Add comprehensive recurring payments system with scheduling

- Add RecurringPayment model with flexible scheduling options
- Implement node-cron based scheduler for payment processing
- Create API endpoints for CRUD operations on recurring payments
- Add recurring payments management UI with create/edit forms
- Integrate scheduler initialization in hooks.server.ts
- Enhance payments/add form with progressive enhancement
- Add recurring payments button to main dashboard
- Improve server-side rendering for better performance

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

package.json

@@ -17,6 +17,7 @@
 		"@sveltejs/kit": "^2.37.0",
 		"@sveltejs/vite-plugin-svelte": "^6.1.3",
 		"@types/node": "^22.12.0",
+		"@types/node-cron": "^3.0.11",
 		"svelte": "^5.38.6",
 		"svelte-check": "^4.0.0",
 		"tslib": "^2.6.0",
@@ -28,6 +29,7 @@
 		"@sveltejs/adapter-node": "^5.0.0",
 		"cheerio": "1.0.0-rc.12",
 		"mongoose": "^8.0.0",
+		"node-cron": "^4.2.1",
 		"sharp": "^0.33.0"
 	}
 }