Migrate CLI argument parsing from flag + manual os.Args dispatch to cobra

[timharek]

The manual approach required hand-written help text, per-command argument validation, and had inconsistent error handling (mix of fmt.Printf, cobra.CheckErr, direct returns). Cobra handles all of this uniformly.

What changed

• Split monolithic main() into per-command files (config.go, discs.go, automations.go, history.go)
• All commands use RunE with errors returned to cobra for consistent formatting
• Auto-generated help text and flag parsing — no more hand-written usage output
• Removed doc.go (referenced old -c, -d, -q, -e, -v flags that no longer exist)
• Adds one dependency: github.com/spf13/cobra

User-visible differences

• Help output is now auto-generated by cobra (different formatting)
• Errors print as Error: <message> via cobra instead of ad-hoc fmt.Printf calls
• Flags now have long forms (--discs, --automations) in addition to the existing short forms (-d, -a)
• Built-in autocompletion with handymkv completion

Trade-off

This adds a dependency to a previously zero-dependency project. I fully understand if that's not something you want — happy to close this if so.

Thank you

Thank you for handymkv, I discovered it on Hacker News last week and I finally got to use it today. Now I want to contribute back! I also want to create a retry/redo command that let's you redo something from your history, if you have updated your config or similar.

[dmars8047]

Hello!

First off, thanks so much for your interest in the project. It really means a lot that people are interested in helping and making the project better.

I'd really like to keep this project free of dependencies if possible. Its just a design philosophy of mine that introducing dependencies on other projects should be avoided unless the value they are adding outweighs the risk of adding that dependency. Unfortunately, I don't really see that here.

With that said, I do like that retry/redo idea. It would be pretty useful when benchmarking runs against one another. That is most of the reason I created that feature. I envisioned people tweaking their encoding settings and then weighing the results/run times against each other. Please feel free to send me a PR or open up a feature request via an issue and then i'll assign it to you after we talk it out.

Thanks so much and have a great day!

[timharek]

Thank you for replying! It makes complete sense! 👌

I'm going continue on my own fork then, but I want to maintain feature-comparatity with your project.

Since I made the PR yesterday, I managed to get retry/redo working, so I'm gonna put a new PR with that, so you can fit in the command style as you see fit 😊

[timharek]

Added the new PR now #12