feat: add bash shell completions

[adityabhatkar23]

Summary

Adds a new capcut completions bash command that generates a Bash completion script.

This implements the Bash portion of the shell completions issue.

Features

• Completes CLI subcommands

• Completes global flags:

  • --jianying
  • --human
  • --quiet
  • --version

Notes

The issue discussion mentioned leaving --version out until the version flag PR was merged. Since that PR has now been merged into master, the completion script includes --version.

Testing

• Added completion script generation tests
• Verified Bash completion locally
• All tests pass

Documentation

• Added a Shell completions subsection under Commands
• Added Bash completions to the feature checklist

Example

capcut completions bash >> ~/.bashrc

[adityabhatkar23]

@renezander030 Thanks for the review!

I started with Bash as suggested in the issue. If this approach looks good and gets merged, I'd be happy to follow up with separate PRs for Zsh and Fish completions as well, keeping each shell implementation isolated and easy to review.

[renezander030]

Hi Aditya, merged — thanks for the clean contribution. CI was green and the test coverage is exactly right.

Yes please on the separate Zsh and Fish PRs; one per shell is the right call. I've left issue #8 open to track those two.

One small thing for a follow-up (not blocking anything): COMMANDS is a hand-maintained list, so it can drift as new commands land. If you're up for it, a test asserting every entry actually dispatches would keep it honest.

Rene