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/pipeline-card.tsx

@@ -55,7 +55,7 @@ export function PipelineCard({
 
       <div className="flex items-center justify-between gap-2">
         {leadCategory && (
-          <Badge variant={(LEAD_CATEGORY_COLORS[leadCategory] as any) ?? 'secondary'}>
+          <Badge variant={(LEAD_CATEGORY_COLORS[leadCategory] as 'default' | 'secondary' | 'destructive' | 'outline') ?? 'secondary'}>
             {leadCategory.replace(/_/g, ' ')}
           </Badge>
         )}