feat(pricing): 添加券码管理和使用功能

- 新增券码批次配置和券码实体
- 实现券码创建、领取、使用等接口
- 添加券码状态和优惠类型枚举
- 优化价格计算逻辑，支持券码优惠
- 新增优惠检测和应用相关功能

src/main/java/com/ycwl/basic/pricing/controller/VoucherManagementController.java

@@ -0,0 +1,92 @@
+package com.ycwl.basic.pricing.controller;
+
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.ycwl.basic.pricing.dto.req.VoucherBatchCreateReq;
+import com.ycwl.basic.pricing.dto.req.VoucherBatchQueryReq;
+import com.ycwl.basic.pricing.dto.req.VoucherClaimReq;
+import com.ycwl.basic.pricing.dto.req.VoucherCodeQueryReq;
+import com.ycwl.basic.pricing.dto.resp.VoucherBatchResp;
+import com.ycwl.basic.pricing.dto.resp.VoucherBatchStatsResp;
+import com.ycwl.basic.pricing.dto.resp.VoucherCodeResp;
+import com.ycwl.basic.pricing.service.VoucherBatchService;
+import com.ycwl.basic.pricing.service.VoucherCodeService;
+import com.ycwl.basic.utils.ApiResponse;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/pricing/voucher")
+@RequiredArgsConstructor
+public class VoucherManagementController {
+    
+    private final VoucherBatchService voucherBatchService;
+    private final VoucherCodeService voucherCodeService;
+    
+    @PostMapping("/batch/create")
+    public ApiResponse<Long> createBatch(@RequestBody VoucherBatchCreateReq req) {
+        Long batchId = voucherBatchService.createBatch(req);
+        return ApiResponse.success(batchId);
+    }
+    
+    @PostMapping("/batch/list")
+    public ApiResponse<Page<VoucherBatchResp>> getBatchList(@RequestBody VoucherBatchQueryReq req) {
+        Page<VoucherBatchResp> page = voucherBatchService.queryBatchList(req);
+        return ApiResponse.success(page);
+    }
+    
+    @GetMapping("/batch/{id}")
+    public ApiResponse<VoucherBatchResp> getBatchDetail(@PathVariable Long id) {
+        VoucherBatchResp batch = voucherBatchService.getBatchDetail(id);
+        return ApiResponse.success(batch);
+    }
+    
+    @GetMapping("/batch/{id}/stats")
+    public ApiResponse<VoucherBatchStatsResp> getBatchStats(@PathVariable Long id) {
+        VoucherBatchStatsResp stats = voucherBatchService.getBatchStats(id);
+        return ApiResponse.success(stats);
+    }
+    
+    @PutMapping("/batch/{id}/status")
+    public ApiResponse<Void> updateBatchStatus(@PathVariable Long id, @RequestParam Integer status) {
+        voucherBatchService.updateBatchStatus(id, status);
+        return ApiResponse.success(null);
+    }
+    
+    @PostMapping("/codes")
+    public ApiResponse<Page<VoucherCodeResp>> getCodeList(@RequestBody VoucherCodeQueryReq req) {
+        Page<VoucherCodeResp> page = voucherCodeService.queryCodeList(req);
+        return ApiResponse.success(page);
+    }
+    
+    @PutMapping("/code/{id}/use")
+    public ApiResponse<Void> markCodeAsUsed(@PathVariable Long id, @RequestParam(required = false) String remark) {
+        voucherCodeService.markCodeAsUsed(id, remark);
+        return ApiResponse.success(null);
+    }
+    
+    @GetMapping("/scenic/{scenicId}/users")
+    public ApiResponse<Page<VoucherCodeResp>> getUsersInScenic(@PathVariable Long scenicId,
+                                                              @RequestParam(defaultValue = "1") Integer pageNum,
+                                                              @RequestParam(defaultValue = "10") Integer pageSize) {
+        VoucherCodeQueryReq req = new VoucherCodeQueryReq();
+        req.setScenicId(scenicId);
+        req.setPageNum(pageNum);
+        req.setPageSize(pageSize);
+        Page<VoucherCodeResp> page = voucherCodeService.queryCodeList(req);
+        return ApiResponse.success(page);
+    }
+    
+    @PostMapping("/mobile/claim")
+    public ApiResponse<VoucherCodeResp> claimVoucher(@RequestBody VoucherClaimReq req) {
+        VoucherCodeResp result = voucherCodeService.claimVoucher(req);
+        return ApiResponse.success(result);
+    }
+    
+    @GetMapping("/mobile/my-codes")
+    public ApiResponse<List<VoucherCodeResp>> getMyVoucherCodes(@RequestParam Long faceId) {
+        List<VoucherCodeResp> codes = voucherCodeService.getMyVoucherCodes(faceId);
+        return ApiResponse.success(codes);
+    }
+}