feat: 接入一库一工具知识检索

- 编译知识库英文运行名、描述、检索配置和独立 Registration

- 统一最终分数阈值并保持模型上下文、检索事件与引用一致

- 完善 AG-UI 知识库检索运行态与完成态展示

easyflow-ui-admin/app/src/views/ai/shared/agent-agui/projection.ts

@@ -3,6 +3,7 @@ import type {
   ChatTimelineKnowledgeHit,
   ChatTimelineMessageItem,
   ChatTimelineSkillInvocationStatus,
+  ChatTimelineStatusStatus,
   ChatTimelineToolStatus,
 } from '@easyflow/common-ui';
 
@@ -131,6 +132,13 @@ function asyncToolStatus(
   return 'running';
 }
 
+function knowledgeRetrievalStatus(value: unknown): ChatTimelineStatusStatus {
+  const status = asText(value).trim().toLowerCase();
+  if (status === 'running') return 'running';
+  if (status === 'error' || status === 'failed') return 'error';
+  return 'done';
+}
+
 function statusKey(
   payload: Record<string, unknown>,
   options: AguiTimelineProjectionOptions,
@@ -275,7 +283,7 @@ function applyCustomEvent(
   if (event.name === easyFlowAguiCustomEvent.knowledgeRetrievalStatus) {
     ChatTimelineBuilder.upsertKnowledgeRetrievalStatus(
       items,
-      asText(payload.status).toLowerCase() === 'running' ? 'running' : 'done',
+      knowledgeRetrievalStatus(payload.status),
       statusKey(payload, options, 'knowledge-retrieval'),
       turnMetadata,
     );