Mark auto-opt command as deprecated

[shaahji]

Mark auto-opt command as deprecated

Checklist before requesting a review

• Add unit tests for this change.
• Make sure all tests can pass.
• Update documents if necessary.
• Lint and apply fixes to your code by running lintrunner -a
• Is this a user-facing change? If yes, give a description of this change to be included in the release notes.

(Optional) Issue link

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Marks the auto-opt CLI command as deprecated by surfacing a deprecation notice both in --help output and at runtime.

Changes:

• Adds a module-level logger for the command implementation.
• Updates auto-opt subcommand help text to include a deprecation warning.
• Logs a deprecation warning when auto-opt is executed.