feat(miniprogram): migrate invoice wallet mine and admin from bx-mobile.

Reuse invoice-wallets/invoices APIs with summary, upload, ledgers, and admin proxy upload.

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

miniprogram/utils/bxRequest.js

@@ -171,4 +171,73 @@ export function bxUploadFile(filePath, opts = {}) {
   })
 }
 
+/**
+ * 发票 multipart 上传（POST /invoices，name=files）
+ * 对齐 bx-mobile FormData：amount / remark / files / targetUserId
+ * @param {{ amount: number|string, remark?: string, filePath: string, targetUserId?: string|number, showError?: boolean }} opts
+ */
+export function bxUploadInvoice(opts = {}) {
+  const showError = opts.showError !== false
+  const token = uni.getStorageSync(TOKEN_KEY) || ''
+  const filePath = opts.filePath
+  if (!filePath) {
+    return Promise.reject(new Error('请选择发票文件'))
+  }
+  const formData = {
+    amount: String(opts.amount ?? '')
+  }
+  if (opts.remark != null && String(opts.remark).trim()) {
+    formData.remark = String(opts.remark).trim()
+  }
+  if (opts.targetUserId != null && opts.targetUserId !== '') {
+    formData.targetUserId = String(opts.targetUserId)
+  }
+  const url = `${API_BASE}/invoices`
+
+  return new Promise((resolve, reject) => {
+    uni.uploadFile({
+      url,
+      filePath,
+      name: 'files',
+      formData,
+      header: {
+        ...(token ? { Authorization: `Bearer ${token}` } : {})
+      },
+      success: (res) => {
+        const status = res.statusCode
+        let body = res.data
+        if (typeof body === 'string') {
+          try {
+            body = JSON.parse(body)
+          } catch (e) {
+            body = {}
+          }
+        }
+        if (status === 401) {
+          onUnauthorized()
+          reject(new Error('登录已过期'))
+          return
+        }
+        if (status < 200 || status >= 300) {
+          const message = parseDetailMessage(body) || `上传失败(${status})`
+          if (showError) uni.showToast({ title: String(message).slice(0, 40), icon: 'none' })
+          reject(new Error(message))
+          return
+        }
+        if (body && body.code !== undefined && body.code !== 0) {
+          const message = body.msg || '上传失败'
+          if (showError) uni.showToast({ title: String(message).slice(0, 40), icon: 'none' })
+          reject(new Error(message))
+          return
+        }
+        resolve(body)
+      },
+      fail: (err) => {
+        if (showError) uni.showToast({ title: '上传失败', icon: 'none' })
+        reject(err)
+      }
+    })
+  })
+}
+
 export default bxRequest