feat(cf): 用户查询接口（团队规模/返佣比例/CF汇总/流水）

cfc-backend/src/main/java/com/etotem/cfc/controller/CfCommissionController.java

@@ -0,0 +1,57 @@
+package com.etotem.cfc.controller;
+
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.etotem.cfc.common.Result;
+import com.etotem.cfc.entity.CfRateTier;
+import com.etotem.cfc.entity.PlatformBalanceLog;
+import com.etotem.cfc.service.CfReferralService;
+import com.etotem.cfc.service.PlatformPointsService;
+import com.etotem.cfc.service.PromotionTierService;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestAttribute;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import javax.annotation.Resource;
+import java.util.HashMap;
+import java.util.Map;
+
+@RestController
+@RequestMapping("/api/commission/cf")
+public class CfCommissionController {
+
+    @Resource
+    private CfReferralService cfReferralService;
+    @Resource
+    private PlatformPointsService platformPointsService;
+    @Resource
+    private PromotionTierService promotionTierService;
+
+    /** 我的团队规模 + 当前返佣比例 + 档位名 */
+    @PostMapping("/rate")
+    public Result<Map<String, Object>> rate(@RequestAttribute("userId") Long userId) {
+        int teamSize = cfReferralService.getTotalTeamSize(userId);
+        CfRateTier tier = cfReferralService.matchRateTier(teamSize);
+        Map<String, Object> data = new HashMap<>();
+        data.put("totalTeamSize", teamSize);
+        data.put("ratePercent", tier == null ? 0 : tier.getRatePercent());
+        data.put("tierName", tier == null ? "未入档" : tier.getTierName());
+        return Result.success(data);
+    }
+
+    /** 我的 CF 钱包汇总 */
+    @PostMapping("/summary")
+    public Result<Map<String, Object>> summary(@RequestAttribute("userId") Long userId) {
+        return Result.success(platformPointsService.getBalance(userId));
+    }
+
+    /** CF 流水（分页） */
+    @PostMapping("/list")
+    public Result<Page<PlatformBalanceLog>> list(@RequestAttribute("userId") Long userId,
+                                                 @RequestBody Map<String, Integer> params) {
+        int page = params.getOrDefault("page", 1);
+        int size = params.getOrDefault("size", 20);
+        return Result.success(platformPointsService.getLogs(userId, page, size));
+    }
+}