Add support for cryptographically signed verifications (phone, email, domain, etc.) to actor profiles. This is a backwards-compatible addition. Changes: - Replace simple verified boolean with verifications array - Add verification lexicon definition with signature support - Add XRPC endpoints: requestPhone, verifyPhone, getStatus The verification array allows multiple verification types and is cryptographically signed by trusted services (e.g., did:web:coves.social). 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>