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/expenses.ts

@@ -1,4 +1,5 @@
 import { eq, and, gte, lte, sql } from 'drizzle-orm';
+import type { PgColumn } from 'drizzle-orm/pg-core';
 
 import { db } from '@/lib/db';
 import { expenses, invoices, invoiceExpenses } from '@/lib/db/schema/financial';
@@ -58,7 +59,7 @@ export async function listExpenses(portId: string, query: ListExpensesInput) {
     includeArchived: query.includeArchived,
     archivedAtColumn: expenses.archivedAt,
     sort: query.sort
-      ? { column: expenses[query.sort as keyof typeof expenses] as unknown, direction: query.order }
+      ? { column: expenses[query.sort as keyof typeof expenses] as unknown as PgColumn, direction: query.order }
       : undefined,
   });
 }