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/components/berths/berth-detail.tsx

@@ -24,7 +24,7 @@ export function BerthDetail({ berthId }: BerthDetailProps) {
     'berth:statusChanged': [['berth', berthId]],
   });
 
-  const berth = data as any;
+  const berth = data as Record<string, unknown>;
 
   return (
     <DetailLayout