Refactor: Implement complete type safety plan

src/lib/errorHandler.ts

@@ -61,3 +61,16 @@ export const handleInfo = (
     duration: 4000
   });
 };
+
+/**
+ * Type-safe error message extraction utility
+ * Use this instead of `error: any` in catch blocks
+ */
+export const getErrorMessage = (error: unknown): string => {
+  if (error instanceof Error) return error.message;
+  if (typeof error === 'string') return error;
+  if (error && typeof error === 'object' && 'message' in error) {
+    return String(error.message);
+  }
+  return 'An unexpected error occurred';
+};