docs: sync getting-started guide with CLI commands

[rishi-jat]

Description

Adds missing CLI command sections to getting-started.md to align documentation with the commands currently available in modctl.

[gemini-code-assist]

Summary of Changes

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This pull request enhances the getting-started documentation by incorporating several modctl commands that were previously missing. The update ensures that the guide accurately reflects the full capabilities of the CLI tool, providing users with complete and current information for interacting with model artifacts.

Highlights

• Documentation Update: Added new sections to the getting-started.md guide to include modctl commands for Tag, Inspect, Version, Logout, and Completion.
• CLI Command Alignment: Synchronized the documentation with the currently available commands in the modctl command-line interface, ensuring the guide is up-to-date and comprehensive.

Changelog

• docs/getting-started.md
  • Added documentation for the modctl tag command.
  • Added documentation for the modctl inspect command.
  • Added documentation for the modctl version command.
  • Added documentation for the modctl logout command.
  • Added documentation for the modctl completion command.

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[gemini-code-assist]

Code Review

This pull request adds documentation for several missing modctl CLI commands to the getting-started.md guide, which is a great improvement. The new sections for tag, inspect, version, logout, and completion are clear and provide helpful examples. I have one suggestion regarding the structure of the document to improve its logical flow for new users, which I've detailed in a specific comment.

[Copilot]

Pull request overview

Updates the getting-started documentation to reflect additional modctl CLI commands that are already available in the codebase, improving parity between the guide and the actual CLI surface.

Changes:

• Add documentation sections for tag, inspect, version, logout, and completion.
• Provide basic one-line descriptions and example invocations for each new command.

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