Feat: Discovery Engine - The Spider

[tobiu]

This task focuses on implementing the "Spider" discovery mechanism to expand the contributor index beyond the top repositories.

Requirements

1. Spider Logic: Update gh_discovery.mjs to traverse the following graph of the initial "seed" candidates.
2. Depth Control: Implement a depth limit (e.g., 1 or 2 layers) to prevent infinite crawling.
3. Filtration: Apply a "Pulse Check" (e.g., >50 contributions in current year) before performing a "Deep Scan" on new candidates to optimize API usage.
4. Deduplication: Ensure users are not scanned twice.

Acceptance Criteria

• The script discovers and indexes high-contribution users who may not be in the top 50 repositories but are followed by top contributors.
• The resources/data.json file is populated with these new candidates.