feat: comprehensive Biome linting fixes and code quality improvements

Major code quality overhaul addressing 58% of all linting issues:

• Type Safety Improvements:
  - Replace all any types with proper TypeScript interfaces
  - Fix Map component shadowing (renamed to CountryMap)
  - Add comprehensive custom error classes system
  - Enhance API route type safety

• Accessibility Enhancements:
  - Add explicit button types to all interactive elements
  - Implement useId() hooks for form element accessibility
  - Add SVG title attributes for screen readers
  - Fix static element interactions with keyboard handlers

• React Best Practices:
  - Resolve exhaustive dependencies warnings with useCallback
  - Extract nested component definitions to top level
  - Fix array index keys with proper unique identifiers
  - Improve component organization and prop typing

• Code Organization:
  - Automatic import organization and type import optimization
  - Fix unused function parameters and variables
  - Enhanced error handling with structured error responses
  - Improve component reusability and maintainability

Results: 248 → 104 total issues (58% reduction)
- Fixed all critical type safety and security issues
- Enhanced accessibility compliance significantly
- Improved code maintainability and performance

pnpm-lock.yaml

@@ -237,6 +237,9 @@ importers:
       eslint-plugin-prettier:
         specifier: ^5.5.1
         version: 5.5.1(eslint@9.30.0(jiti@2.4.2))(prettier@3.6.2)
+      eslint-plugin-react-hooks:
+        specifier: ^5.2.0
+        version: 5.2.0(eslint@9.30.0(jiti@2.4.2))
       jest-axe:
         specifier: ^10.0.0
         version: 10.0.0