fix: 医生下拉关联真实用户 + 清理脏数据 + 3D查看器

修复:
- 医生下拉改为调用/system/user/list获取所有活跃用户
- 新建任务表单filterable选择真实医生
- 清理测试产生的脏数据(7个CANCELLED任务+5个测试报告)
- 修复卡住的PROCESSING任务(改为CANCELLED)

医生列表:
- 显示所有活跃用户的nickName+userName
- 支持搜索过滤

MD/test/reports/07_full_chain_report.json

@@ -1,5 +1,5 @@
 {
-  "test_time": "2026-06-08T09:11:33.934379",
+  "test_time": "2026-06-08T11:20:49.248056",
   "environment": "http://localhost:18082/healthlink-his",
   "total": 125,
   "passed": 125,
@@ -167,7 +167,7 @@
       "id": "OP-PHARM",
       "name": "待发药列表",
       "ok": true,
-      "detail": "待发药=534"
+      "detail": "待发药=532"
     },
     {
       "id": "OP-WEST",
@@ -377,13 +377,13 @@
       "id": "INS-3D",
       "name": "3D重建任务",
       "ok": true,
-      "detail": "任务=0"
+      "detail": "任务=14"
     },
     {
       "id": "INS-3D-RPT",
       "name": "3D重建报告",
       "ok": true,
-      "detail": "报告=0"
+      "detail": "报告=11"
     },
     {
       "id": "INS-RAD-RPT",
@@ -695,7 +695,7 @@
       "id": "MR-05-PHARM",
       "name": "药师→待发药",
       "ok": true,
-      "detail": "待发药=534"
+      "detail": "待发药=532"
     },
     {
       "id": "MR-06-CHARGE",