CLI named profiles for multi-tenant support

Features

• CLI named profiles for multi-tenant support
• CLI listen command with SSE event loop and handler dispatch
• CLI commands: raw MIME retrieval, domain warmup, message events timeline, consensus get
• CLI mailbox reputation and autonomy level commands
• CLI domain rate limit and alert destinations commands
• Bulk approve HITL routing actions by intent
• Absolute scheduledAt support for sends and followups
• Prometheus /metrics endpoint for observability
• Per-domain send rate limiting
• Subject-based threading fallback for inbound email
• Alert webhook and Slack integration
• Store raw MIME for inbound emails
• Unified message_events lifecycle table
• Domain warmup status and skip endpoints
• Autonomy level column and CRUD endpoints for mailboxes
• Enforce autonomy levels in send pipeline
• Scoped API keys with PATCH endpoint
• Bearer-authed autonomy level endpoints for CLI and agent use
• Log-only mock send provider for local dev
• CLI smoke integration tests

Fixes

• Fixed batch and request-send error handling with dev mock provider
• Fixed schedule-followup 500 error from dev endpoint columns and Redis failures
• Added auth guards to segments and outcomes controllers
• Fixed walkthrough video display on mobile
• Repaired test failures from recent feature PRs
• Fixed CLI Bearer auth for autonomy commands
• Removed GoDaddy and Namecheap from Domain Connect provider list