Description

Implement a privacy-focused "stealth" opt-out mechanism for the DevIndex application. Users who star a specific repository (e.g., neomjs/devindex-opt-out) should be automatically removed from the index.

Requirements

1. New Service (apps/devindex/services/OptOut.mjs):
   • Query the GraphQL API for stargazers of the designated opt-out repository.
   • Request stargazers sorted by STARRED_AT descending, fetching up to 100 per page.
   • Support pagination (using endCursor) to fetch subsequent pages if a large spike occurs until starredAt is older than lastCheck.
2. State Tracking:
   • Store the timestamp of the last processed star in a new file (e.g., apps/devindex/data/optout-sync.json).
3. Blacklisting Logic:
   • Add newly discovered stargazers to apps/devindex/data/blacklist.json.
   • Remove them from the rich data store (users.jsonl), tracker.json, and failed.json.
4. Pipeline Integration:
   • Run this new OptOut.mjs service at the beginning of the devindex-pipeline.yml workflow.