Refactor authentication components and enhance user session handling

- Updated AccountPopover to utilize session data for user information display.
- Modified ApplicationLayout to fetch user details from the database using Prisma.
- Replaced Checkbox components with native input elements in SignUpForm for better accessibility.
- Enhanced seed script to include default islands and create related data in the database.

components/auth/signup-form.tsx

@@ -20,7 +20,6 @@ import {
 	SelectTrigger,
 	SelectValue,
 } from "@/components/ui/select";
-import { Checkbox } from "../ui/checkbox";
 
 type AtollWithIslands = Prisma.AtollGetPayload<{
 	include: {
@@ -241,7 +240,8 @@ export default function SignUpForm({ atolls }: { atolls: AtollWithIslands[] }) {
 				)}
 				<div className="flex flex-col gap-2 items-start justify-start py-2">
 					<div className="flex gap-2 items-center">
-						<Checkbox
+						<input
+							type="checkbox"
 							defaultChecked={(actionState.payload?.get("terms") || "") as string === 'on'}
 							name="terms" id="terms" />
 						<label
@@ -263,7 +263,9 @@ export default function SignUpForm({ atolls }: { atolls: AtollWithIslands[] }) {
 					)}
 					<div className="flex gap-2 items-center">
 
-						<Checkbox
+						<input
+							type="checkbox"
+							defaultChecked={(actionState.payload?.get("policy") || "") as string === 'on'}
 							name="policy" id="terms" />
 						<label
 							htmlFor="terms"