[Doc Update] Add type hints to CLI commands

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📝 Documentation Update Needed

A pull request was recently merged that may require documentation updates.

Source PR

• Repository: kubestellar/a2a
• PR: Add type hints to CLI commands a2a#151
• Merged: 2025-12-28T04:59:06Z

PR Summary

This PR significantly improves the CLI by adding comprehensive help messages, type annotations, and enhanced parameter handling. All CLI commands now have detailed help text and docstrings, making them more user-friendly and self-documenting.

Changes Overview

• Added detailed help messages and improved docstrings for all CLI commands (execute, describe, agent, configuration subcommands)
• Enhanced parameter descriptions and usage examples throughout the CLI
• Added validation to prevent conflicting options (--params vs -P) in the execute command
• Introduced type annotations for all CLI command functions
• Improved configuration management commands with explicit help texts
• Enhanced the providers command to display installed LLM providers with default selection highlighted

Files Changed

1 file changed (src/a2a/cli.py) - CLI commands and help system updated with comprehensive improvements

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Action Required: The technical documentation writer agent will review this PR and identify specific documentation pages that need updates, then create a PR with the necessary changes.

/cc @technical-doc-writer

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