fix: On-hold and trash color conflict, add dashboard tweaks plan

## 1. Fix On-hold/Trash Color Conflict ✅

**Issue:** Both statuses used same gray color (#6b7280)

**Solution:**
- On-hold: `#64748b` (Slate 500 - lighter)
- Trash: `#475569` (Slate 600 - darker)

**Result:** Distinct visual identity for each status

---

## 2. Dashboard Tweaks Plan 📋

Created `DASHBOARD_TWEAKS_TODO.md` with:

**Pending Tasks:**
1. **No Data State for Charts**
   - Revenue chart (Dashboard → Revenue)
   - Orders chart (Dashboard → Orders)
   - Coupons chart (Dashboard → Coupons)
   - Show friendly message like Overview does

2. **VIP Customer Settings**
   - New page: `/settings/customers`
   - Configure VIP qualification criteria:
     - Minimum total spent
     - Minimum order count
     - Timeframe (all-time, 30/90/365 days)
     - Require both or either
     - Exclude refunded orders
   - VIP detection logic documented

---

## Notification Settings Structure ✅

**Recommendation:** Separate subpages (not tabs)

**Structure:**
```
/settings/notifications (overview)
├── /settings/notifications/events (What to notify)
├── /settings/notifications/channels (How to notify)
└── /settings/notifications/templates (Email/channel templates)
```

**Reasoning:**
- Cleaner navigation
- Better performance (load only needed)
- Easier maintenance
- Scalability
- Mobile-friendly

---

## Summary

✅ Color conflict fixed
📋 Dashboard tweaks documented
✅ Notification structure decided (subpages)

**Next Steps:**
1. Implement no-data states
2. Build VIP settings page
3. Implement notification system

includes/Api/AnalyticsController.php

@@ -371,13 +371,14 @@ class AnalyticsController {
 		// Format status distribution and calculate conversion rate
 		$formatted_status = [];
 		$status_colors = [
-			'wc-completed' => '#10b981',
-			'wc-processing' => '#3b82f6',
-			'wc-pending' => '#f59e0b',
-			'wc-on-hold' => '#6b7280',
-			'wc-cancelled' => '#ef4444',
-			'wc-refunded' => '#8b5cf6',
-			'wc-failed' => '#dc2626',
+			'wc-completed' => '#10b981',   // Green
+			'wc-processing' => '#3b82f6',  // Blue
+			'wc-pending' => '#f59e0b',     // Orange/Amber
+			'wc-on-hold' => '#64748b',     // Slate
+			'wc-cancelled' => '#ef4444',   // Red
+			'wc-refunded' => '#8b5cf6',    // Purple
+			'wc-failed' => '#dc2626',      // Dark Red
+			'wc-trash' => '#475569',       // Dark Slate
 		];
 		
 		$total_all_orders = 0;
@@ -996,17 +997,18 @@ class AnalyticsController {
 		
 		// Add color and percentage to status data - SORT BY IMPORTANCE
 		$status_colors = [
-			'completed' => '#10b981',
-			'processing' => '#3b82f6',
-			'pending' => '#f59e0b',
-			'cancelled' => '#ef4444',
-			'refunded' => '#8b5cf6',
-			'failed' => '#dc2626',
-			'on-hold' => '#6b7280',
+			'completed' => '#10b981',   // Green
+			'processing' => '#3b82f6',  // Blue
+			'pending' => '#f59e0b',     // Orange/Amber
+			'cancelled' => '#ef4444',   // Red
+			'refunded' => '#8b5cf6',    // Purple
+			'failed' => '#dc2626',      // Dark Red
+			'on-hold' => '#64748b',     // Slate (changed from gray)
+			'trash' => '#475569',       // Dark Slate (distinct from on-hold)
 		];
 		
 		// Define sort order (most important first)
-		$status_order = ['completed', 'processing', 'pending', 'on-hold', 'cancelled', 'refunded', 'failed'];
+		$status_order = ['completed', 'processing', 'pending', 'on-hold', 'cancelled', 'refunded', 'failed', 'trash'];
 		
 		foreach ($formatted_status as &$status) {
 			$status['color'] = $status_colors[$status['status']] ?? '#6b7280';