARY.md
+   - DASHBOARD_TWEAKS_TODO.md
+   - DASHBOARD_PLAN.md
+   - SPA_ADMIN_MENU_PLAN.md
+   - STANDALONE_ADMIN_SETUP.md
+   - STANDALONE_MODE_SUMMARY.md
+   - SETTINGS_PAGES_PLAN.md
+   - SETTINGS_PAGES_PLAN_V2.md
+   - SETTINGS_TREE_PLAN.md
+   - SETTINGS_PLACEMENT_STRATEGY.md
+   - TAX_NOTIFICATIONS_PLAN.md
+
+**Result:**
+- Reduced from 36 to 24 documents (33% reduction)
+- Clearer focus on active development
+- Easier navigation for developers
+
+**Remaining Documents:**
+- 15 essential docs (keep as-is)
+- 9 docs to consolidate later (low priority)
+
+---
+
+## 🚧 Task 3: Notification Settings Implementation
+
+### Status: IN PROGRESS
+
+**Plan:** Follow NOTIFICATION_STRATEGY.md
+
+### Phase 1: Core Framework (Current)
+1. **Backend (PHP)**
+   - [ ] Create `NotificationManager` class
+   - [ ] Create `EmailChannel` class (built-in)
+   - [ ] Create notification events registry
+   - [ ] Create REST API endpoints
+   - [ ] Add hooks for addon integration
+
+2. **Frontend (React)**
+   - [ ] Update `Notifications.tsx` settings page
+   - [ ] Create channel cards UI
+   - [ ] Create event configuration UI
+   - [ ] Add channel toggle/enable functionality
+   - [ ] Add template editor (email)
+
+3. **Database**
+   - [ ] Notification events table (optional)
+   - [ ] Use wp_options for settings
+   - [ ] Channel configurations
+
+### Implementation Steps
+
+#### Step 1: Backend Core
+```
+includes/Core/Notifications/
+├── NotificationManager.php      # Main manager
+├── NotificationEvent.php        # Event class
+├── Channels/
+│   └── EmailChannel.php         # Built-in email
+└── NotificationSettingsProvider.php  # Settings CRUD
+```
+
+#### Step 2: REST API
+```
+includes/Api/NotificationsController.php
+- GET /notifications/channels    # List available channels
+- GET /notifications/events      # List notification events
+- GET /notifications/settings    # Get all settings
+- POST /notifications/settings   # Save settings
+```
+
+#### Step 3: Frontend UI
+```
+admin-spa/src/routes/Settings/Notifications.tsx
+- Channel cards (email + addon channels)
+- Event configuration per category
+- Toggle channels per event
+- Recipient selection (admin/customer/both)
+```
+
+### Key Features
+- ✅ Email channel built-in
+- ✅ Addon integration via hooks
+- ✅ Per-event channel selection
+- ✅ Recipient targeting
+- ✅ Template system ready
+
+---
+
+## Next Actions
+
+### Immediate
+1. ✅ Commit documentation cleanup
+2. 🚧 Start notification system implementation
+3. ⏳ Add translation to Store/Payments/Developer pages
+
+### This Session
+- Implement notification core framework
+- Create REST API endpoints
+- Build basic UI for notification settings
+
+### Future
+- Build Telegram addon as proof of concept
+- Create addon development template
+- Document notification addon API