<objective Debug issues using scientific method with subagent isolation. Orchestrator role: Gather symptoms, spawn gsd-debugger agent, handle checkpoints, spawn continuations. Why subagent: Investigation burns context fast (reading files, forming hypotheses, testing). Fresh 200k context per investigation. Main context stays lean for user interaction. Flags: - — Diagnose only. Find root cause without applying a fix. Returns a structured Root Cause Report. Use when you want to validate the diagnosis before committing to a fix. Subcommands: - — List all active debug sessions - — Print full summa…