feat(cmd): man doc support for ocr on UNIX-like systems

[wu21-web]

Description

feat(cmd): man doc support for ocr on UNIX-like systems

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Refactoring (no functional changes)
• Documentation update
• CI / Build / Tooling

How Has This Been Tested?

• make test passes locally
• Manual testing (describe below)

Checklist

• My code follows the project's coding style (go fmt, go vet)
• I have performed a self-review of my code
• I have added tests that prove my fix is effective or my feature works
• New and existing unit tests pass locally with my changes
• I have updated the documentation accordingly (if applicable)
• I have signed the CLA

Related Issues

N/A

[github-actions]

✅ OpenCodeReview: Review complete: 0 finding(s) across 3 selected item(s).

[wu21-web]

May I request a review from @Qiyuanqiii , thanks!

[Qiyuanqiii]

The man-page generator itself looks solid, and CI is green. I found two installer issues that should be fixed before merge:

1. For custom install prefixes, the script tells users to add the section directory (for example "/.local/share/man/man1") to "MANPATH". "MANPATH" should point to the manual hierarchy root ("/.local/share/man"), with "man1/" beneath it.

2. In the no-sudo fallback, the script tells users that the generated pages are available under "$tmp/man" for manual installation, but "$tmp" is removed by the existing "EXIT" trap as soon as the installer exits. That makes the suggested fallback path unusable.

One small doc suggestion as well: it may be worth clarifying that automatic man-page installation currently applies to "install.sh"; with other installation methods, users can generate the pages manually with "ocr man ".

Once the two installer issues are fixed, I’d be happy to take another look.

[Qiyuanqiii]

I don't see any remaining issues on my end.