feat(oa): add initiator system field to condition branches

Allow __initiator__ contains matching in publish validation and the
flow designer candidate list, excluding it from form useInCondition locks.

Co-authored-by: Cursor <cursoragent@cursor.com>

web-admin/src/views/oa-approval/designer/index.vue

@@ -46,9 +46,6 @@
                       上传
                     </el-button>
                   </el-upload>
-                  <el-button class="btn-ghost" @click="basic.iconUrl = pickRandomOaAppIconUrl()">
-                    换默认
-                  </el-button>
                 </div>
               </el-form-item>
               <el-form-item label="应用名称">
@@ -126,11 +123,11 @@
   import { createDefaultFlow, ensureFlowRoot } from '@/components/oa-approval/flow-tree/types'
   import OaFormDesignerEmbed from '@/components/oa-approval/OaFormDesignerEmbed.vue'
   import {
-    collectConditionReferencedFields,
+    collectFormConditionReferencedFields,
     listConditionCandidates,
     normalizeSchemaConditionRequired
   } from '@/components/oa-approval/oa-condition-fields'
-  import { pickRandomOaAppIconUrl, resolveOaAppIconUrl } from '@/utils/oa-app-icons'
+  import { resolveOaAppIconUrl } from '@/utils/oa-app-icons'
 
   defineOptions({ name: 'OaApprovalDesigner' })
 
@@ -175,7 +172,7 @@
   const flowTreeJson = ref(createDefaultFlow())
 
   const flowConditionFields = computed(() =>
-    Array.from(collectConditionReferencedFields(flowTreeJson.value))
+    Array.from(collectFormConditionReferencedFields(flowTreeJson.value))
   )
   const conditionCandidates = computed(() => listConditionCandidates(formSchema.value))
 
@@ -447,10 +444,10 @@
 
   .oa-designer__icon-preview {
     display: block;
-    width: 48px;
-    height: 48px;
+    width: 80px;
+    height: 80px;
     overflow: hidden;
-    border-radius: 10px;
+    border-radius: 16px;
 
     img {
       display: block;