Add initial setup for React and Vite application

- Created essential files including `package.json`, `vite.config.js`, and `index.html`.
- Added ESLint configuration for code quality.
- Included basic styles in `App.css` and `index.css`.
- Implemented main application component in `App.jsx` with a counter feature.
- Added necessary assets such as logos and icons.
- Established a `.gitignore` file to exclude unnecessary files.

web/src/App.css

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+.counter {
+  font-size: 16px;
+  padding: 5px 10px;
+  border-radius: 5px;
+  color: var(--accent);
+  background: var(--accent-bg);
+  border: 2px solid transparent;
+  transition: border-color 0.3s;
+  margin-bottom: 24px;
+
+  &:hover {
+    border-color: var(--accent-border);
+  }
+  &:focus-visible {
+    outline: 2px solid var(--accent);
+    outline-offset: 2px;
+  }
+}
+
+.hero {
+  position: relative;
+
+  .base,
+  .framework,
+  .vite {
+    inset-inline: 0;
+    margin: 0 auto;
+  }
+
+  .base {
+    width: 170px;
+    position: relative;
+    z-index: 0;
+  }
+
+  .framework,
+  .vite {
+    position: absolute;
+  }
+
+  .framework {
+    z-index: 1;
+    top: 34px;
+    height: 28px;
+    transform: perspective(2000px) rotateZ(300deg) rotateX(44deg) rotateY(39deg)
+      scale(1.4);
+  }
+
+  .vite {
+    z-index: 0;
+    top: 107px;
+    height: 26px;
+    width: auto;
+    transform: perspective(2000px) rotateZ(300deg) rotateX(40deg) rotateY(39deg)
+      scale(0.8);
+  }
+}
+
+#center {
+  display: flex;
+  flex-direction: column;
+  gap: 25px;
+  place-content: center;
+  place-items: center;
+  flex-grow: 1;
+
+  @media (max-width: 1024px) {
+    padding: 32px 20px 24px;
+    gap: 18px;
+  }
+}
+
+#next-steps {
+  display: flex;
+  border-top: 1px solid var(--border);
+  text-align: left;
+
+  & > div {
+    flex: 1 1 0;
+    padding: 32px;
+    @media (max-width: 1024px) {
+      padding: 24px 20px;
+    }
+  }
+
+  .icon {
+    margin-bottom: 16px;
+    width: 22px;
+    height: 22px;
+  }
+
+  @media (max-width: 1024px) {
+    flex-direction: column;
+    text-align: center;
+  }
+}
+
+#docs {
+  border-right: 1px solid var(--border);
+
+  @media (max-width: 1024px) {
+    border-right: none;
+    border-bottom: 1px solid var(--border);
+  }
+}
+
+#next-steps ul {
+  list-style: none;
+  padding: 0;
+  display: flex;
+  gap: 8px;
+  margin: 32px 0 0;
+
+  .logo {
+    height: 18px;
+  }
+
+  a {
+    color: var(--text-h);
+    font-size: 16px;
+    border-radius: 6px;
+    background: var(--social-bg);
+    display: flex;
+    padding: 6px 12px;
+    align-items: center;
+    gap: 8px;
+    text-decoration: none;
+    transition: box-shadow 0.3s;
+
+    &:hover {
+      box-shadow: var(--shadow);
+    }
+    .button-icon {
+      height: 18px;
+      width: 18px;
+    }
+  }
+
+  @media (max-width: 1024px) {
+    margin-top: 20px;
+    flex-wrap: wrap;
+    justify-content: center;
+
+    li {
+      flex: 1 1 calc(50% - 8px);
+    }
+
+    a {
+      width: 100%;
+      justify-content: center;
+      box-sizing: border-box;
+    }
+  }
+}
+
+#spacer {
+  height: 88px;
+  border-top: 1px solid var(--border);
+  @media (max-width: 1024px) {
+    height: 48px;
+  }
+}
+
+.ticks {
+  position: relative;
+  width: 100%;
+
+  &::before,
+  &::after {
+    content: '';
+    position: absolute;
+    top: -4.5px;
+    border: 5px solid transparent;
+  }
+
+  &::before {
+    left: 0;
+    border-left-color: var(--border);
+  }
+  &::after {
+    right: 0;
+    border-right-color: var(--border);
+  }
+}

web/src/App.jsx

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+import { useState } from 'react'
+import reactLogo from './assets/react.svg'
+import viteLogo from './assets/vite.svg'
+import heroImg from './assets/hero.png'
+import './App.css'
+
+function App() {
+  const [count, setCount] = useState(0)
+
+  return (
+    <>
+      <section id="center">
+        <div className="hero">
+          <img src={heroImg} className="base" width="170" height="179" alt="" />
+          <img src={reactLogo} className="framework" alt="React logo" />
+          <img src={viteLogo} className="vite" alt="Vite logo" />
+        </div>
+        <div>
+          <h1>Get started</h1>
+          <p>
+            Edit <code>src/App.jsx</code> and save to test <code>HMR</code>
+          </p>
+        </div>
+        <button
+          className="counter"
+          onClick={() => setCount((count) => count + 1)}
+        >
+          Count is {count}
+        </button>
+      </section>
+
+      <div className="ticks"></div>
+
+      <section id="next-steps">
+        <div id="docs">
+          <svg className="icon" role="presentation" aria-hidden="true">
+            <use href="/icons.svg#documentation-icon"></use>
+          </svg>
+          <h2>Documentation</h2>
+          <p>Your questions, answered</p>
+          <ul>
+            <li>
+              <a href="https://vite.dev/" target="_blank">
+                <img className="logo" src={viteLogo} alt="" />
+                Explore Vite
+              </a>
+            </li>
+            <li>
+              <a href="https://react.dev/" target="_blank">
+                <img className="button-icon" src={reactLogo} alt="" />
+                Learn more
+              </a>
+            </li>
+          </ul>
+        </div>
+        <div id="social">
+          <svg className="icon" role="presentation" aria-hidden="true">
+            <use href="/icons.svg#social-icon"></use>
+          </svg>
+          <h2>Connect with us</h2>
+          <p>Join the Vite community</p>
+          <ul>
+            <li>
+              <a href="https://github.com/vitejs/vite" target="_blank">
+                <svg
+                  className="button-icon"
+                  role="presentation"
+                  aria-hidden="true"
+                >
+                  <use href="/icons.svg#github-icon"></use>
+                </svg>
+                GitHub
+              </a>
+            </li>
+            <li>
+              <a href="https://chat.vite.dev/" target="_blank">
+                <svg
+                  className="button-icon"
+                  role="presentation"
+                  aria-hidden="true"
+                >
+                  <use href="/icons.svg#discord-icon"></use>
+                </svg>
+                Discord
+              </a>
+            </li>
+            <li>
+              <a href="https://x.com/vite_js" target="_blank">
+                <svg
+                  className="button-icon"
+                  role="presentation"
+                  aria-hidden="true"
+                >
+                  <use href="/icons.svg#x-icon"></use>
+                </svg>
+                X.com
+              </a>
+            </li>
+            <li>
+              <a href="https://bsky.app/profile/vite.dev" target="_blank">
+                <svg
+                  className="button-icon"
+                  role="presentation"
+                  aria-hidden="true"
+                >
+                  <use href="/icons.svg#bluesky-icon"></use>
+                </svg>
+                Bluesky
+              </a>
+            </li>
+          </ul>
+        </div>
+      </section>
+
+      <div className="ticks"></div>
+      <section id="spacer"></section>
+    </>
+  )
+}
+
+export default App

web/src/assets/react.svg

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web/src/index.css

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+:root {
+  --text: #6b6375;
+  --text-h: #08060d;
+  --bg: #fff;
+  --border: #e5e4e7;
+  --code-bg: #f4f3ec;
+  --accent: #aa3bff;
+  --accent-bg: rgba(170, 59, 255, 0.1);
+  --accent-border: rgba(170, 59, 255, 0.5);
+  --social-bg: rgba(244, 243, 236, 0.5);
+  --shadow:
+    rgba(0, 0, 0, 0.1) 0 10px 15px -3px, rgba(0, 0, 0, 0.05) 0 4px 6px -2px;
+
+  --sans: system-ui, 'Segoe UI', Roboto, sans-serif;
+  --heading: system-ui, 'Segoe UI', Roboto, sans-serif;
+  --mono: ui-monospace, Consolas, monospace;
+
+  font: 18px/145% var(--sans);
+  letter-spacing: 0.18px;
+  color-scheme: light dark;
+  color: var(--text);
+  background: var(--bg);
+  font-synthesis: none;
+  text-rendering: optimizeLegibility;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+
+  @media (max-width: 1024px) {
+    font-size: 16px;
+  }
+}
+
+@media (prefers-color-scheme: dark) {
+  :root {
+    --text: #9ca3af;
+    --text-h: #f3f4f6;
+    --bg: #16171d;
+    --border: #2e303a;
+    --code-bg: #1f2028;
+    --accent: #c084fc;
+    --accent-bg: rgba(192, 132, 252, 0.15);
+    --accent-border: rgba(192, 132, 252, 0.5);
+    --social-bg: rgba(47, 48, 58, 0.5);
+    --shadow:
+      rgba(0, 0, 0, 0.4) 0 10px 15px -3px, rgba(0, 0, 0, 0.25) 0 4px 6px -2px;
+  }
+
+  #social .button-icon {
+    filter: invert(1) brightness(2);
+  }
+}
+
+body {
+  margin: 0;
+}
+
+#root {
+  width: 1126px;
+  max-width: 100%;
+  margin: 0 auto;
+  text-align: center;
+  border-inline: 1px solid var(--border);
+  min-height: 100svh;
+  display: flex;
+  flex-direction: column;
+  box-sizing: border-box;
+}
+
+h1,
+h2 {
+  font-family: var(--heading);
+  font-weight: 500;
+  color: var(--text-h);
+}
+
+h1 {
+  font-size: 56px;
+  letter-spacing: -1.68px;
+  margin: 32px 0;
+  @media (max-width: 1024px) {
+    font-size: 36px;
+    margin: 20px 0;
+  }
+}
+h2 {
+  font-size: 24px;
+  line-height: 118%;
+  letter-spacing: -0.24px;
+  margin: 0 0 8px;
+  @media (max-width: 1024px) {
+    font-size: 20px;
+  }
+}
+p {
+  margin: 0;
+}
+
+code,
+.counter {
+  font-family: var(--mono);
+  display: inline-flex;
+  border-radius: 4px;
+  color: var(--text-h);
+}
+
+code {
+  font-size: 15px;
+  line-height: 135%;
+  padding: 4px 8px;
+  background: var(--code-bg);
+}

web/src/main.jsx

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+import { StrictMode } from 'react'
+import { createRoot } from 'react-dom/client'
+import './index.css'
+import App from './App.jsx'
+
+createRoot(document.getElementById('root')).render(
+  <StrictMode>
+    <App />
+  </StrictMode>,
+)