update

app/Http/Controllers/Admin/CompanyController.php

@@ -299,7 +299,10 @@ class CompanyController extends BaseController
             }
 
             // 当前周期被投企业数（与 courses-home 的 course_signs_invested_current 口径一致）
-            $yearInvestedCompanies = CourseSign::yhInvestedTotal($start_date, $end_date, $course_ids, true);
+            // 当 start_year、end_year 均为空时，不按课程日期过滤，与 courses-home 的 start_date=、end_date= 全周期一致
+            $yearStart = (empty($start_year) && empty($end_year)) ? null : $start_date;
+            $yearEnd = (empty($start_year) && empty($end_year)) ? null : $end_date;
+            $yearInvestedCompanies = CourseSign::yhInvestedTotal($yearStart, $yearEnd, $course_ids, true);
             if ($yearInvestedCompanies) {
                 $yearInvestedCompaniesCollection = collect($yearInvestedCompanies);
                 $statistics['company_invested_year_total'] = $yearInvestedCompaniesCollection->count();

app/Models/CourseSign.php

@@ -173,7 +173,7 @@ class CourseSign extends SoftDeletesModel
     }
 
     /**
-     * 累计被投企业统计
+     * 投企业统计
      * @param string|null $start_date 开始日期
      * @param string|null $end_date 结束日期
      * @param array|null $course_ids 课程ID（仅在自定义时间时生效）