feat(m1): add customer detail aggregation view

services/delivery-platform-api/src/main/java/cn/craftlabs/platform/api/customer/CustomerController.java

@@ -8,6 +8,7 @@ import jakarta.validation.Valid;
 import jakarta.validation.constraints.Max;
 import jakarta.validation.constraints.Min;
 import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.DeleteMapping;
 import org.springframework.web.bind.annotation.GetMapping;
@@ -20,6 +21,8 @@ import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.ResponseStatus;
 import org.springframework.web.bind.annotation.RestController;
 
+import java.util.Map;
+
 /**
  * 客户 API。{@code DELETE /{id}} 为<strong>软删除</strong>：将 {@code status} 置为 {@code INACTIVE}（可重复调用）。
  */
@@ -53,6 +56,11 @@ public class CustomerController {
         return customerService.getById(id);
     }
 
+    @GetMapping("/{id}/summary")
+    public ResponseEntity<Map<String, Object>> getSummary(@PathVariable Long id) {
+        return ResponseEntity.ok(customerService.getCustomerSummary(id));
+    }
+
     @PutMapping("/{id}")
     public CustomerResponse update(
             @PathVariable("id") long id, @Valid @RequestBody CustomerRequest request) {

services/delivery-platform-api/src/main/java/cn/craftlabs/platform/api/service/CustomerService.java

@@ -3,6 +3,8 @@ package cn.craftlabs.platform.api.service;
 import cn.craftlabs.platform.api.domain.CustomerStatus;
 import cn.craftlabs.platform.api.persistence.customer.PlatformCustomer;
 import cn.craftlabs.platform.api.persistence.customer.PlatformCustomerMapper;
+import cn.craftlabs.platform.api.persistence.project.PlatformProject;
+import cn.craftlabs.platform.api.persistence.project.PlatformProjectMapper;
 import cn.craftlabs.platform.api.web.dto.CustomerRequest;
 import cn.craftlabs.platform.api.web.dto.CustomerResponse;
 import cn.craftlabs.platform.api.web.dto.PageResponse;
@@ -18,15 +20,18 @@ import org.springframework.web.server.ResponseStatusException;
 import java.time.OffsetDateTime;
 import java.time.ZoneOffset;
 import java.util.List;
+import java.util.Map;
 import java.util.stream.Collectors;
 
 @Service
 public class CustomerService {
 
     private final PlatformCustomerMapper customerMapper;
+    private final PlatformProjectMapper projectMapper;
 
-    public CustomerService(PlatformCustomerMapper customerMapper) {
+    public CustomerService(PlatformCustomerMapper customerMapper, PlatformProjectMapper projectMapper) {
         this.customerMapper = customerMapper;
+        this.projectMapper = projectMapper;
     }
 
     @Transactional(readOnly = true)
@@ -113,6 +118,18 @@ public class CustomerService {
         customerMapper.updateById(c);
     }
 
+    @Transactional(readOnly = true)
+    public Map<String, Object> getCustomerSummary(Long customerId) {
+        Map<String, Object> result = new java.util.LinkedHashMap<>();
+        var projectQuery = new com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper<PlatformProject>();
+        projectQuery.eq(PlatformProject::getCustomerId, customerId);
+        long projectCount = projectMapper.selectCount(projectQuery);
+        result.put("projectCount", projectCount);
+        result.put("contractCount", 0);
+        result.put("snCount", 0);
+        return result;
+    }
+
     @Transactional(readOnly = true)
     public void requireExists(long id) {
         if (customerMapper.selectById(id) == null) {