Make the orchestrator a first-class managed session that flows through
the same SessionManager pipeline as worker sessions, and fix a blocking
bug where long system prompts get truncated by tmux/zsh.
Changes:
- Add OrchestratorSpawnConfig type and spawnOrchestrator() to
SessionManager interface
- Implement spawnOrchestrator() in session-manager.ts: proper
hash-based tmuxName, runtimeHandle, plugin lifecycle — no workspace
creation (uses project.path directly)
- Refactor `ao start` to use SessionManager.spawnOrchestrator()
instead of manual tmux calls + metadata writes (~80 lines removed)
- Refactor `ao stop` to use SessionManager.kill() instead of manual
tmux kill + metadata delete
- Update `ao init` next steps: guide users to `ao start` before
`ao spawn`
- Add systemPromptFile to AgentLaunchConfig for file-based system
prompts (avoids tmux truncation of 2000+ char inline prompts)
- Update agent-claude-code, agent-codex, agent-aider plugins to use
shell command substitution "$(cat '/path')" when systemPromptFile
is set
- Update runtime-tmux create() to use load-buffer/paste-buffer for
launch commands >200 chars
- Add 8 tests for spawnOrchestrator
- Fix SessionManager mock in 8 test files (add spawnOrchestrator)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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