Fix all ESLint errors: remove unused imports, replace any types

- Remove ~60 unused imports and variables across 88 files
- Replace ~80 `any` type annotations with proper types (unknown,
  Record<string, unknown>, or specific types)
- Prefix unused callback args with underscore
- Fix unescaped JSX entities
- Lint now passes cleanly (0 errors, 2 intentional img warnings)

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

src/lib/services/portal.service.ts

@@ -3,7 +3,7 @@ import { and, eq, count } from 'drizzle-orm';
 import { db } from '@/lib/db';
 import { clients, clientContacts } from '@/lib/db/schema/clients';
 import { interests } from '@/lib/db/schema/interests';
-import { documents, documentSigners, files } from '@/lib/db/schema/documents';
+import { documents, files } from '@/lib/db/schema/documents';
 import { invoices } from '@/lib/db/schema/financial';
 import { berths } from '@/lib/db/schema/berths';
 import { ports } from '@/lib/db/schema/ports';