Shake-local fork of @narumitw/pi-plan-mode.
Adds /plan-shake and --plan for a read-only planning mode that explores first, blocks mutating tools/commands, and ends with one <proposed_plan> block. Use /plan-shake again to implement, revise, configure tools, or exit.
pi install /Users/notshake/.pi/agent/packages/plan-shake/plan-shake
/plan-shake <prompt>
/plan-shake tools
/plan-shake exit