费用提交

finance/src/main/java/com/baiyue/finance/controller/PlatformFinanceWalletController.java

@@ -7,11 +7,16 @@ import com.baiyue.finance.dto.FinanceWalletDtos.CreditLimitRequest;
 import com.baiyue.finance.dto.FinanceWalletDtos.RechargeReviewRequest;
 import com.baiyue.finance.dto.FinancePhase1Dtos.PageEnvelope;
 import com.baiyue.finance.dto.FinanceWalletDtos.RechargeRequest;
+import com.baiyue.finance.dto.FinanceWalletDtos.WalletRefundRequest;
 import com.baiyue.finance.service.FinanceWalletService;
+import java.nio.charset.StandardCharsets;
+import java.util.UUID;
+import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.security.core.annotation.AuthenticationPrincipal;
 import org.springframework.web.bind.annotation.*;
+import org.springframework.web.server.ResponseStatusException;
 
 @RestController
 @RequestMapping("/api/platform/finance/v1")
@@ -62,4 +67,25 @@ public class PlatformFinanceWalletController {
     @GetMapping("/recharge-requests/{requestId}/voucher")
     @PreAuthorize("hasAuthority('platform:finance:customer-account:list')")
     public ResponseEntity<byte[]> voucher(@PathVariable long requestId) { return service.voucher(requestId); }
+
+    /** 退款必须由平台财务针对原消费发起，复用资金服务的账户锁及累计可退上限。 */
+    @PostMapping("/accounts/{customerId}/ledger/{ledgerId}/refunds")
+    @PreAuthorize("hasAuthority('platform:finance:customer-account:adjust')")
+    public ApiResponse<?> refund(@AuthenticationPrincipal AuthenticatedUser user,
+                                 @PathVariable long customerId, @PathVariable long ledgerId,
+                                 @RequestHeader("Idempotency-Key") String idempotencyKey,
+                                 @RequestBody WalletRefundRequest request) {
+        if (user == null || user.userId() == null || !"PLATFORM".equals(user.appCode()) || !Long.valueOf(0L).equals(user.tenantId())) {
+            throw new ResponseStatusException(HttpStatus.FORBIDDEN, "仅平台财务可操作退款");
+        }
+        if (request == null || idempotencyKey == null || idempotencyKey.isBlank()
+            || idempotencyKey.trim().length() > 128) throw new IllegalArgumentException("退款请求及幂等键必填且幂等键不超过128字符");
+        if (request.reason() == null || request.reason().isBlank() || request.reason().length() > 500)
+            throw new IllegalArgumentException("退款原因必填且不超过500字符");
+        // 技术退款引用由客户和幂等键确定；资金流水号仍由正式 AC 编号生成器分配。
+        String refundNo = "MANUAL_REFUND:" + UUID.nameUUIDFromBytes(
+            (customerId + ":" + idempotencyKey.trim()).getBytes(StandardCharsets.UTF_8));
+        return FinanceResponses.success(service.refundConsumption(customerId, ledgerId, refundNo,
+            idempotencyKey.trim(), request.amount(), user.userId(), user.displayName(), request.reason().trim()));
+    }
 }

finance/src/main/java/com/baiyue/finance/dto/FinanceWalletDtos.java

@@ -54,6 +54,9 @@ public final class FinanceWalletDtos {
 
     public record WalletHoldActionRequest(String remark) { }
 
+    /** 关联原消费退款，原因必填，原流水保持不可变。 */
+    public record WalletRefundRequest(BigDecimal amount, String reason) { }
+
     public record WalletHold(long holdId, long customerId, String businessType,
                              String businessNo, BigDecimal amount,
                              BigDecimal actualFrozenAmount, BigDecimal creditFrozenAmount,

finance/src/main/java/com/baiyue/finance/service/BusinessFeeSourceEventService.java

@@ -135,6 +135,7 @@ public class BusinessFeeSourceEventService {
             positive(value.walletSettlement().holdId(), "walletSettlement.holdId");
             positive(value.walletSettlement().ledgerId(), "walletSettlement.ledgerId");
             if (blank(value.walletSettlement().commandEventId())) throw error("FIN-EVT-012", "缺少原资金命令引用");
+            walletIdentity(value);
         } else if ("OVERSEAS_PROCUREMENT_FEE".equals(value.sourceType()) && "RECEIVABLE".equals(value.direction())) {
             throw error("FIN-EVT-012", "采购应收必须引用成功实扣资金，不能进入待收费池");
         }
@@ -154,7 +155,7 @@ public class BusinessFeeSourceEventService {
                 throw error("FIN-EVT-012", "应付来源供应商快照不一致");
             validateSettlement(value);
         } else if (!blank(value.supplierId()) || !blank(value.supplierName()) || !blank(value.supplierCategory())
-            || !blank(value.settlementMode()) || value.paidAt() != null
+            || value.settlementMode() != null && !Set.of("BILL", "WALLET").contains(value.settlementMode()) || value.paidAt() != null
             || !blank(value.paymentMethod()) || !blank(value.paymentReferenceNo())
             || (value.paymentVoucherFileIds() != null && !value.paymentVoucherFileIds().isEmpty())) {
             throw error("FIN-EVT-012", "应收来源不得携带供应商或付款事实");
@@ -202,9 +203,10 @@ public class BusinessFeeSourceEventService {
             long customerId = positive(source.customerId(), "customerId");
             long holdId = positive(reference.holdId(), "holdId");
             long ledgerId = positive(reference.ledgerId(), "ledgerId");
+            String[] identity = walletIdentity(source);
             List<Map<String, Object>> rows = jdbc.queryForList(
                 "SELECT l.amount,c.result_json FROM fin_wallet_hold h JOIN fin_wallet_ledger l ON l.id=h.action_ledger_id AND l.customer_id=h.customer_id JOIN fin_wallet_command_inbox c ON c.event_id=? AND c.status='SUCCEEDED' WHERE h.id=? AND l.id=? AND h.customer_id=? AND h.business_type=? AND h.business_no=? AND h.status='SETTLED' AND l.change_type='CONSUMPTION' FOR UPDATE",
-                reference.commandEventId(), holdId, ledgerId, customerId, source.businessType(), source.businessNo());
+                reference.commandEventId(), holdId, ledgerId, customerId, identity[0], identity[1]);
             if (rows.size() != 1 || !(rows.get(0).get("amount") instanceof java.math.BigDecimal amount)
                 || amount.negate().compareTo(source.totalAmount()) != 0) {
                 throw error("FIN-EVT-017", "费用来源与成功扣款的客户、业务或金额不匹配");
@@ -218,8 +220,8 @@ public class BusinessFeeSourceEventService {
                 || !reference.holdId().equals(result.path("walletHoldId").asText())
                 || !reference.ledgerId().equals(result.path("walletLedgerId").asText())
                 || result.path("customerId").asLong() != customerId
-                || !source.businessType().equals(result.path("businessType").asText())
-                || !source.businessNo().equals(result.path("businessNo").asText())
+                || !identity[0].equals(result.path("businessType").asText())
+                || !identity[1].equals(result.path("businessNo").asText())
                 || result.path("amount").decimalValue().compareTo(source.totalAmount()) != 0) {
                 throw error("FIN-EVT-017", "费用来源引用的资金结果不匹配");
             }
@@ -234,6 +236,25 @@ public class BusinessFeeSourceEventService {
             feeSourceId);
     }
 
+    /** 独立锁款仅接收已约定的人工费用或仓租身份，不能借此挂接任意业务扣款。 */
+    private String[] walletIdentity(BusinessFeeSourceChangedV1 source) {
+        var reference = source.walletSettlement();
+        String type = reference.walletBusinessType(), no = reference.walletBusinessNo();
+        if (type == null && no == null) return new String[]{source.businessType(), source.businessNo()};
+        if (blank(type) || blank(no) || !"LASTLEG".equals(source.sourceSystem()))
+            throw error("FIN-EVT-017", "资金业务引用不完整");
+        if ("OVERSEAS_MANUAL_FEE".equals(type)) {
+            if ("FEE_TYPE_077".equals(source.feeItemCode())
+                || !no.matches(java.util.regex.Pattern.quote(source.sourceFeeId()) + "-[1-9][0-9]*"))
+                throw error("FIN-EVT-017", "人工费用资金引用与来源不匹配");
+        } else if ("STORAGE_RENT".equals(type)) {
+            if (!"FEE_TYPE_077".equals(source.feeItemCode()))
+                throw error("FIN-EVT-017", "仓租资金引用与费用项目不匹配");
+            positive(no, "walletBusinessNo");
+        } else throw error("FIN-EVT-017", "不支持的独立资金业务引用");
+        return new String[]{type, no};
+    }
+
     private void materializeDirectPaidCost(String system, long feeId, BusinessFeeSourceChangedV1 value) {
         jdbc.update("INSERT INTO fin_cost(tenant_id,cost_no,cost_type,cost_origin,source_system,source_type,source_fee_id,source_fee_version,source_hash,order_id,inbound_id,container_id,warehouse_id,supplier_id,supplier_name_snapshot,fee_item_code,fee_item_name,currency_code,cost_amount,voucher_file_ids,paid_at,payment_method,payment_reference_no,status,confirmed_at,created_by,created_by_name,updated_by) VALUES(?,?,'SOURCE_DIRECT_PAID','BUSINESS_DIRECT_PAID',?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,'CONFIRMED',CURRENT_TIMESTAMP(3),0,'系统',0)",
             positive(value.customerId(), "customerId"), "DIRECT-" + system + '-' + value.sourceType() + '-' + feeId + "-V" + value.sourceVersion(),

finance/src/main/resources/openapi/finance-wallet-refund-v1.yaml

@@ -0,0 +1,61 @@
+openapi: 3.0.3
+info:
+  title: 平台资金账户关联退款
+  version: 1.0.0
+  description: 原消费保持不可变；退款记录关联原消费流水号，累计退款不得超过原消费金额，包含业务退款事件已退金额。
+paths:
+  /api/platform/finance/v1/accounts/{customerId}/ledger/{ledgerId}/refunds:
+    post:
+      operationId: refundWalletConsumption
+      summary: 原消费关联退款
+      description: 仅平台 tenantId=0 且具有 platform:finance:customer-account:adjust 权限可操作。账户行锁串行校验累计可退金额，无需前端提交账户版本。优先归还已用授信，再增加实际余额。相同键同请求返回原流水；相同键不同原消费或金额失败。非成功消费、跨客户原流水、超额退款均拒绝。
+      security:
+        - bearerAuth: []
+      parameters:
+        - {name: customerId, in: path, required: true, schema: {type: string, pattern: '^[1-9][0-9]*$'}}
+        - {name: ledgerId, in: path, required: true, schema: {type: string, pattern: '^[1-9][0-9]*$'}}
+        - {name: Idempotency-Key, in: header, required: true, schema: {type: string, minLength: 1, maxLength: 128}}
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              type: object
+              required: [amount, reason]
+              properties:
+                amount: {type: number, minimum: 0.01, maximum: 999999999999.99, multipleOf: 0.01}
+                reason: {type: string, minLength: 1, maxLength: 500, description: 必填退款原因，不得仅空白}
+      responses:
+        '200':
+          description: 统一响应 code=200 成功；业务失败使用 FIN-REQ-400、FIN-WALLET-404、FIN-IDEMPOTENCY-CONFLICT 或 FIN-WALLET-REFUND-EXCEEDED 等业务码。
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  code: {type: string}
+                  data:
+                    $ref: '#/components/schemas/RefundLedgerEntry'
+        '403': {description: 非平台主体或缺少调账权限}
+components:
+  securitySchemes:
+    bearerAuth: {type: http, scheme: bearer, bearerFormat: JWT}
+  schemas:
+    RefundLedgerEntry:
+      type: object
+      description: 完整返回 FinanceWalletDtos.WalletLedgerEntry，资金余额字段沿用账户流水协议。
+      properties:
+        ledgerId: {type: string}
+        businessNo: {type: string, description: 新退款流水正式 AC 单号}
+        changeType: {type: string, enum: [REFUND]}
+        amount: {type: number, description: 实际退款正金额}
+        sourceType: {type: string, enum: [BUSINESS_REFUND]}
+        sourceNo: {type: string, description: 客户及幂等键派生的稳定技术退款引用}
+        referenceNo: {type: string, description: 原消费流水 businessNo，用于关联及累计可退校验}
+        operatorName: {type: string, nullable: true}
+        remark: {type: string, description: 退款原因}
+        actualBalanceAfter: {type: number}
+        frozenBalanceAfter: {type: number}
+        availableBalanceAfter: {type: number}
+        creditUsedAfter: {type: number}
+        availableCreditAfter: {type: number}

finance/src/test/java/com/baiyue/finance/BusinessFeeSourceEventServiceTest.java

@@ -286,4 +286,82 @@ class BusinessFeeSourceEventServiceTest {
             base.aggregateType(), base.aggregateId(), base.aggregateVersion(), null, base.traceId(), base.correlationId(), null,
             payload, EventPayloadHash.sha256(EventPayloadCanonicalizer.canonicalize(payload)));
     }
+
+    @Test
+    void manualConsumptionUsesDedicatedFundingIdentityWhilePreservingServiceOrder() {
+        verifyDedicatedConsumption("OVERSEAS_MANUAL_FEE", "701-2", "FEE_TYPE_071");
+    }
+
+    @Test
+    void rentConsumptionUsesPreparationIdentityWhilePreservingServiceOrder() {
+        verifyDedicatedConsumption("STORAGE_RENT", "445", "FEE_TYPE_077");
+    }
+
+    @Test
+    void dedicatedFundingCannotReferenceAnotherManualFeeOrWrongFeeItem() {
+        assertThatThrownBy(() -> service.consume(dedicatedEvent("OVERSEAS_MANUAL_FEE", "702-1", "FEE_TYPE_071")))
+            .hasMessageContaining("来源不匹配");
+        assertThatThrownBy(() -> service.consume(dedicatedEvent("STORAGE_RENT", "445", "FEE_TYPE_071")))
+            .hasMessageContaining("项目不匹配");
+        noFinancialWrites();
+    }
+
+    @Test
+    void dedicatedConsumptionCannotReuseHoldAlreadyLinkedToAnotherSource() {
+        stubDedicatedConsumption("STORAGE_RENT", "445");
+        when(jdbc.queryForList(startsWith("SELECT id FROM fin_fee_source WHERE wallet_hold_id="),
+            eq(Long.class), eq(9L), eq(901L))).thenReturn(List.of(902L));
+        assertThatThrownBy(() -> service.consume(dedicatedEvent("STORAGE_RENT", "445", "FEE_TYPE_077")))
+            .hasMessageContaining("已关联其他费用");
+        verify(jdbc, never()).update(startsWith("UPDATE fin_fee_source SET wallet_hold_id="), any(Object[].class));
+    }
+
+    @Test
+    void dedicatedConsumptionRejectsResultFromDifferentFundingBusiness() {
+        stubDedicatedConsumption("STORAGE_RENT", "445");
+        when(jdbc.queryForList(startsWith("SELECT l.amount,c.result_json"), eq("command-1"), eq(9L), eq(72L),
+            eq(10001L), eq("STORAGE_RENT"), eq("445"))).thenReturn(List.of(Map.of(
+                "amount", new BigDecimal("-120.00"), "result_json", """
+                    {"result":"SUCCEEDED","operation":"SETTLE","commandEventId":"command-1",
+                     "walletHoldId":"9","walletLedgerId":"72","customerId":10001,
+                     "businessType":"STORAGE_RENT","businessNo":"446","amount":120.00}
+                    """)));
+        assertThatThrownBy(() -> service.consume(dedicatedEvent("STORAGE_RENT", "445", "FEE_TYPE_077")))
+            .hasMessageContaining("资金结果不匹配");
+    }
+
+    private void verifyDedicatedConsumption(String type, String no, String item) {
+        stubDedicatedConsumption(type, no);
+        EventEnvelope event = dedicatedEvent(type, no, item);
+        service.consume(event);
+        verify(jdbc).update(startsWith("UPDATE fin_fee_source SET wallet_hold_id="), eq(9L), eq(901L), eq(10001L));
+        assertThat(event.payload().path("businessType").asText()).isEqualTo("WAREHOUSE_SERVICE");
+        assertThat(event.payload().path("businessNo").asText()).isEqualTo("PO-US-001");
+    }
+
+    private void stubDedicatedConsumption(String type, String no) {
+        when(jdbc.queryForObject(startsWith("SELECT id FROM fin_fee_source"), eq(Long.class),
+            eq("LASTLEG"), eq("OVERSEAS_WAREHOUSE_FEE"), eq(701L), eq(1))).thenReturn(901L);
+        ObjectNode result = json.createObjectNode();
+        result.put("result", "SUCCEEDED").put("operation", "SETTLE").put("commandEventId", "command-1")
+            .put("walletHoldId", "9").put("walletLedgerId", "72").put("customerId", 10001)
+            .put("businessType", type).put("businessNo", no).put("amount", new BigDecimal("120.00"));
+        when(jdbc.queryForList(startsWith("SELECT l.amount,c.result_json"), eq("command-1"), eq(9L), eq(72L),
+            eq(10001L), eq(type), eq(no))).thenReturn(List.of(Map.of(
+                "amount", new BigDecimal("-120.00"), "result_json", result.toString())));
+    }
+
+    private EventEnvelope dedicatedEvent(String type, String no, String item) {
+        EventEnvelope base = eventWithoutInbound();
+        ObjectNode payload = base.payload().deepCopy();
+        payload.put("feeItemCode", item);
+        payload.putObject("walletSettlement").put("commandEventId", "command-1").put("holdId", "9")
+            .put("ledgerId", "72").put("walletBusinessType", type).put("walletBusinessNo", no);
+        payload.putNull("action"); payload.putNull("sourceHash");
+        payload.put("sourceHash", EventPayloadHash.sha256(EventPayloadCanonicalizer.canonicalize(payload)));
+        payload.put("action", "PUBLISHED");
+        return new EventEnvelope(base.eventId(), base.eventType(), base.eventVersion(), base.occurredAt(), base.tenantId(),
+            base.aggregateType(), base.aggregateId(), base.aggregateVersion(), null, base.traceId(), base.correlationId(), null,
+            payload, EventPayloadHash.sha256(EventPayloadCanonicalizer.canonicalize(payload)));
+    }
 }

finance/src/test/java/com/baiyue/finance/service/OverseasFeeWalletClosureTest.java

@@ -0,0 +1,183 @@
+package com.baiyue.finance.service;
+
+import com.baiyue.finance.client.FinanceFileClient;
+import com.baiyue.finance.dto.FinanceWalletDtos.*;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.h2.jdbcx.JdbcDataSource;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.jdbc.datasource.DataSourceTransactionManager;
+import org.springframework.transaction.support.TransactionTemplate;
+
+import java.math.BigDecimal;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.time.LocalDate;
+import java.util.List;
+import java.util.UUID;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.regex.Pattern;
+
+import static org.assertj.core.api.Assertions.*;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.*;
+
+/** 真实资金服务、隔离数据库及事务验证海外费用释放、实扣与重复操作。 */
+class OverseasFeeWalletClosureTest {
+    private JdbcTemplate jdbc;
+    private FinanceWalletService wallet;
+    private TransactionTemplate transaction;
+
+    /** 复用正式资金表定义，所有造数只进入本测试独立内存库。 */
+    @BeforeEach void setup() throws Exception {
+        var dataSource = new JdbcDataSource();
+        dataSource.setURL("jdbc:h2:mem:" + UUID.randomUUID() + ";MODE=MySQL;DATABASE_TO_LOWER=TRUE;DB_CLOSE_DELAY=-1");
+        jdbc = new JdbcTemplate(dataSource);
+        transaction = new TransactionTemplate(new DataSourceTransactionManager(dataSource));
+        var sql = Files.readString(Path.of("src/main/resources/db/finance.sql"));
+        for (var table : List.of("fin_wallet_account", "fin_wallet_hold", "fin_wallet_ledger", "fin_idempotency_record", "fin_audit_log")) {
+            var matcher = Pattern.compile("(?s)CREATE TABLE IF NOT EXISTS " + table + " \\(.*?\\) ENGINE=[^;]+;").matcher(sql);
+            assertThat(matcher.find()).as(table).isTrue();
+            // H2 使用同一列及约束，但去除 MySQL 引擎与更新时间自动生成，避免多列生成键差异。
+            var ddl = matcher.group().replaceAll("(?s) ENGINE=.*", "")
+                .replaceAll("(?i) UNSIGNED", "")
+                .replaceAll("(?i) ON UPDATE CURRENT_TIMESTAMP\\(3\\)", "")
+                .replaceAll("(?i) DEFAULT CURRENT_TIMESTAMP\\(3\\)", "")
+                .replaceAll("(?i)((?:created_at|updated_at) DATETIME\\(3\\)) NOT NULL", "$1 NULL");
+            jdbc.execute(ddl);
+        }
+        var numbers = mock(FinanceDocumentNumberGenerator.class);
+        var sequence = new AtomicInteger();
+        when(numbers.next(anyString())).thenAnswer(call -> "AC-TEST-" + sequence.incrementAndGet());
+        wallet = new FinanceWalletService(jdbc, new ObjectMapper().findAndRegisterModules(),
+            mock(FinanceFileClient.class), numbers, "test", "", "test", "test");
+        jdbc.update("INSERT INTO fin_wallet_account(customer_id,currency_code,actual_balance,frozen_balance,available_balance,credit_limit,credit_used,credit_frozen,credit_expires_on,version,created_by,updated_by) VALUES(9,'CNY',60,0,160,100,0,0,?,0,0,0)", LocalDate.now().plusDays(7));
+    }
+
+    /** 驳回后释放原冻结，实际余额和授信均恢复可用且不发生消费。 */
+    @Test void rejectionReleasesCashAndCreditExactlyOnce() {
+        freeze();
+        assertThat(wallet.account(9).frozenBalance()).isEqualByComparingTo("80.00");
+        assertThat(wallet.account(9).creditFrozen()).isEqualByComparingTo("20.00");
+        var request = new WalletHoldActionRequest("金额录错，驳回费用");
+        transaction.execute(status -> wallet.release(9, "OVERSEAS_MANUAL_FEE", "701-1", "release", request));
+        transaction.execute(status -> wallet.release(9, "OVERSEAS_MANUAL_FEE", "701-1", "release", request));
+        var account = wallet.account(9);
+        assertThat(account.actualBalance()).isEqualByComparingTo("60.00");
+        assertThat(account.frozenBalance()).isZero(); assertThat(account.creditFrozen()).isZero();
+        assertThat(account.availableBalance()).isEqualByComparingTo("160.00");
+        assertThat(count("CONSUMPTION")).isZero(); assertThat(count("UNFREEZE")).isEqualTo(1);
+    }
+
+    /** 扣款事务失败后可重试原请求，多次点击或不同请求键均不重复消费。 */
+    @Test void failedSettlementRollsBackAndRetryConsumesOnlyOnce() {
+        freeze();
+        var request = new WalletHoldActionRequest("审核通过扣款");
+        assertThatThrownBy(() -> transaction.execute(status -> {
+            wallet.settle(9, "OVERSEAS_MANUAL_FEE", "701-1", "settle", request);
+            throw new IllegalStateException("模拟扣款事务提交前异常");
+        })).hasMessageContaining("模拟扣款");
+        assertThat(wallet.account(9).actualBalance()).isEqualByComparingTo("60.00");
+        assertThat(count("CONSUMPTION")).isZero();
+        for (int repeat = 0; repeat < 3; repeat++)
+            transaction.execute(status -> wallet.settle(9, "OVERSEAS_MANUAL_FEE", "701-1", "settle", request));
+        assertThatThrownBy(() -> transaction.execute(status -> wallet.settle(9, "OVERSEAS_MANUAL_FEE", "701-1", "another-key", request)))
+            .hasMessageContaining("已处理");
+        assertThat(wallet.account(9).actualBalance()).isZero();
+        assertThat(wallet.account(9).creditUsed()).isEqualByComparingTo("20.00");
+        assertThat(wallet.account(9).frozenBalance()).isZero(); assertThat(count("CONSUMPTION")).isEqualTo(1);
+    }
+
+    /** 第一版错扣退回复用手工充值；原因、关联单号和操作人进入资金流水。 */
+    @Test void manualCreditRetainsCorrectionReasonAndReplaysWithoutDoubleCredit() {
+        var request = new AccountAdjustmentRequest("RECHARGE", new BigDecimal("12.00"), LocalDate.now(),
+            "OTHER", "TR-001 / 费用701", "退回多收操作费", 0);
+        var first = transaction.execute(status -> wallet.adjust(9, 7, "财务员", "correction-credit", request));
+        var second = transaction.execute(status -> wallet.adjust(9, 7, "财务员", "correction-credit", request));
+        assertThat(second.ledgerId()).isEqualTo(first.ledgerId());
+        assertThat(first.remark()).isEqualTo("退回多收操作费");
+        assertThat(first.referenceNo()).isEqualTo("TR-001 / 费用701");
+        assertThat(first.operatorName()).isEqualTo("财务员");
+        assertThat(wallet.account(9).actualBalance()).isEqualByComparingTo("72.00");
+        assertThat(count("RECHARGE")).isEqualTo(1);
+    }
+
+    /** 部分退款优先还授信，累计退款不能超过原消费，原消费事实保持不变。 */
+    @Test void linkedRefundRestoresCreditThenCashAndCannotExceedOriginalConsumption() {
+        freeze();
+        var hold = transaction.execute(status -> wallet.settle(9, "OVERSEAS_MANUAL_FEE", "701-1", "settle", new WalletHoldActionRequest("审核扣款")));
+        long original = hold.actionLedgerId();
+        var first = transaction.execute(status -> wallet.refundConsumption(9, original, "refund-1", "refund-key-1", new BigDecimal("25"), 7, "财务", "多收退款"));
+        var replay = transaction.execute(status -> wallet.refundConsumption(9, original, "refund-1", "refund-key-1", new BigDecimal("25"), 7, "财务", "多收退款"));
+        assertThat(replay.ledgerId()).isEqualTo(first.ledgerId());
+        assertThat(first.changeType()).isEqualTo("REFUND");
+        assertThat(first.sourceType()).isEqualTo("BUSINESS_REFUND");
+        assertThat(first.referenceNo()).isEqualTo(jdbc.queryForObject("SELECT business_no FROM fin_wallet_ledger WHERE id=?", String.class, original));
+        assertThat(wallet.account(9).creditUsed()).isZero();
+        assertThat(wallet.account(9).actualBalance()).isEqualByComparingTo("5.00");
+        assertThatThrownBy(() -> transaction.execute(status -> wallet.refundConsumption(9, original, "refund-1", "refund-key-1", BigDecimal.ONE, 7, "财务", "变更金额"))).hasMessageContaining("幂等");
+        assertThatThrownBy(() -> transaction.execute(status -> wallet.refundConsumption(9, original, "refund-too-much", "refund-too-much", new BigDecimal("56"), 7, "财务", "退款"))).hasMessageContaining("超过");
+        transaction.execute(status -> wallet.refundConsumption(9, original, "refund-2", "refund-key-2", new BigDecimal("55"), 7, "财务", "余款退款"));
+        assertThat(wallet.account(9).actualBalance()).isEqualByComparingTo("60.00");
+        assertThat(count("REFUND")).isEqualTo(2);
+        assertThat(count("CONSUMPTION")).isEqualTo(1);
+        assertThat(jdbc.queryForObject("SELECT amount FROM fin_wallet_ledger WHERE id=?", BigDecimal.class, original)).isEqualByComparingTo("-80.00");
+    }
+
+    /** 非消费流水、跨客户原流水及非正金额均不能改变余额。 */
+    @Test void linkedRefundRejectsWrongCustomerNonConsumptionAndInvalidAmount() {
+        freeze();
+        long frozenLedger = jdbc.queryForObject("SELECT id FROM fin_wallet_ledger WHERE change_type='FREEZE'", Long.class);
+        assertThatThrownBy(() -> transaction.execute(status -> wallet.refundConsumption(9, frozenLedger, "bad", "bad", BigDecimal.ONE, 7, "财务", "退款"))).hasMessageContaining("成功业务扣款");
+        var hold = transaction.execute(status -> wallet.settle(9, "OVERSEAS_MANUAL_FEE", "701-1", "settle", new WalletHoldActionRequest("扣款")));
+        jdbc.update("INSERT INTO fin_wallet_account(customer_id,currency_code,actual_balance,frozen_balance,available_balance,credit_limit,credit_used,credit_frozen,version,created_by,updated_by) VALUES(10,'CNY',0,0,0,0,0,0,0,0,0)");
+        assertThatThrownBy(() -> transaction.execute(status -> wallet.refundConsumption(10, hold.actionLedgerId(), "wrong-customer", "wrong-customer", BigDecimal.ONE, 7, "财务", "退款"))).hasMessageContaining("不存在");
+        assertThatThrownBy(() -> transaction.execute(status -> wallet.refundConsumption(9, hold.actionLedgerId(), "zero", "zero", BigDecimal.ZERO, 7, "财务", "退款"))).isInstanceOf(RuntimeException.class);
+        assertThatThrownBy(() -> transaction.execute(status -> wallet.refundConsumption(9, hold.actionLedgerId(), "blank", "blank", BigDecimal.ONE, 7, "财务", " "))).hasMessageContaining("原因");
+        assertThat(count("REFUND")).isZero();
+        assertThat(wallet.account(9).creditUsed()).isEqualByComparingTo("20.00");
+        assertThat(wallet.account(10).actualBalance()).isZero();
+    }
+
+    /** 不同请求键的并发退款同样受原消费可退余额约束。 */
+    @Test void concurrentRefundsSerializeOnAccountAndNeverOverRefund() throws Exception {
+        freeze();
+        var hold = transaction.execute(status -> wallet.settle(9, "OVERSEAS_MANUAL_FEE", "701-1", "settle", new WalletHoldActionRequest("扣款")));
+        var start = new java.util.concurrent.CountDownLatch(1);
+        var executor = java.util.concurrent.Executors.newFixedThreadPool(2);
+        try {
+            var results = new java.util.ArrayList<java.util.concurrent.Future<Boolean>>();
+            for (int i = 0; i < 2; i++) {
+                final String reference = "concurrent-" + i;
+                results.add(executor.submit(() -> {
+                    start.await();
+                    try {
+                        transaction.execute(status -> wallet.refundConsumption(9, hold.actionLedgerId(), reference, reference, new BigDecimal("50"), 7, "财务", "并发退款"));
+                        return true;
+                    } catch (FinanceEventException ex) {
+                        assertThat(ex.code()).isEqualTo("FIN-WALLET-REFUND-EXCEEDED");
+                        return false;
+                    }
+                }));
+            }
+            start.countDown();
+            int succeeded = 0;
+            for (var result : results) if (result.get(10, java.util.concurrent.TimeUnit.SECONDS)) succeeded++;
+            assertThat(succeeded).isEqualTo(1);
+            assertThat(count("REFUND")).isEqualTo(1);
+            assertThat(wallet.account(9).actualBalance()).isEqualByComparingTo("30.00");
+        } finally { executor.shutdownNow(); }
+    }
+
+    /** 冻结始终沿用同一海外费用业务身份。 */
+    private void freeze() {
+        transaction.execute(status -> wallet.freeze(9, "freeze", new WalletFreezeRequest(
+            new BigDecimal("80.00"), "OVERSEAS_MANUAL_FEE", "701-1", "海外费用")));
+    }
+
+    /** 按真实流水类型统计资金影响，避免只检查服务返回状态。 */
+    private int count(String type) {
+        return jdbc.queryForObject("SELECT COUNT(*) FROM fin_wallet_ledger WHERE customer_id=9 AND change_type=?", Integer.class, type);
+    }
+}