feat: activity logs, gallery storage filter, and upload rate limits

Add per-user activity logs with storage backend tracking, gallery
storage filter, and IP/token upload rate limiting. Fix storage delete
modal flash, pin local backend in filter order, and link settings
version to GitHub releases.

server/utils/image-query.ts

@@ -0,0 +1,9 @@
+import { getStorageBackendRow } from './storage-backends'
+
+export function readBackendIdQuery(
+  query: Record<string, unknown>
+): string | undefined | null {
+  const raw = typeof query.backendId === 'string' ? query.backendId.trim() : ''
+  if (!raw || raw === 'all') return undefined
+  return getStorageBackendRow(raw)?.id ?? null
+}