production: reminder cron, dashboard overhaul, shadcn components, setup wizard

- /api/cron/reminders: processes pending reminders every 15min, sends WhatsApp with email fallback
- /api/cron/overdue: marks overdue pledges daily (7d deferred, 14d immediate)
- /api/pledges: GET handler with filtering, search, pagination, sort by dueDate
- Dashboard overview: stats, collection progress bar, needs attention, upcoming payments
- Dashboard pledges: proper table with status tabs, search, actions, pagination
- New shadcn components: Table, Tabs, DropdownMenu, Progress
- Setup wizard: 4-step onboarding (org → bank → event → QR code)
- Settings API: PUT handler for org create/update
- Org resolver: single-tenant fallback to first org
- Cron jobs installed: reminders every 15min, overdue check at 6am
- Auto-generates installment dates when not provided
- HOSTNAME=0.0.0.0 in compose for multi-network binding

package.json

@@ -4,9 +4,12 @@
   "type": "module",
   "description": "Pi Coding Agent extension playground",
   "dependencies": {
+    "@anthropic-ai/sdk": "^0.78.0",
+    "better-sqlite3": "^12.6.2",
     "yaml": "^2.8.0"
   },
   "devDependencies": {
-    "@playwright/cli": "^0.1.1"
+    "@playwright/cli": "^0.1.1",
+    "@types/better-sqlite3": "^7.6.13"
   }
 }