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/__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 = {}) => {