Root quiet-lead GitHub order route discovery

Adds root llms discovery for the GitHub-native quiet-lead paid order route:

• Public order board: trungcodeer/quiet-lead-follow-up#1
• Paid order form after PayPal: https://github.com/trungcodeer/quiet-lead-follow-up/issues/new?template=paid-quiet-lead-rescue.yml
• Exact PayPal handoff: https://trungcodeer.github.io/quiet-lead-follow-up/pay-5-usd-paypal.html