Record mutations (create, update, delete) no longer require admin role.
Authorization rules:
- admin: full access (unchanged)
- system mcp-agent: create/delete any record
- system account α: create/delete records named α only
- human users: read-only (unchanged)
Zone mutations remain admin-only. Both REST and gRPC paths enforce the
same rules. Update checks authorization against both old and new names.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Full integration tests exercising gRPC services through real server with
mock MCIAS auth. Covers all CRUD operations for zones and records,
health check bypass, auth/admin interceptor enforcement, CNAME
exclusivity conflicts, and method map completeness verification.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
