📝 docs: Add documentation

docs/admin/logs/commission.md

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+<div v-pre>
+
+# Commission Log
+
+View user referral commission records including commission sources and amounts.
+
+## Table Column Description
+
+### User
+User receiving commission (clickable for details).
+
+### Amount
+Commission amount.
+
+### Order No.
+Order that generated commission (clickable for order details).
+
+### Type
+Commission type (displayed as Badge):
+- Referral commission
+- Cashback commission
+- Reward commission
+- Other types
+
+### Time
+Commission issued time.
+
+## Filter Functions
+
+### Date Filter
+Select date to view commission records, defaults to today.
+
+### User ID Filter
+Input user ID to view that user's commission records.
+
+## Usage Scenarios
+
+### Scenario 1: View Today's Commissions
+
+1. Shows today's commission records by default
+2. Calculate total commission amount
+3. Analyze referral effectiveness
+
+### Scenario 2: Track User Commissions
+
+**View Referral Earnings**:
+1. Filter by user ID
+2. View all commission records
+3. Calculate cumulative earnings
+4. Verify commission accuracy
+
+### Scenario 3: Analyze Referral Performance
+
+**Calculate Referral Data**:
+1. Select time range
+2. View commission records
+3. Identify top referrers
+4. Optimize referral strategy
+
+## Commission Rules
+
+### Commission Sources
+- **Referral Commission**: Generated from referred user purchases
+- **Cashback Commission**: Cashback from own purchases
+- **Reward Commission**: Activity rewards
+
+### Commission Calculation
+- Percentage of order amount
+- Real-time or periodic settlement
+- Linked to original order
+
+## Important Notes
+
+1. **Log Retention**: Retention per system config
+2. **Order Association**: Can trace commission source
+3. **Type Recognition**: Quick categorization by type
+4. **Real-time Stats**: View referral effectiveness
+5. **Regular Reconciliation**: Verify commission issuance accuracy
+
+</div>