refactor: 重构供应商文件类型枚举及相关服务

feat: 为多个服务添加缓存支持
fix: 修复WebSocket任务管理和远程调用异常处理
refactor: 重命名CompanyVendorFileType为VendorFileType
refactor: 优化项目成本导入任务实现
fix: 修复ContractTabSkinBase中的空指针问题
refactor: 统一WebSocket客户端任务调用接口

client/src/main/java/com/ecep/contract/WebSocketClientService.java

@@ -134,7 +134,7 @@ public class WebSocketClientService {
 
         @Override
         public void onFailure(WebSocket webSocket, Throwable t, Response response) {
-            logger.error("WebSocket连接失败: " + t.getMessage());
+            logger.error("WebSocket连接失败: " + t.getMessage() + ", response=" + response, t);
             Platform.runLater(() -> {
                 online.setValue(false);
                 message.set("连接失败: " + t.getMessage());
@@ -179,13 +179,19 @@ public class WebSocketClientService {
             if (webSocket == null) {
                 throw new IllegalStateException("WebSocket is not initialized");
             }
-
+            if (!online.get()) {
+                throw new IllegalStateException("WebSocket is not online");
+            }
             String json = objectMapper.writeValueAsString(msg);
             callbacks.put(msg.getMessageId(), future);
             if (webSocket.send(json)) {
                 logger.debug("send message success:{}", json);
             } else {
-                future.completeExceptionally(new RuntimeException("Failed to send WebSocket message"));
+                if (isActive) {
+                    future.completeExceptionally(new RuntimeException("Failed to send WebSocket message"));
+                } else {
+                    future.completeExceptionally(new RuntimeException("WebSocket is not active"));
+                }
             }
         } catch (Exception e) {
             logger.error("Failed to send WebSocket message: {}", e.getMessage());
@@ -321,14 +327,14 @@ public class WebSocketClientService {
         }
     }
 
-    private void closeSession(WebSocketClientSession session) {
+    public void closeSession(WebSocketClientSession session) {
         if (session != null) {
             sessions.remove(session.getSessionId());
             session.close();
         }
     }
 
-    private WebSocketClientSession createSession() {
+    public WebSocketClientSession createSession() {
         WebSocketClientSession session = new WebSocketClientSession(this);
         sessions.put(session.getSessionId(), session);
         return session;