docs: integration guide — DAOs and open source communities

[basanth-p]

Summary

Write the integration guide for DAOs and open source communities using Patch ID to verify contributor reputation.

Content to cover

1. Use case — gating voting rights, contributor tiers, bounty eligibility
2. Score API — how to query a developer score by GitHub handle
3. Score-gating example — only Expert (500+) developers can vote
4. On-chain integration notes — how to use score as an off-chain oracle
5. Webhook integration — react to score changes in real time
6. Privacy — developer consent and opt-out handling

Deliverable

/guides/integrate-dao.mdx