feat: 对接越南AlinPay支付（充值+提现）

- recharge.vue: 新增ALIN_VN充值模板，最低1,000,000 VND
- withdraw.vue: 新增银行卡提现模板，银行列表API加载，最低1,000,000 VND
- api.js: 新增alinDeposit/applyWithdrawBank/getBankListVn接口

Generated with [Claude Code](https://claude.ai/code)
via [Happy](https://happy.engineering)

Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>

pages/recharge.vue

@@ -184,6 +184,38 @@
           @confirm="confirmPicker"
         ></u-picker>
       </template>
+      <!-- 越南 AlinPay 在线充值 -->
+      <template v-if="userInfo.pay_channel == 'ALIN_VN'">
+        <view class="picker-view">
+          <u-input
+            placeholder="Tối thiểu 1,000,000"
+            color="#93979b"
+            v-model="amount"
+            type="number"
+            border="none"
+          >
+            <u--text
+              :text="$lang.rechargeAmount || '充值金额'"
+              slot="prefix"
+              margin="0 3px 0 0"
+              type="tips"
+            ></u--text>
+          </u-input>
+        </view>
+        <view class="list mb60">
+          <u-button
+            class="button"
+            color="#e5b932"
+            :text="$lang.submit"
+            @click="submitAlin"
+          ></u-button>
+        </view>
+        <view class="list">
+          <view class="tip">
+            {{ $lang.rechargeTip }}
+          </view>
+        </view>
+      </template>
     </view>
     <view class="mb60"></view>
   </view>
@@ -324,6 +356,59 @@ export default {
           });
       }
     },
+    // 越南 AlinPay 充值
+    submitAlin() {
+      if (!this.amount || this.amount <= 0) {
+        this.$toast({
+          message: 'Vui lòng nhập số tiền',
+          duration: 2000,
+        });
+        return;
+      }
+      if (this.amount < 1000000) {
+        this.$toast({
+          message: 'Số tiền tối thiểu là 1,000,000',
+          duration: 2000,
+        });
+        return;
+      }
+      const params = {
+        user_id: this.userInfo.id,
+        price: this.amount,
+        client: 3,
+        username: this.userInfo.username,
+      };
+      this.$toast({
+        type: "loading",
+        message: `${this.$lang.submit}...`,
+        duration: 200000,
+      });
+      this.$api
+        .alinDeposit(params)
+        .then((res) => {
+          const d = res.Data || {};
+          if (d.status == 1 && d.url) {
+            const o = navigator.userAgent;
+            const isiOS = !!o.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/);
+            if (isiOS) {
+              window.location.href = d.url;
+            } else {
+              window.open(d.url, "_blank");
+            }
+          } else {
+            this.$toast({
+              message: d.message || '充值失败',
+              duration: 2000,
+            });
+          }
+        })
+        .catch((err) => {
+          console.log(err);
+        })
+        .finally(() => {
+          this.$toastHide();
+        });
+    },
   },
 };
 </script>