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/document-templates.ts

@@ -2,6 +2,7 @@ import { and, eq } from 'drizzle-orm';
 
 import { db } from '@/lib/db';
 import { documentTemplates, documents, files } from '@/lib/db/schema/documents';
+import type { File as DbFile, Document as DbDocument } from '@/lib/db/schema/documents';
 import { clients, clientContacts } from '@/lib/db/schema/clients';
 import { interests } from '@/lib/db/schema/interests';
 import { berths } from '@/lib/db/schema/berths';
@@ -562,7 +563,7 @@ export async function generateAndSign(
     portId,
     context,
     meta,
-  );
+  ) as { document: DbDocument; file: DbFile };
   const template = await getTemplateById(templateId, portId);
 
   // Fetch PDF bytes from MinIO to send to Documenso