fix: update ExtensionCard actions and add readme link functionality

dashboard/src/components/shared/ExtensionCard.vue

@@ -131,7 +131,7 @@ const viewReadme = () => {
       </div>
     </v-card-text>
 
-    <v-card-actions style="padding: 0px; margin-top: auto;">
+    <v-card-actions style="margin-left: 0px; gap: 2px;">
       <v-btn color="teal-accent-4" text="查看文档" variant="text" @click="viewReadme"></v-btn>
       <v-btn v-if="!marketMode" color="teal-accent-4" text="操作" variant="text" @click="reveal = true"></v-btn>
       <v-btn v-if="marketMode && !extension?.installed" color="teal-accent-4" text="安装" variant="text"

dashboard/src/views/ExtensionMarketplace.vue

@@ -61,7 +61,8 @@ import 'highlight.js/styles/github.css';
                                 <ExtensionCard :extension="plugin" class="h-120 rounded-lg"
                                                market-mode="true" :highlight="true"
                                                @install="extension_url=plugin.repo;
-                                               newExtension()">
+                                               newExtension()"
+                                               @view-readme="open(plugin.repo)">
                                 </ExtensionCard>
                             </v-col>
                         </v-row>