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-list.tsx

@@ -58,7 +58,7 @@ export function BerthList() {
             entityType="berths"
             currentFilters={filters}
             currentSort={sort}
-            onApplyView={(savedFilters, savedSort) => {
+            onApplyView={(savedFilters, _savedSort) => {
               clearFilters();
               Object.entries(savedFilters).forEach(([key, value]) => setFilter(key, value));
             }}