IRC Services Authentication via Fly.io Private Network

[perigrin]

User Story

Implement IRC services authentication using TDD to connect Atheme services with
the Solanum IRC server over Fly.io's private internal network. Write tests that
validate U:line configuration, services authentication, and proper privilege
escalation using internal hostname resolution.

Requirements:
- Configure Atheme services authentication with IRC server via internal network
- Implement U:line configuration for services privileges
- Validate services connection and authentication flow over private network
- Test services commands and functionality

Expected Output

• config/ircd.conf.template - Solanum IRC server configuration with U:lines
• config/atheme.conf.template - Atheme services configuration for private network
• tests/test_services_auth.pl - Services authentication tests (Perl)
• scripts/validate-services.pl - Services functionality validation (Perl)
• docs/services-integration.md - IRC services setup documentation
• Working Atheme services authenticated and operational via private network

Acceptance Criteria

• Write failing tests for services authentication and operation
• Configure Atheme services with proper authentication credentials
• Implement U:line configuration in Solanum IRC server
• Tests validate successful services connection via internal network
• Services authentication handshake completes successfully
• Services privileges and commands function correctly
• User registration and identification works
• Channel registration and management operational
• Services persistence through restarts verified
• Error handling and reconnection logic tested
• All services integration tests pass

Context

Atheme services provide user and channel management for the IRC network using Fly.io's optimized internal network for server communication. This ensures reliable, low-latency services integration while maintaining security isolation from external networks.