feat: update WalicaOverlay component to include external site link and enhance link styles

Author: soranjiro

apps/web/src/lib/themes/standard-autumn/components/WalicaOverlay.svelte

@@ -17,7 +17,18 @@
         {@html CloseIcon}
         閉じる
       </button>
-      <span class="standard-autumn-walica-title">Walica</span>
+
+      <span class="standard-autumn-walica-title">
+        外部サイト:
+        <a
+          href="https://walica.jp"
+          target="_blank"
+          rel="noopener noreferrer"
+          class="standard-autumn-walica-link"
+        >
+          walica.jp
+        </a>
+      </span>
     </div>
     <iframe
       src={`https://walica.jp/group/${walicaId}`}

apps/web/src/lib/themes/standard-autumn/styles/dialog.css

@@ -175,6 +175,15 @@
   color: var(--standard-autumn-text);
 }
 
+.standard-autumn-walica-link {
+  color: #0066cc;
+  text-decoration: underline;
+}
+
+.standard-autumn-walica-link:hover {
+  color: #004499;
+}
+
 .standard-autumn-walica-frame {
   flex: 1;
   width: 100%;