Add financial export ZIP download for admin and accountant

- New /companies/[id]/export page with year selector and big download button
- GET /export/zip endpoint generates the financial-export-{name}-{year}.zip
  by calling buildFinancialExport, then logs financial_exported in
  the company audit trail
- New "Export" tab in company nav, visible to admin or accountant
- Page lists all included files and warns about sensitive PII

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/routes/(app)/companies/[companyId]/+layout.svelte

@@ -32,6 +32,9 @@
 					{ href: `/companies/${data.company.id}/integrations`, label: 'Integrations' }
 				]
 			: []),
+		...(data.companyRoles.includes('admin') || data.companyRoles.includes('accountant')
+			? [{ href: `/companies/${data.company.id}/export`, label: 'Export' }]
+			: []),
 		...(data.companyRoles.includes('admin') || data.companyRoles.includes('manager')
 			? [
 					{ href: `/companies/${data.company.id}/import`, label: 'Import' },

src/routes/(app)/companies/[companyId]/export/+page.server.ts

@@ -0,0 +1,8 @@
+import type { PageServerLoad } from './$types';
+import { requireCompanyRoleAny } from '$lib/server/authorization.js';
+
+export const load: PageServerLoad = async ({ locals, params, parent }) => {
+	await requireCompanyRoleAny(locals, params.companyId, ['admin', 'accountant']);
+	await parent();
+	return {};
+};

src/routes/(app)/companies/[companyId]/export/+page.svelte

@@ -0,0 +1,90 @@
+<script lang="ts">
+	import type { PageData } from './$types';
+
+	let { data } = $props<{ data: PageData }>();
+
+	let year = $state(new Date().getFullYear());
+
+	const downloadHref = $derived(
+		`/companies/${data.company.id}/export/zip?year=${year}`
+	);
+
+	const FILES = [
+		{ name: 'company.csv', desc: 'Company record (name, currency, total budget)' },
+		{ name: 'projects.csv', desc: 'All projects (active + inactive)' },
+		{ name: 'parties.csv', desc: 'Customers + suppliers (incl. archived)' },
+		{ name: 'employees.csv', desc: 'Employees (incl. terminated/archived)' },
+		{ name: 'budget_allocations.csv', desc: 'Fund movements during the year' },
+		{ name: 'expenses.csv', desc: 'All expenses dated in the year (any status)' },
+		{ name: 'invoices.csv', desc: 'Invoices issued in the year (all statuses)' },
+		{ name: 'invoice_line_items.csv', desc: 'Line items for those invoices' },
+		{ name: 'salary_history.csv', desc: 'Salary changes effective on/before year end' },
+		{ name: 'payslips.csv', desc: 'Payslips for the year (Thai SSO + WHT shown)' },
+		{ name: 'payslip_line_items.csv', desc: 'Line items for those payslips' },
+		{ name: 'packages.csv', desc: 'Packages created in the year (with customs links)' },
+		{ name: 'external_transactions.csv', desc: 'Bank/wallet transactions in the year' },
+		{ name: 'company_log.csv', desc: 'Full audit trail for the year' }
+	];
+</script>
+
+<svelte:head>
+	<title>Financial Export - {data.company.name}</title>
+</svelte:head>
+
+<div class="mx-auto max-w-3xl">
+	<h1 class="text-2xl font-bold text-gray-900 dark:text-white">Financial Export</h1>
+	<p class="mt-1 text-sm text-gray-500 dark:text-gray-400">
+		Download a complete year-scoped snapshot for internal review or tax filing.
+	</p>
+
+	<!-- Year + download -->
+	<div class="mt-6 rounded-lg border border-gray-200 bg-white p-6 dark:border-gray-700 dark:bg-gray-800">
+		<label for="year" class="mb-2 block text-sm font-medium text-gray-700 dark:text-gray-300">
+			Tax year
+		</label>
+		<div class="flex items-center gap-3">
+			<input
+				type="number"
+				id="year"
+				min="2000"
+				max={new Date().getFullYear() + 1}
+				bind:value={year}
+				class="w-32 rounded-md border border-gray-300 px-3 py-2 text-sm dark:border-gray-600 dark:bg-gray-700 dark:text-white"
+			/>
+			<a
+				href={downloadHref}
+				class="rounded-md bg-blue-600 px-5 py-2 text-sm font-medium text-white hover:bg-blue-700"
+			>
+				Download export ZIP
+			</a>
+		</div>
+		<p class="mt-2 text-xs text-gray-500 dark:text-gray-400">
+			ZIP filename: <code class="rounded bg-gray-100 px-1 dark:bg-gray-700">financial-export-{data.company.name.replace(/[^a-zA-Z0-9_-]+/g, '_')}-{year}.zip</code>
+		</p>
+	</div>
+
+	<!-- Contents -->
+	<div class="mt-6 rounded-lg border border-gray-200 bg-white p-6 dark:border-gray-700 dark:bg-gray-800">
+		<h2 class="font-semibold text-gray-900 dark:text-white">Contents</h2>
+		<ul class="mt-3 divide-y divide-gray-100 text-sm dark:divide-gray-700">
+			{#each FILES as f}
+				<li class="flex items-center justify-between gap-4 py-2">
+					<code class="text-gray-700 dark:text-gray-300">{f.name}</code>
+					<span class="text-xs text-gray-500 dark:text-gray-400">{f.desc}</span>
+				</li>
+			{/each}
+		</ul>
+	</div>
+
+	<!-- Notes -->
+	<div class="mt-4 rounded-md bg-amber-50 p-4 text-sm text-amber-800 dark:bg-amber-900/30 dark:text-amber-200">
+		<p class="font-medium">Sensitive data — handle with care</p>
+		<p class="mt-1">
+			This export contains <strong>full salaries, bank account numbers, national IDs, and tax IDs</strong>.
+			Store the ZIP securely and only share with parties (auditors, accountants) who require the data.
+		</p>
+		<p class="mt-1">
+			All generations are logged in the company audit trail.
+		</p>
+	</div>
+</div>

src/routes/(app)/companies/[companyId]/export/zip/+server.ts

@@ -0,0 +1,32 @@
+import { error } from '@sveltejs/kit';
+import type { RequestHandler } from './$types';
+import { requireCompanyRoleAny } from '$lib/server/authorization.js';
+import { logCompanyEvent } from '$lib/server/audit.js';
+import { buildFinancialExport } from '$lib/server/export/financial.js';
+
+export const GET: RequestHandler = async ({ locals, params, url }) => {
+	const { user } = await requireCompanyRoleAny(locals, params.companyId, ['admin', 'accountant']);
+
+	const yearParam = url.searchParams.get('year');
+	const year = yearParam ? parseInt(yearParam, 10) : new Date().getFullYear();
+	if (isNaN(year) || year < 2000 || year > 2100) {
+		error(400, 'Invalid year');
+	}
+
+	const { filename, bytes } = await buildFinancialExport(params.companyId, year);
+
+	await logCompanyEvent(
+		params.companyId,
+		user.id,
+		'financial_exported',
+		`Financial export generated for ${year}`,
+		{ year, sizeBytes: bytes.length }
+	);
+
+	return new Response(new Blob([bytes as BlobPart], { type: 'application/zip' }), {
+		headers: {
+			'Content-Type': 'application/zip',
+			'Content-Disposition': `attachment; filename="${filename}"`
+		}
+	});
+};