test: fix duplicate test name and migrate mocha.opts to .mocharc.json

[tedteddy]

Summary

This PR fixes a test naming bug and modernizes the Mocha configuration.

Changes

1. Fix duplicate test name (Bug Fix)

In src/commands/initial/__test__/index.test.ts, line 119 had a duplicate test name:

Before:

it('cli_entire_react checking', function () {  // Wrong name!
  expect(cli_entire_react).to.be.an('object');  // Wrong assertion!
  expect(cli_pc_react.build)...  // Actually testing cli_pc_react

After:

it('cli_pc_react checking', function () {  // Correct name
  expect(cli_pc_react).to.be.an('object');  // Correct assertion
  expect(cli_pc_react.build)...

2. Migrate mocha.opts to .mocharc.json

The mocha.opts file format has been deprecated since Mocha 6.0.0. This PR:

• Creates .mocharc.json with the same configuration
• Updates package.json test script to use the new config
• Removes the deprecated mocha.opts file

New .mocharc.json:

{
  "require": ["ts-node/register"],
  "spec": "src/**/__test__/*.ts",
  "reporter": "spec",
  "timeout": 10000
}

Benefits

• Fixes incorrect test case that was testing the wrong preset
• Uses modern Mocha configuration format
• Adds explicit timeout to prevent hanging tests
• Better IDE support for JSON config files