fix: resolve typescript build errors in main branch

Author: Ema

src/App.tsx

@@ -8,7 +8,6 @@ import { RocketTransition } from './components/RocketTransition';
 
 function App() {
   const location = useLocation();
-  const hideExploreLink = location.pathname === '/' || location.pathname === '/preferences';
   const isHomePage = location.pathname === '/';
 
   return (

src/components/OrbitSystem.tsx

@@ -91,7 +91,6 @@ export default function OrbitSystem() {
     }
   };
 
-  const visibleAliens = mockAliens.filter(a => activeIds.includes(a.id));
 
   return (
     <>

src/components/RocketTransition.tsx

@@ -1,4 +1,4 @@
-import React, { useEffect, useState } from 'react';
+import { useEffect, useState } from 'react';
 import { motion, AnimatePresence } from 'framer-motion';
 import { useNavigate } from 'react-router';
 import { useTransitionContext } from '../context/TransitionContext';

src/context/AppContext.tsx

@@ -1,4 +1,5 @@
-import { createContext, useState, ReactNode, useContext } from 'react';
+import { createContext, useState, useContext } from 'react';
+import type { ReactNode } from 'react';
 import type { AlienProfile } from '../data/mockAliens';
 
 export interface UserPreferences {

src/context/TransitionContext.tsx

@@ -1,5 +1,5 @@
-import React, { createContext, useContext, useState, ReactNode, useEffect } from 'react';
-import { useNavigate } from 'react-router';
+import { createContext, useContext, useState } from 'react';
+import type { ReactNode } from 'react';
 import { motion } from 'framer-motion';
 
 interface TransitionContextType {
@@ -12,7 +12,6 @@ interface TransitionContextType {
 
 export const TransitionContext = createContext<TransitionContextType | undefined>(undefined);
 
-const heartSvg = `data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><path d="M50,25 C50,25 25,0 0,25 C-25,50 25,90 50,100 C75,90 125,50 100,25 C75,0 50,25 50,25 Z" fill="black"/></svg>`;
 
 export const TransitionProvider = ({ children }: { children: ReactNode }) => {
   const [isLaunching, setIsLaunching] = useState(false);