feat(mcp): add smart JSON parser for flexible input formats

Support multiple MCP configuration input formats:
- Pure config object: { "command": "npx", ... }
- Key-value pair fragment: "server-name": { "command": "npx", ... }
- Wrapped object: { "server-name": { "command": "npx", ... } }

The parser automatically:
- Detects and wraps JSON fragments into complete objects
- Extracts server name from single-key objects
- Auto-fills ID and Name fields when applicable
- Formats the config for display

This improves UX by allowing users to paste configs directly from
.claude.json or .codex/config.toml without manual editing.

src/components/mcp/McpFormModal.tsx

@@ -27,7 +27,7 @@ import {
   mcpServerToToml,
 } from "@/utils/tomlUtils";
 import { normalizeTomlText } from "@/utils/textNormalization";
-import { formatJSON } from "@/utils/formatters";
+import { formatJSON, parseSmartMcpJson } from "@/utils/formatters";
 import { useMcpValidation } from "./useMcpValidation";
 import { useUpsertMcpServer } from "@/hooks/useMcp";
 
@@ -241,15 +241,41 @@ const McpFormModal: React.FC<McpFormModalProps> = ({
         }
       }
     } else {
-      // JSON validation (use hook's complete validation)
-      const err = validateJsonConfig(value);
-      if (err) {
-        setConfigError(err);
-        return;
+      // JSON validation with smart parsing
+      try {
+        const result = parseSmartMcpJson(value);
+
+        // 验证解析后的配置对象
+        const configJson = JSON.stringify(result.config);
+        const validationErr = validateJsonConfig(configJson);
+
+        if (validationErr) {
+          setConfigError(validationErr);
+          return;
+        }
+
+        // 自动填充提取的 id（仅当表单 id 为空且不在编辑模式时）
+        if (result.id && !formId.trim() && !isEditing) {
+          const uniqueId = ensureUniqueId(result.id);
+          setFormId(uniqueId);
+
+          // 如果 name 也为空，同时填充 name
+          if (!formName.trim()) {
+            setFormName(result.id);
+          }
+        }
+
+        // 如果智能解析提取了配置（格式转换），自动格式化输入框内容
+        if (result.id && result.formattedConfig !== value.trim()) {
+          setFormConfig(result.formattedConfig);
+        }
+
+        setConfigError("");
+      } catch (err: any) {
+        const errorMessage = err?.message || String(err);
+        setConfigError(t("mcp.error.jsonInvalid") + ": " + errorMessage);
       }
     }
-
-    setConfigError("");
   };
 
   const handleFormatJson = () => {