feat: commission tracking based on wallet balances with payment history

- Commission = 5% of total wallet balances (not sales)
- Track commission payments in commission_payments table (migration 007)
- Show 'Due Now' = current commission - last payment amount
- Record payment form with amount and optional note
- Payment history table with date, balances, commission, paid, delta
- Delta shows difference between consecutive payments (new users = more owed)
- Seed phrase unlock reminder shows the commission due amount
- Stat warning highlight when commission is due

src/migrations/007_commission_payments.js

@@ -0,0 +1,17 @@
+import logger from '../utils/logger.js';
+
+export default async function migration007(db) {
+    await db.runAsync(`
+        CREATE TABLE IF NOT EXISTS commission_payments (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            total_balance_usd REAL NOT NULL,
+            commission_rate REAL NOT NULL,
+            commission_amount_usd REAL NOT NULL,
+            paid_amount_usd REAL NOT NULL,
+            wallet_count INTEGER NOT NULL,
+            note TEXT,
+            created_at DATETIME DEFAULT CURRENT_TIMESTAMP
+        )
+    `);
+    logger.info('Migration 007: commission_payments table created');
+}

src/migrations/runner.js

@@ -41,6 +41,7 @@ export async function runMigrations() {
     (await import('./004_user_states.js')).default,
     (await import('./005_audit_log.js')).default,
     (await import('./006_subcategories.js')).default,
+    (await import('./007_commission_payments.js')).default,
   ];
 
   for (let i = currentVersion; i < migrations.length; i++) {