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/expenses/expense-detail.tsx

@@ -8,16 +8,6 @@ import { Loader2, Receipt, Edit, Archive } from 'lucide-react';
 import { Button } from '@/components/ui/button';
 import { Badge } from '@/components/ui/badge';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
-import { Label } from '@/components/ui/label';
-import { Input } from '@/components/ui/input';
-import { Textarea } from '@/components/ui/textarea';
-import {
-  Select,
-  SelectContent,
-  SelectItem,
-  SelectTrigger,
-  SelectValue,
-} from '@/components/ui/select';
 import { ArchiveConfirmDialog } from '@/components/shared/archive-confirm-dialog';
 import { apiFetch } from '@/lib/api/client';
 import type { ExpenseRow } from './expense-columns';