The log file name should not use the colon character

What version of Codex is running?

0.1.2505171619

Which model were you using?

o4-mini

What platform is your computer?

Microsoft Windows NT 10.0.19045.0 x64

What steps can reproduce the bug?

$env:DEBUG='true'
codex

What is the expected behavior?

The log file should be created successfully.

What do you see instead?

Error: ENOENT: no such file or directory, open 'C:\Users\user\AppData\Local\Temp\oai-codex\codex-cli-2025-05-18T11:08:47.log'
    at Module.writeFileSync (node:fs:2426:20)
    at hD (file:///C:/ProgramData/nvm/v22.14.0/node_modules/@openai/codex/dist/cli.js:163:3080)
    at file:///C:/ProgramData/nvm/v22.14.0/node_modules/@openai/codex/dist/cli.js:1014:771 {
  errno: -4058,
  code: 'ENOENT',
  syscall: 'open',
  path: 'C:\\Users\\user\\AppData\\Local\\Temp\\oai-codex\\codex-cli-2025-05-18T11:08:47.log'
}

Additional information

Don't use the colon character in the filename.

Bug here:
https://github.com/openai/codex/blob/dbc0ad348e520d86893c7df3706f5c3e14b8a809/codex-cli/src/utils/logger/log.ts#L68-L69