feat: 重构知识库系统，移除Hermes集成，增强RAG和同步功能

主要变更:
- 移除Hermes智能体及相关回调服务
- 新增知识库RAG、同步、调度、规范化和索引任务服务
- 重构orchestrator服务，增强运行时聊天功能
- 更新前端聊天、政策制度、设置等页面样式和逻辑
- 更新expense_claims和document_intelligence服务
- 删除llm_wiki相关服务和测试文件
- 更新docker-compose配置和启动脚本

server/tests/test_settings_service.py

@@ -64,6 +64,39 @@ def test_probe_azure_embedding_model(monkeypatch) -> None:
     assert captured["payload"]["input"] == "connectivity test"
 
 
+def test_probe_openai_compatible_reranker_model(monkeypatch) -> None:
+    captured: dict[str, object] = {}
+
+    def fake_send_json_request(method, url, *, headers, payload):
+        captured["method"] = method
+        captured["url"] = url
+        captured["headers"] = headers
+        captured["payload"] = payload
+        return 200, {"results": []}
+
+    monkeypatch.setattr("app.services.model_connectivity._send_json_request", fake_send_json_request)
+
+    result = probe_model_connectivity(
+        ModelConnectivityTestRequest(
+            provider="OpenAI Compatible",
+            endpoint="https://api.example.com/v1",
+            model="reranker-v1",
+            api_key="secret",
+            capability="reranker",
+        )
+    )
+
+    assert result.ok is True
+    assert captured["method"] == "POST"
+    assert captured["url"] == "https://api.example.com/v1/rerank"
+    assert captured["headers"]["Authorization"] == "Bearer secret"
+    assert captured["payload"] == {
+        "model": "reranker-v1",
+        "query": "connectivity test",
+        "documents": ["sample document"],
+    }
+
+
 def test_probe_ollama_failure_returns_error_payload(monkeypatch) -> None:
     def fake_send_json_request(method, url, *, headers, payload):
         raise ConnectivityCheckError("模型不存在或尚未拉取。", status_code=404)