feat: 知识图谱状态增加实体/关系数量统计

- KnowledgeGraphRepository 新增 count_by_db_id 方法
- MilvusGraphService.get_status 返回 entity_count 和 relationship_count
- 知识图谱管理面板展示实体与关系计数
- 修复重置按钮在构建中不可见的问题
- 调整默认并发数为 50

Co-authored-by: xerrors <xerrors@qq.com>

backend/package/yuxi/knowledge/graphs/milvus_graph_service.py

@@ -70,11 +70,13 @@ class MilvusGraphService:
         kb = await self._get_milvus_kb(db_id)
         params = dict(kb.additional_params or {})
         config = params.get(GRAPH_CONFIG_KEY) or {}
-        total_chunks, pending_chunks, indexed_chunks = await asyncio.gather(
+        total_chunks, pending_chunks, indexed_chunks, graph_counts = await asyncio.gather(
             self.chunk_repo.count_by_db_id(db_id),
             self.chunk_repo.count_graph_pending_by_db_id(db_id),
             self.chunk_repo.count_graph_indexed_by_db_id(db_id),
+            self.graph_repo.count_by_db_id(db_id),
         )
+        entity_count, relationship_count = graph_counts
 
         build_task_status = None
         build_task_progress = 0
@@ -106,6 +108,8 @@ class MilvusGraphService:
             "total_chunks": total_chunks,
             "pending_chunks": pending_chunks,
             "indexed_chunks": indexed_chunks,
+            "entity_count": entity_count,
+            "relationship_count": relationship_count,
             "build_task_status": build_task_status,
             "build_task_progress": build_task_progress,
         }

backend/package/yuxi/repositories/knowledge_graph_repository.py

@@ -15,6 +15,16 @@ from yuxi.storage.postgres.models_knowledge import (
 
 
 class KnowledgeGraphRepository:
+    async def count_by_db_id(self, db_id: str) -> tuple[int, int]:
+        async with pg_manager.get_async_session_context() as session:
+            entity_count = await session.scalar(
+                select(func.count()).select_from(KnowledgeGraphEntity).where(KnowledgeGraphEntity.db_id == db_id)
+            )
+            triple_count = await session.scalar(
+                select(func.count()).select_from(KnowledgeGraphTriple).where(KnowledgeGraphTriple.db_id == db_id)
+            )
+            return int(entity_count or 0), int(triple_count or 0)
+
     async def upsert_chunk_graph(
         self,
         *,

backend/test/unit/graphs/test_milvus_graph_build.py

@@ -114,7 +114,8 @@ async def test_milvus_graph_service_configure_persists_updated_concurrency():
         count_graph_pending_by_db_id=AsyncMock(return_value=0),
         count_graph_indexed_by_db_id=AsyncMock(return_value=0),
     )
-    service = MilvusGraphService(kb_repo=Repo(), chunk_repo=chunk_repo)
+    graph_repo = SimpleNamespace(count_by_db_id=AsyncMock(return_value=(3, 2)))
+    service = MilvusGraphService(kb_repo=Repo(), chunk_repo=chunk_repo, graph_repo=graph_repo)
 
     await service.configure(
         "kb_test",
@@ -125,6 +126,8 @@ async def test_milvus_graph_service_configure_persists_updated_concurrency():
     status = await service.get_status("kb_test")
 
     assert status["config"]["extractor_options"]["concurrency_count"] == 9
+    assert status["entity_count"] == 3
+    assert status["relationship_count"] == 2
 
 
 def test_milvus_graph_service_writes_chunk_entity_and_relation():

web/src/components/KnowledgeGraphSection.vue

@@ -157,6 +157,14 @@
                   <span class="stat-value">{{ graphBuildStatus?.indexed_chunks ?? '-' }}</span>
                   <span class="stat-label">已构建</span>
                 </div>
+                <div class="stat-item">
+                  <span class="stat-value">{{ graphBuildStatus?.entity_count ?? '-' }}</span>
+                  <span class="stat-label">实体</span>
+                </div>
+                <div class="stat-item">
+                  <span class="stat-value">{{ graphBuildStatus?.relationship_count ?? '-' }}</span>
+                  <span class="stat-label">关系</span>
+                </div>
               </div>
               <div class="build-actions">
                 <a-button
@@ -202,7 +210,7 @@
                   >
                     修改配置
                   </a-button>
-                  <a-button size="small" type="text" danger @click="confirmResetGraph">重置</a-button>
+                  <a-button size="small" type="text" danger v-if="!isBuildActive" @click="confirmResetGraph">重置</a-button>
                 </div>
               </div>
             </div>
@@ -412,7 +420,7 @@ const graphConfigForm = reactive({
   extractor_type: 'llm',
   model_spec: '',
   schema: '',
-  concurrency_count: 5,
+  concurrency_count: 50,
   model_params_text: '',
   spacy_model: 'zh_core_web_sm',
   entity_labels_text: ''