Improve CLI command descriptions and usability

[gmarav05]

This PR improves modctl CLI usability by improving command descriptions, fixing grammar issues.

No functional behavior is changed.

Fixes #247

Before

After

[gemini-code-assist]

Summary of Changes

Hello @gmarav05, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on enhancing the user experience of the modctl command-line interface by refining the descriptions of its various commands. The changes aim to provide clearer, more concise, and grammatically correct explanations for each command's function, thereby improving overall usability without altering any functional behavior of the tool.

Highlights

• Improved CLI Command Descriptions: The Short descriptions for several modctl CLI commands have been updated for clarity, conciseness, and grammatical correctness.
• Enhanced Usability: Specific commands like list, prune, tag, and upload now have more intuitive and informative descriptions, making the CLI easier to understand and use.
• Grammar and Phrasing Corrections: Grammatical errors and awkward phrasing in command descriptions have been fixed across multiple files, including cmd/root.go and cmd/tag.go.

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Changelog

• cmd/list.go
  • Updated the Short description for the list command from "List will lists the current built model artifacts from local storage." to "List model artifacts currently stored locally." for improved conciseness.
• cmd/prune.go
  • Modified the Short description for the prune command to "Prune removes unused manifests and blobs from local storage (destructive operation)." from "Prune can help to cleanup useless manifests and blobs in the local storage.", adding important context about its destructive nature.
• cmd/root.go
  • Refined the Short description for the root command to "A command-line tool for managing artifacts bundled according to the ModelPack Specification." from "A command line tool for managing artifact bundled based on the ModelPack Specification", improving grammar and phrasing.
• cmd/tag.go
  • Updated the Short description for the tag command to "Tag one model artifact as another without rebuilding." from "Tag can tag one model artifact to another one without rebuiding.", correcting a typo and making it more direct.
• cmd/upload.go
  • Significantly shortened and clarified the Short description for the upload command to "Pre-upload a file to a remote repository to speed up later builds." from a lengthy and less clear explanation.

Activity

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[gemini-code-assist]

Code Review

This pull request improves the usability of the modctl CLI by refining command descriptions. The changes fix grammatical errors and typos, and make the help texts more concise and clear. Overall, these are great improvements. I have one minor suggestion to further improve consistency across the command descriptions.

[gemini-code-assist]

For consistency with other command descriptions in this CLI (e.g., tag, upload), it's better to start with a verb in the imperative mood. This makes the descriptions more direct and uniform.

Suggested change

	Short: "Prune removes unused manifests and blobs from local storage (destructive operation).",
	Short: "Remove unused manifests and blobs from local storage (destructive operation).",