- **Opus orchestrates, Sonnet implements.** No Opus manager layer. The orchestrator (main Claude Code session) dispatches Sonnet agents directly.
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- **Background everything.** Subagents, deploys, and tool calls run in background (`run_in_background: true`) so the orchestrator and user can keep talking.
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- **Background everything.** ALL subagents run in background (`run_in_background: true`), no exceptions — research, implementation, review, verification. The orchestrator must stay responsive to the user at all times.
- **Task list tracks the pipeline.** Each implementation task gets 5-6 task list items with dependencies. The orchestrator dispatches agents as blockers clear.
- **Rule of Two.** No subagent output is merged without independent verification by a second agent.
- **No VPS mutations outside Ansible.** Read-only SSH diagnostics only. All changes go through Ansible playbooks.