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/components/shared/detail-layout.tsx

@@ -37,7 +37,8 @@ export function DetailLayout({
   function handleTabChange(tabId: string) {
     const params = new URLSearchParams(searchParams.toString());
     params.set('tab', tabId);
-    router.replace(`${pathname}?${params.toString()}`, { scroll: false });
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    router.replace(`${pathname}?${params.toString()}` as any, { scroll: false });
   }
 
   if (isLoading) {