refactor(cli): renamed subcommand commands to command

[PRASSamin]

No description provided.

[Copilot]

Pull Request Overview

This PR refactors the CLI to rename the subcommand from commands to command for better consistency and naming clarity. This change improves the user experience by making the command structure more intuitive.

Key changes:

• Renamed the commands subcommand to command in the CLI code
• Updated all documentation references to reflect the new command name
• Added an unreachable return statement in test command

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
cmd/command/root.go	Updated the cobra command definition to use "command" instead of "commands"
README.md	Updated documentation to reflect the new command name in examples and command table
CHANGELOG.md	Added changelog entry for the subcommand rename and reformatted existing entries
dev/cmd/test.go	Added an unreachable return statement after error handling
.github/workflows/ci.yml	Removed push trigger on main branch from CI workflow

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}