feat: 新增预算费控模型与报销审批流引擎

后端新增预算费控服务和报销单审批流模块，引入申请人费用画像
算法，优化知识库 RAG 运行时和同步逻辑，完善报销单工作流常
量和明细同步，更新差旅报销规则电子表格，前端新增预算分析
组件和数字员工模型，完善审批对话框和洞察面板交互，优化侧
边栏和顶栏样式，补充单元测试。

server/tests/test_knowledge_sync.py

@@ -0,0 +1,65 @@
+from __future__ import annotations
+
+from sqlalchemy import create_engine
+from sqlalchemy.orm import Session, sessionmaker
+from sqlalchemy.pool import StaticPool
+
+from app.api.deps import CurrentUserContext
+from app.db.base import Base
+from app.services.knowledge import KNOWLEDGE_INGEST_STATUS_INGESTED, KnowledgeService
+from app.services.knowledge_sync import KnowledgeSyncDispatchService
+
+
+def build_session() -> Session:
+    engine = create_engine(
+        "sqlite+pysqlite:///:memory:",
+        connect_args={"check_same_thread": False},
+        poolclass=StaticPool,
+    )
+    Base.metadata.create_all(bind=engine)
+    session_factory = sessionmaker(bind=engine, autoflush=False, autocommit=False)
+    return session_factory()
+
+
+def test_force_sync_queues_ingested_documents_and_creates_hermes_run(tmp_path, monkeypatch) -> None:
+    submitted: list[dict[str, object]] = []
+    user = CurrentUserContext(
+        username="admin",
+        name="管理员",
+        role_codes=["manager"],
+        is_admin=True,
+    )
+
+    with build_session() as db:
+        knowledge_service = KnowledgeService(storage_root=tmp_path, db=db)
+        uploaded = knowledge_service.upload_document("报销制度", "demo.txt", b"hello", user)
+        document_id = uploaded.id
+        knowledge_service.set_document_ingest_statuses(
+            [document_id],
+            KNOWLEDGE_INGEST_STATUS_INGESTED,
+            agent_run_id="run_previous",
+        )
+        monkeypatch.setattr(
+            "app.services.knowledge_rag.KnowledgeRagService.get_document_status_map",
+            lambda self, _document_ids: {},
+        )
+        monkeypatch.setattr(
+            "app.services.knowledge_sync.knowledge_index_task_manager.submit_sync",
+            lambda **kwargs: submitted.append(kwargs),
+        )
+
+        dispatch_service = KnowledgeSyncDispatchService(db)
+        dispatch_service.knowledge_service = knowledge_service
+
+        result = dispatch_service.queue_sync(
+            current_user=user,
+            folder=None,
+            document_ids=[document_id],
+            force=True,
+            changed_only=True,
+        )
+
+        assert result.agent_run_id.startswith("run_")
+        assert document_id in result.document_ids
+        assert submitted
+        assert submitted[0]["agent_run_id"] == result.agent_run_id