feat(socialcard): add custom color and background image support

Adds new social card customization options including solid color backgrounds and custom background images with Unsplash integration. Introduces new database fields for storing color, background image URL, and Unsplash attribution. Adds media kit settings page for repository-level social card configuration.

web_src/js/components/RepoActionView.vue

@@ -580,6 +580,11 @@ export default defineComponent({
                 <SvgIcon name="octicon-gear" :size="18"/>
               </button>
               <div class="menu transition action-job-menu" :class="{visible: menuVisible}" v-if="menuVisible" v-cloak>
+                <a class="item link-action" :data-url="`${run.link}/jobs/${jobIndex}/rerun`" v-if="run.jobs[jobIndex]?.canRerun">
+                  <i class="icon"><SvgIcon name="octicon-sync"/></i>
+                  {{ locale.rerun }}
+                </a>
+                <div class="divider" v-if="run.jobs[jobIndex]?.canRerun"/>
                 <a class="item" @click="toggleTimeDisplay('seconds')">
                   <i class="icon"><SvgIcon :name="timeVisible['log-time-seconds'] ? 'octicon-check' : 'gitea-empty-checkbox'"/></i>
                   {{ locale.showLogSeconds }}