Add exploratory mode to the spawn command that skips PR detection,
CI monitoring, and review routing. Exploratory sessions let agents
explore, prototype, and investigate without the full PR lifecycle.
- Add --exploratory flag to CLI spawn command
- Add exploratory field to SessionSpawnConfig and SessionMetadata
- Store exploratory flag in session metadata for persistence
- Skip PR/CI/review checks in lifecycle manager for exploratory sessions
- Use dedicated EXPLORATORY_AGENT_PROMPT (no PR instructions)
- Runtime liveness + session.killed events still fire normally
- Pass exploratory flag through web API spawn endpoint
- Add tests for prompt builder, lifecycle manager, and session manager
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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