CodeRabbit Generated Unit Tests: Add unit tests for PR changes

[coderabbitai]

Unit test generation was requested by @fixcik.

• feat: add --pr option to batch commands for git worktree support #5 (comment)

The following files were modified:

• package-lock.json
• src/cli.test.ts
• src/commands/mark.test.ts
• src/commands/reply.test.ts
• src/commands/resolve.test.ts

[coderabbitai]

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