Problem

Duplicate issues marked with "potential-duplicate" need to be automatically processed after their grace period expires.

Proposed Solution

Create a new command and a scheduled GitHub Actions workflow to handle the final closure of confirmed duplicates.

New CLI Command:

• simili auto-close:
  • Scans issues with the potential-duplicate label.
  • Checks if the cooldown period (defined in Enhancement: Two-phase duplicate detection with cooldown period #54) has passed.
  • Verifies no human activity has occurred (Enhancement: Human activity detection for duplicate review #55).
  • If eligible, closes the issue and swaps the label to duplicate.

Scheduled Workflow:

• Create a cron-based workflow (e.g., daily at 10 AM UTC) that runs the auto-close command.
• Should support manual workflow_dispatch for testing.

Related Issues

• Enhancement: Two-phase duplicate detection with cooldown period #54: Two-phase duplicate detection with cooldown period
• Enhancement: Human activity detection for duplicate review #55: Human activity detection for duplicate review