refactor: get short commit

components/common/CommonPreviewPrompt.vue

@@ -14,7 +14,7 @@ const build = useBuildInfo()
     <p>
       <i18n-t keypath="help.build_preview.desc1">
         <NuxtLink :href="`https://github.com/elk-zone/elk/commit/${build.commit}`" target="_blank" text-rose hover:underline>
-          <code>{{ build.commit.slice(0, 7) }}</code>
+          <code>{{ build.shortCommit }}</code>
         </NuxtLink>
       </i18n-t>
     </p>

components/nav/NavFooter.vue

@@ -1,5 +1,5 @@
 <script setup lang="ts">
-const buildInfo = useAppConfig().buildInfo
+const buildInfo = useBuildInfo()
 const timeAgoOptions = useTimeAgoOptions()
 
 const userSettings = useUserSettings()
@@ -65,7 +65,7 @@ function toggleDark() {
           target="_blank"
           font-mono
         >
-          {{ buildInfo.commit.slice(0, 7) }}
+          {{ buildInfo.shortCommit }}
         </NuxtLink>
       </template>
     </div>