Fix SSE route dependency and align architecture docs

backend/app/api/routes/status.py

@@ -1,28 +1,44 @@
+"""Define API routes for status."""
+
 from fastapi import APIRouter
-from app.core.config import settings
-from app.services.mock_data import MOCK_SYSTEM_STATS, MOCK_SYSTEM_CONFIG
+
+from app.config.settings import settings
+from app.shared.bootstrap import get_document_query_service, get_vector_index
+# Keep route handlers close to their transport-layer wiring for easier auditing.
+
 
 router = APIRouter(prefix="/status", tags=["系统状态"])
 
 
 @router.get("/stats")
 async def get_stats():
-    """获取系统统计"""
-    # 返回预设统计数据
-    return MOCK_SYSTEM_STATS
+    """Return stats."""
+    documents = get_document_query_service().list_documents()
+    indexed = sum(1 for item in documents if item.status.value == "indexed")
+    failed = sum(1 for item in documents if item.status.value == "failed")
+    return {
+        "documents_total": len(documents),
+        "documents_indexed": indexed,
+        "documents_failed": failed,
+        "chunks_total": sum(item.chunk_count for item in documents),
+    }
 
 
 @router.get("/config")
 async def get_config():
-    """获取当前配置"""
-    return MOCK_SYSTEM_CONFIG
+    """Return config."""
+    return {
+        "embedding_model": settings.embedding_model,
+        "embedding_dim": settings.embedding_dim,
+        "embedding_base_url": settings.embedding_base_url,
+        "milvus_collection": settings.milvus_collection,
+        "llm_provider": settings.llm_provider,
+        "llm_model": settings.llm_model,
+        "document_metadata_path": settings.document_metadata_path,
+    }
 
 
 @router.get("/milvus/health")
 async def milvus_health():
-    """Milvus健康检查"""
-    # 模拟连接状态（假数据模式下始终返回连接成功）
-    return {
-        "connected": True,
-        "collections": ["vehicle_regulations"],
-    }
+    """Handle milvus health."""
+    return get_vector_index().health()