fix: 修复Claude模型禁用tools和跳过禁用节点健康检查

当模型是Claude时，禁止使用tools配置
在UI API请求处理中跳过已禁用节点的健康检查

src/gemini/antigravity-core.js

@@ -289,6 +289,16 @@ function geminiToAntigravity(modelName, payload, projectId) {
     }
     template.request.toolConfig.functionCallingConfig.mode = 'VALIDATED';
 
+    // 当模型是 Claude 时，禁止使用 tools
+    if (isClaudeModel) {
+        if (template.request.tools) {
+            delete template.request.tools;
+        }
+        if (template.request.toolConfig) {
+            delete template.request.toolConfig;
+        }
+    }
+
     // 对于非 Claude 模型，删除 maxOutputTokens
     // Claude 模型需要保留 maxOutputTokens
     if (!isClaudeModel) {

src/ui-manager.js

@@ -1313,6 +1313,13 @@ export async function handleUIApiRequests(method, pathParam, req, res, currentCo
             const results = [];
             for (const providerStatus of providers) {
                 const providerConfig = providerStatus.config;
+                
+                // 跳过已禁用的节点
+                if (providerConfig.isDisabled) {
+                    console.log(`[UI API] Skipping health check for disabled provider: ${providerConfig.uuid}`);
+                    continue;
+                }
+
                 try {
                     // 传递 forceCheck = true 强制执行健康检查，忽略 checkHealth 配置
                     const healthResult = await providerPoolManager._checkProviderHealth(providerType, providerConfig, true);