chore: clean Hero/Signup/Router imports; remove ArrowRight; deps reset; a11y on CTA

src/Routes/Router.tsx

@@ -1,4 +1,4 @@
-import { Navigate, Route, Routes } from "react-router-dom";
+import { Routes, Route } from "react-router-dom";
 import Tracker from "../pages/Tracker/Tracker.tsx";
 import About from "../pages/About/About";
 import Contact from "../pages/Contact/Contact";

src/components/Hero.tsx

@@ -1,4 +1,4 @@
-import { Search, ArrowRight } from 'lucide-react';
+import { Search } from 'lucide-react';
 import { Link } from 'react-router-dom';
 
 const Hero = () => {

src/pages/Signup/Signup.tsx

@@ -1,4 +1,4 @@
-import React, { useState, ChangeEvent, FormEvent } from "react";
+import React, { useState } from "react";
 import axios from "axios";
 import { useNavigate ,Link } from "react-router-dom";
 import { User, Mail, Lock } from "lucide-react";