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

components/ui/toaster.tsx

@@ -1,4 +1,4 @@
-"use client"
+"use client";
 
 import {
   Toast,
@@ -7,29 +7,25 @@ import {
   ToastProvider,
   ToastTitle,
   ToastViewport,
-} from "@/components/ui/toast"
-import { useToast } from "@/hooks/use-toast"
+} from "@/components/ui/toast";
+import { useToast } from "@/hooks/use-toast";
 
 export function Toaster() {
-  const { toasts } = useToast()
+  const { toasts } = useToast();
 
   return (
     <ToastProvider>
-      {toasts.map(function ({ id, title, description, action, ...props }) {
-        return (
-          <Toast key={id} {...props}>
-            <div className="grid gap-1">
-              {title && <ToastTitle>{title}</ToastTitle>}
-              {description && (
-                <ToastDescription>{description}</ToastDescription>
-              )}
-            </div>
-            {action}
-            <ToastClose />
-          </Toast>
-        )
-      })}
+      {toasts.map(({ id, title, description, action, ...props }) => (
+        <Toast key={id} {...props}>
+          <div className="grid gap-1">
+            {title && <ToastTitle>{title}</ToastTitle>}
+            {description && <ToastDescription>{description}</ToastDescription>}
+          </div>
+          {action}
+          <ToastClose />
+        </Toast>
+      ))}
       <ToastViewport />
     </ToastProvider>
-  )
-}
+  );
+}