feat(home): add disclaimer modal for board navigation

src/components/disclaimer-modal/disclaimer-modal.module.css

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+.backdrop {
+  position: fixed;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background-color: rgba(128, 128, 128, 0.5);
+  z-index: 999;
+}
+
+.disclaimerDialog {
+  position: absolute;
+  width: 300px;
+  top: 50px;
+  left: 50%;
+  margin-left: -151px;
+  background-color: rgb(255, 255, 255);
+  border: 1px solid rgb(136, 0, 0);
+  color: rgb(136, 0, 0);
+  box-shadow: rgba(0, 0, 0, 0.1) 2px 2px 0px 1px;
+  font-family: arial, helvetica, clean, sans-serif;
+  font-size: 13px;
+  line-height: 16.003px;
+  z-index: 1000;
+}
+
+.hd {
+  background-color: rgb(136, 0, 0);
+  color: rgb(255, 255, 255);
+  padding: 4px 6px;
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+}
+
+.hd h2 {
+  margin: 0;
+  padding: 0;
+  font-size: 13px;
+  font-weight: bold;
+}
+
+.closeButton {
+  all: unset;
+  cursor: pointer;
+  color: rgb(255, 255, 255);
+  font-size: 16px;
+  line-height: 16px;
+  width: 18px;
+  height: 18px;
+  text-align: center;
+  user-select: none;
+}
+
+.closeButton:hover {
+  opacity: 0.8;
+}
+
+.bd {
+  padding: 10px;
+}
+
+.bd p {
+  margin: 0 0 10px 0;
+}
+
+.bd ol {
+  margin: 0;
+  padding-left: 20px;
+}
+
+.bd li {
+  margin-bottom: 10px;
+}
+
+.bd a {
+  color: rgb(136, 0, 0);
+  text-decoration: underline;
+}
+
+.disclaimerFooter {
+  padding: 10px;
+  display: flex;
+  justify-content: flex-end;
+  gap: 10px;
+  border-top: 1px solid rgb(136, 0, 0);
+}
+
+.disclaimerFooter button {
+  padding: 4px 12px;
+  border: 1px solid rgb(136, 0, 0);
+  background-color: rgb(255, 255, 255);
+  color: rgb(136, 0, 0);
+  cursor: pointer;
+  font-size: 13px;
+  font-family: arial, helvetica, clean, sans-serif;
+}
+
+.disclaimerFooter button:hover {
+  background-color: rgb(250, 250, 250);
+}
+

src/components/disclaimer-modal/disclaimer-modal.tsx

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+import { useNavigate } from 'react-router-dom';
+import useDisclaimerModalStore from '../../stores/use-disclaimer-modal-store';
+import styles from './disclaimer-modal.module.css';
+
+const DisclaimerModal = () => {
+  const navigate = useNavigate();
+  const { showModal, targetAddress, closeDisclaimerModal, acceptDisclaimer } = useDisclaimerModalStore();
+
+  if (!showModal) {
+    return null;
+  }
+
+  const handleBackdropClick = (e: React.MouseEvent<HTMLDivElement>) => {
+    if (e.target === e.currentTarget) {
+      closeDisclaimerModal();
+    }
+  };
+
+  const handleAccept = () => {
+    acceptDisclaimer(navigate);
+  };
+
+  return (
+    <div className={styles.backdrop} onClick={handleBackdropClick}>
+      <div className={styles.disclaimerDialog}>
+        <div className={styles.hd}>
+          <h2>Disclaimer</h2>
+          <button className={styles.closeButton} onClick={closeDisclaimerModal} title='Close'>
+            ×
+          </button>
+        </div>
+        <div className={styles.bd}>
+          <p>To access boards on 5chan (the &quot;website&quot;), you understand and agree to the following:</p>
+          <ol>
+            <li>
+              The content on boards may be for mature audiences only and may not be suitable for minors. Boards are created and moderated by individual owners who run
+              their own nodes. If you are a minor or it is illegal for you to access mature content, do not proceed.
+            </li>
+            <li>
+              This website is presented to you AS IS, with no warranty, express or implied. By clicking &quot;I Agree,&quot; you agree that 5chan is a decentralized,
+              serverless, and adminless platform. The website operator does not create, own, moderate, or control any board content, which is stored peer-to-peer and
+              generated by board owners and users.
+            </li>
+            <li>
+              Each board has its own rules set by its owner. You agree to comply with the individual board&apos;s rules, which you can find on each board&apos;s page.
+              There are no global rules as 5chan has no central authority.
+            </li>
+          </ol>
+        </div>
+        <div className={styles.disclaimerFooter}>
+          <button onClick={handleAccept}>Accept</button>
+          <button onClick={closeDisclaimerModal}>Cancel</button>
+        </div>
+      </div>
+    </div>
+  );
+};
+
+export default DisclaimerModal;

src/components/disclaimer-modal/index.ts

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+export { default } from './disclaimer-modal';