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。

server/utils/image-query.ts

@@ -1,4 +1,5 @@
 import { getStorageBackendRow } from './storage-backends'
+import { ALLOWED_MIME_TYPES } from './constants'
 
 export function readBackendIdQuery(
   query: Record<string, unknown>
@@ -7,3 +8,21 @@ export function readBackendIdQuery(
   if (!raw || raw === 'all') return undefined
   return getStorageBackendRow(raw)?.id ?? null
 }
+
+export function readContentTypeQuery(
+  query: Record<string, unknown>
+): string | undefined | null {
+  const raw = typeof query.contentType === 'string' ? query.contentType.trim() : ''
+  if (!raw || raw === 'all') return undefined
+  if (!(ALLOWED_MIME_TYPES as readonly string[]).includes(raw)) return null
+  return raw
+}
+
+export function readUploadSourceQuery(
+  query: Record<string, unknown>
+): 'web' | 'api' | undefined | null {
+  const raw = typeof query.uploadSource === 'string' ? query.uploadSource.trim() : ''
+  if (!raw || raw === 'all') return undefined
+  if (raw === 'web' || raw === 'api') return raw
+  return null
+}