refactor(json): Consolidate JSON utilities and type definitions

Modified files:
- client/src/components/DynamicJsonForm.tsx
- client/src/components/JsonView.tsx
- client/src/components/ToolsTab.tsx
- client/src/components/__tests__/DynamicJsonForm.test.tsx
- client/src/utils/__tests__/jsonPathUtils.test.ts → client/src/utils/__tests__/jsonUtils.test.ts
- client/src/utils/__tests__/schemaUtils.test.ts
- client/src/utils/jsonPathUtils.ts → client/src/utils/jsonUtils.ts
- client/src/utils/schemaUtils.ts

Descriptions:
- Move JSON type definitions from DynamicJsonForm to centralized jsonUtils
- Consolidate utility functions (getDataType, tryParseJson) into jsonUtils
- Rename jsonPathUtils to jsonUtils for better semantic clarity
- Add comprehensive test coverage for new utility functions
- Update imports across all affected components
- Improve type references consistency throughout the codebase

client/src/components/DynamicJsonForm.tsx

@@ -3,33 +3,9 @@ import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
 import JsonEditor from "./JsonEditor";
-import { updateValueAtPath, JsonObject } from "@/utils/jsonPathUtils";
+import { updateValueAtPath } from "@/utils/jsonUtils";
 import { generateDefaultValue, formatFieldLabel } from "@/utils/schemaUtils";
-
-export type JsonValue =
-  | string
-  | number
-  | boolean
-  | null
-  | undefined
-  | JsonValue[]
-  | { [key: string]: JsonValue };
-
-export type JsonSchemaType = {
-  type:
-    | "string"
-    | "number"
-    | "integer"
-    | "boolean"
-    | "array"
-    | "object"
-    | "null";
-  description?: string;
-  required?: boolean;
-  default?: JsonValue;
-  properties?: Record<string, JsonSchemaType>;
-  items?: JsonSchemaType;
-};
+import type { JsonValue, JsonSchemaType, JsonObject } from "@/utils/jsonUtils";
 
 interface DynamicJsonFormProps {
   schema: JsonSchemaType;

client/src/components/JsonView.tsx

@@ -1,9 +1,10 @@
 import { useState, memo, useMemo, useCallback, useEffect } from "react";
-import { JsonValue } from "./DynamicJsonForm";
+import type { JsonValue } from "@/utils/jsonUtils";
 import clsx from "clsx";
 import { Copy, CheckCheck } from "lucide-react";
 import { Button } from "@/components/ui/button";
 import { useToast } from "@/hooks/use-toast";
+import { getDataType, tryParseJson } from "@/utils/jsonUtils";
 
 interface JsonViewProps {
   data: unknown;
@@ -13,21 +14,6 @@ interface JsonViewProps {
   withCopyButton?: boolean;
 }
 
-function tryParseJson(str: string): { success: boolean; data: JsonValue } {
-  const trimmed = str.trim();
-  if (
-    !(trimmed.startsWith("{") && trimmed.endsWith("}")) &&
-    !(trimmed.startsWith("[") && trimmed.endsWith("]"))
-  ) {
-    return { success: false, data: str };
-  }
-  try {
-    return { success: true, data: JSON.parse(str) };
-  } catch {
-    return { success: false, data: str };
-  }
-}
-
 const JsonView = memo(
   ({
     data,
@@ -119,23 +105,15 @@ interface JsonNodeProps {
 const JsonNode = memo(
   ({ data, name, depth = 0, initialExpandDepth }: JsonNodeProps) => {
     const [isExpanded, setIsExpanded] = useState(depth < initialExpandDepth);
-
-    const getDataType = (value: JsonValue): string => {
-      if (Array.isArray(value)) return "array";
-      if (value === null) return "null";
-      return typeof value;
-    };
-
-    const dataType = getDataType(data);
-
-    const typeStyleMap: Record<string, string> = {
+    const [typeStyleMap] = useState<Record<string, string>>({
       number: "text-blue-600",
       boolean: "text-amber-600",
       null: "text-purple-600",
       undefined: "text-gray-600",
       string: "text-green-600 break-all whitespace-pre-wrap",
       default: "text-gray-700",
-    };
+    });
+    const dataType = getDataType(data);
 
     const renderCollapsible = (isArray: boolean) => {
       const items = isArray

client/src/components/ToolsTab.tsx

@@ -5,7 +5,8 @@ import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
 import { TabsContent } from "@/components/ui/tabs";
 import { Textarea } from "@/components/ui/textarea";
-import DynamicJsonForm, { JsonSchemaType, JsonValue } from "./DynamicJsonForm";
+import DynamicJsonForm from "./DynamicJsonForm";
+import type { JsonValue, JsonSchemaType } from "@/utils/jsonUtils";
 import { generateDefaultValue } from "@/utils/schemaUtils";
 import {
   CallToolResultSchema,

client/src/components/__tests__/DynamicJsonForm.test.tsx

@@ -1,7 +1,7 @@
 import { render, screen, fireEvent } from "@testing-library/react";
 import { describe, it, expect, jest } from "@jest/globals";
 import DynamicJsonForm from "../DynamicJsonForm";
-import type { JsonSchemaType } from "../DynamicJsonForm";
+import type { JsonSchemaType } from "@/utils/jsonUtils";
 
 describe("DynamicJsonForm String Fields", () => {
   const renderForm = (props = {}) => {