feat(web-admin): add photoUrls types and pl-photo helpers

Co-authored-by: Cursor <cursoragent@cursor.com>

web-admin/src/utils/pl-photo.ts

@@ -0,0 +1,17 @@
+import { normalizeAttachmentUrls } from '@/utils/download-attachment'
+
+/** 取逗号分隔附件中的第一张 URL（相对或绝对） */
+export function firstPhotoUrl(raw?: string | null): string {
+  const normalized = normalizeAttachmentUrls(raw)
+  if (!normalized) return ''
+  return normalized.split(',').map((s) => s.trim()).filter(Boolean)[0] || ''
+}
+
+/** 拼 MinIO 完整访问地址（与 AttachmentUploadField 一致） */
+export function resolvePhotoDisplayUrl(url?: string | null): string {
+  const trimmed = String(url || '').trim()
+  if (!trimmed) return ''
+  if (/^https?:\/\//i.test(trimmed)) return trimmed
+  const base = String(import.meta.env.VITE_MINIO_BASE_URL || '').replace(/\/$/, '')
+  return base ? `${base}/${trimmed.replace(/^\//, '')}` : trimmed
+}