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

lib/auth.ts

@@ -1,7 +1,7 @@
-import { NextAuthOptions } from "next-auth";
+import bcrypt from "bcryptjs";
+import type { NextAuthOptions } from "next-auth";
 import CredentialsProvider from "next-auth/providers/credentials";
 import { prisma } from "./prisma";
-import bcrypt from "bcryptjs";
 
 // Define the shape of the JWT token
 declare module "next-auth/jwt" {
@@ -114,4 +114,4 @@ export const authOptions: NextAuthOptions = {
   },
   secret: process.env.NEXTAUTH_SECRET,
   debug: process.env.NODE_ENV === "development",
-};
+};