refactor: 重构设置、API、图库与存储页面前端结构。

将操作日志并入设置侧栏，补齐检查更新提示与版本接口刷新；拆分各模块组件并修复图库搜索分页变量。

app/components/ImageCard.vue

@@ -9,20 +9,24 @@ const props = withDefaults(defineProps<{
   showKey?: boolean
   showStorage?: boolean
   compact?: boolean
+  gallery?: boolean
 }>(), {
   selectable: true,
   showKey: true,
   showStorage: false,
-  compact: false
+  compact: false,
+  gallery: false
 })
 
 const emit = defineEmits<{
   'update:selected': [value: boolean]
   'preview': []
+  'delete': []
 }>()
 
 const { formatFileSize } = useFileSize()
 const { t, locale } = useI18n()
+const toast = useToast()
 const { copyFormat } = useUploadPreferences()
 const imageError = ref(false)
 const retryCount = ref(0)
@@ -110,13 +114,157 @@ const storageIcon = computed(() =>
   props.image.storage?.type === 'local' ? 'i-lucide-hard-drive' : 'i-lucide-cloud'
 )
 
+const uploadSourceLabel = computed(() => {
+  switch (props.image.uploadSource) {
+    case 'web':
+      return t('stats.tagWeb')
+    case 'api':
+      return t('stats.tagApi')
+    default:
+      return null
+  }
+})
+
 function toggleSelected(value: boolean | 'indeterminate') {
   emit('update:selected', value === true)
 }
+
+const copyingUrl = ref(false)
+
+async function copyGalleryUrl() {
+  if (copyingUrl.value || !props.image.url) return
+  copyingUrl.value = true
+  try {
+    if (typeof navigator !== 'undefined' && navigator.clipboard?.writeText) {
+      await navigator.clipboard.writeText(props.image.url)
+    } else {
+      const textarea = document.createElement('textarea')
+      textarea.value = props.image.url
+      textarea.setAttribute('readonly', '')
+      textarea.style.position = 'fixed'
+      textarea.style.left = '-9999px'
+      document.body.appendChild(textarea)
+      textarea.select()
+      document.execCommand('copy')
+      document.body.removeChild(textarea)
+    }
+    toast.add({ title: t('copy.copiedUrl'), color: 'success' })
+  } catch {
+    toast.add({ title: t('copy.failedManual'), color: 'error' })
+  } finally {
+    copyingUrl.value = false
+  }
+}
 </script>
 
 <template>
-  <div class="flex flex-col overflow-hidden rounded-xl border border-default bg-elevated shadow-sm">
+  <div
+    v-if="gallery"
+    class="flex flex-col overflow-hidden rounded-xl border border-default bg-elevated"
+  >
+    <div class="relative aspect-[4/3] shrink-0 overflow-hidden bg-muted">
+      <img
+        v-if="!imageError"
+        :key="`${image.key}-${retryCount}`"
+        :src="previewSrc"
+        :alt="image.originalName"
+        loading="lazy"
+        class="size-full cursor-zoom-in object-cover object-center"
+        role="button"
+        tabindex="0"
+        :aria-label="t('image.openPreview')"
+        @click="emit('preview')"
+        @keydown.enter="emit('preview')"
+        @keydown.space.prevent="emit('preview')"
+        @error="onPreviewError"
+      >
+      <div
+        v-else
+        class="flex size-full items-center justify-center text-xs text-muted"
+      >
+        {{ t('image.previewFailed') }}
+      </div>
+
+      <div
+        v-if="selectable"
+        class="absolute top-2 left-2"
+        @click.stop
+      >
+        <UCheckbox
+          :model-value="selected"
+          :ui="{ base: 'shadow-none' }"
+          @update:model-value="toggleSelected"
+        />
+      </div>
+    </div>
+
+    <div class="flex flex-col gap-1.5 p-3">
+      <p
+        class="truncate text-sm font-semibold"
+        :title="image.originalName"
+      >
+        {{ image.originalName }}
+      </p>
+      <p class="truncate text-xs text-muted">
+        {{ uploadedLabel }} · {{ formatFileSize(image.size) }}
+      </p>
+      <div
+        v-if="uploadSourceLabel || (showStorage && image.storage)"
+        class="flex flex-wrap gap-1.5"
+      >
+        <span
+          v-if="uploadSourceLabel"
+          class="inline-flex rounded-md bg-primary/10 px-2 py-0.5 text-xs font-medium text-primary"
+        >
+          {{ uploadSourceLabel }}
+        </span>
+        <span
+          v-if="showStorage && image.storage"
+          class="inline-flex max-w-full items-center gap-1 rounded-md border border-default px-2 py-0.5 text-xs text-muted"
+          :title="image.storage.name"
+        >
+          <UIcon
+            :name="storageIcon"
+            class="size-3 shrink-0"
+          />
+          <span class="truncate">{{ image.storage.name }}</span>
+        </span>
+      </div>
+    </div>
+
+    <div class="flex items-center justify-around border-t border-default px-2 py-2 text-muted">
+      <UButton
+        icon="i-lucide-link"
+        variant="ghost"
+        color="neutral"
+        size="sm"
+        :loading="copyingUrl"
+        :aria-label="t('common.copy')"
+        @click="copyGalleryUrl"
+      />
+      <UButton
+        icon="i-lucide-eye"
+        variant="ghost"
+        color="neutral"
+        size="sm"
+        :aria-label="t('image.openPreview')"
+        @click="emit('preview')"
+      />
+      <UButton
+        icon="i-lucide-trash-2"
+        variant="ghost"
+        color="neutral"
+        size="sm"
+        :aria-label="t('common.delete')"
+        @click="emit('delete')"
+      />
+    </div>
+  </div>
+
+  <div
+    v-else
+    class="flex flex-col overflow-hidden rounded-xl border border-default bg-elevated shadow-sm"
+  >
     <div
       class="relative aspect-square shrink-0 overflow-hidden bg-muted"
       role="button"