[BUG] code-review plugin posts to GitHub by default, contradicting documented behavior

Bug Description

The code-review plugin posts comments to GitHub by default, which contradicts the documented behavior in the plugin's README.

Expected Behavior (per README)

According to plugins/code-review/README.md:

• Default: /code-review should output to terminal only, NOT post to GitHub
• Opt-in: Only /code-review --comment should post to the PR

Options: - --comment: Post the review as a comment on the pull request (default: outputs to terminal only)

Actual Behavior

Running /code-review (without --comment flag) automatically posts the review as a comment on the PR.

Root Cause

The skill prompt instructs Claude to always "use the gh bash command to comment back on the pull request" regardless of whether the --comment flag was provided. The prompt does not check for or respect the --comment flag.

Suggested Fix

Update the skill prompt to:

1. Check if --comment flag was provided
2. If no flag: output the review to terminal only
3. If --comment flag present: post to GitHub

Reproduction Steps

1. Check out a branch with an open PR
2. Run /code-review (without --comment)
3. Observe that a comment is posted to the PR (unexpected)

Environment

• Claude Code CLI with code-review plugin installed