Fix all TypeScript errors: restore proper types and typed route casts

- Restore `as any` casts for Next.js typedRoutes on dynamic routes
- Use proper types for PDF templates, invoice/expense data, DB schema
- Fix PgColumn casts in sort helpers for expenses/invoices
- Add null guards for optional port/client in record-export
- Fix vitest config (remove invalid poolOptions)
- Lint: 0 errors, TypeScript: 0 errors

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

src/lib/services/invoices.ts

@@ -1,4 +1,5 @@
 import { eq, and, desc, like, lt, sql, gte, lte, inArray, ne } from 'drizzle-orm';
+import type { PgColumn } from 'drizzle-orm/pg-core';
 
 import { db } from '@/lib/db';
 import {
@@ -96,7 +97,7 @@ export async function listInvoices(portId: string, query: ListInvoicesInput) {
     archivedAtColumn: invoices.archivedAt,
     sort: query.sort
       ? {
-          column: invoices[query.sort as keyof typeof invoices] as unknown,
+          column: invoices[query.sort as keyof typeof invoices] as unknown as PgColumn,
           direction: query.order,
         }
       : undefined,
@@ -465,7 +466,7 @@ export async function generateInvoicePdf(
     .where(eq(ports.id, portId))
     .limit(1);
 
-  const inputs = buildInvoiceInputs(invoice, invoice.lineItems, port);
+  const inputs = buildInvoiceInputs(invoice, invoice.lineItems, port ?? {});
 
   const pdfBytes = await generatePdf(invoiceTemplate, [inputs]);