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/components/oa-approval/flow-tree/ConditionRuleEditor.vue

@@ -48,7 +48,7 @@
             />
           </el-select>
           <el-select
-            v-if="isPersonField(rule.field)"
+            v-if="isPersonLikeField(rule.field)"
             :model-value="personValueIds(rule.value)"
             multiple
             filterable
@@ -152,8 +152,9 @@
     return props.candidates.find((c) => c.field === field)
   }
 
-  function isPersonField(field: string) {
-    return meta(field)?.type === 'person'
+  function isPersonLikeField(field: string) {
+    const t = meta(field)?.type
+    return t === 'person' || t === 'initiator'
   }
 
   function personValueIds(v: unknown): string[] {
@@ -163,7 +164,7 @@
   }
 
   function defaultValueForType(type: string, opts?: ConditionCandidate['options']) {
-    if (type === 'person') return [] as string[]
+    if (type === 'person' || type === 'initiator') return [] as string[]
     return opts?.[0]?.value ?? ''
   }
 
@@ -285,13 +286,13 @@
   }
 
   onMounted(() => {
-    if (props.candidates.some((c) => c.type === 'person')) {
+    if (props.candidates.some((c) => c.type === 'person' || c.type === 'initiator')) {
       loadUsers()
     }
   })
 
   watch(
-    () => props.candidates.some((c) => c.type === 'person'),
+    () => props.candidates.some((c) => c.type === 'person' || c.type === 'initiator'),
     (need) => {
       if (need && !userOptions.value.length) loadUsers()
     }