feat(gxmu): 模块下拉改由模块注册表驱动，审批链每级支持审批人规则

- 新增模块注册表 api 与进程内缓存（首次使用拉一次、并发共用同一个请求），
  启用清单驱动「可新建审批链」的模块下拉与审核列表模块筛选
- reviewFlowConfigEdit 不再维护硬编码模块清单；停用模块的历史配置按
  「标题（已停用）」回显，避免下拉空白
- module → detailKey 的映射收敛到 detailKeyOf 一处，moduleDetailConfig
  未命中注册表时回退 module 本身（停用模块的详情仍可打开）
- 审核流每级新增「审批人规则」输入（USER:<userId> / COLLEGE_ROLE:<roleCode>，
  分号拼装多段，留空沿用「指定人」），随该级提交 reviewerRule 并回显
- 新增 scripts/selfcheck-module-registry.mjs：前端无单测基建时验证下拉过滤、
  detailKey 回退与停用模块回显

src/views/gxmu/reviewFlow/components/reviewFlowEdit.vue

@@ -63,6 +63,12 @@
                 @focus="loadReviewUsers(item.organizationId)"
                 @update:value="updateReviewUser(index, $event)"
               />
+              <a-input
+                allow-clear
+                :value="item.reviewerRule"
+                :placeholder="reviewerRulePlaceholder"
+                @update:value="updateReviewerRule(index, $event)"
+              />
             </div>
             <a-space :size="4">
               <a-button
@@ -109,6 +115,8 @@
   interface ReviewFlowItem {
     organizationId?: number;
     reviewUserId?: number;
+    // 审批人规则：';' 分隔可拼装多段，USER:<userId> / COLLEGE_ROLE:<roleCode>
+    reviewerRule?: string;
   }
 
   interface ReviewFlowForm extends Omit<ReviewFlow, 'reviewUserId'> {
@@ -148,6 +156,9 @@
   const reviewUserOptionsMap = ref<Record<number, User[]>>({});
   const reviewUserLoadingMap = ref<Record<number, boolean>>({});
   const reviewUserNameMap = ref<Record<number, string>>({});
+  // 审批人规则语法见 docs/adr/0006-approval-chain-convergence.md
+  const reviewerRulePlaceholder =
+    '审批人规则：USER:12 或 COLLEGE_ROLE:COLLEGE_LEAGUE_SECRETARY，可用 ; 拼装多段，留空沿用「指定人」';
 
   // 用户信息
   const form = reactive<ReviewFlowForm>({
@@ -190,9 +201,13 @@
       },
       {
         validator: async () => {
-          const invalid = form.flowItems.some((item) => !item.reviewUserId);
+          const invalid = form.flowItems.some(
+            (item) => !item.reviewUserId && !item.reviewerRule?.trim()
+          );
           if (invalid) {
-            return Promise.reject(new Error('请为每一级选择审核人'));
+            return Promise.reject(
+              new Error('请为每一级选择审核人或填写审批人规则')
+            );
           }
           return Promise.resolve();
         },
@@ -357,6 +372,12 @@
     syncOrganizationIds();
   };
 
+  const updateReviewerRule = (index: number, reviewerRule?: string) => {
+    const items = [...form.flowItems];
+    items[index] = { ...items[index], reviewerRule };
+    form.flowItems = items;
+  };
+
   const getSortedFlows = () => {
     if (props.data?.flows?.length) {
       return [...props.data.flows].sort(
@@ -399,6 +420,7 @@
             title: form.title,
             organizationId: item.organizationId,
             reviewUserId: item.reviewUserId,
+            reviewerRule: item.reviewerRule?.trim() || undefined,
             level: index + 1
           };
           delete (formData as ReviewFlow & { organizationIds?: number[] })
@@ -452,7 +474,8 @@
             .filter((item) => typeof item.organizationId === 'number')
             .map((item) => ({
               organizationId: item.organizationId,
-              reviewUserId: item.reviewUserId
+              reviewUserId: item.reviewUserId,
+              reviewerRule: item.reviewerRule
             }));
           syncOrganizationIds();
           await preloadReviewUsers();
@@ -503,7 +526,10 @@
   }
 
   .flow-step-reviewer {
-    width: 220px;
+    display: flex;
+    flex-direction: column;
+    gap: 6px;
+    width: 320px;
     flex-shrink: 0;
   }
 </style>