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/interests/recommendation-list.tsx

@@ -1,8 +1,7 @@
 'use client';
 
-import { useState } from 'react';
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
-import { Sparkles, Link, Loader2 } from 'lucide-react';
+import { Sparkles, Loader2 } from 'lucide-react';
 
 import { Button } from '@/components/ui/button';
 import { Badge } from '@/components/ui/badge';
@@ -75,7 +74,7 @@ export function RecommendationList({ interestId }: RecommendationListProps) {
         </div>
       ) : recommendations.length === 0 ? (
         <div className="text-center py-12 text-muted-foreground">
-          <p>No recommendations yet. Click "Generate Recommendations" to get started.</p>
+          <p>No recommendations yet. Click &quot;Generate Recommendations&quot; to get started.</p>
         </div>
       ) : (
         <div className="space-y-2">