Plan Loop

Run a planning-aware cadence on top of Claude Code's /loop primitive.

Steps:

1. Parse args:
   • First arg matching ^\d+[smhd]$ is the interval (default 10m).
   • Remaining args are an optional task prompt.
2. Resolve the active plan as in /plan-attest.
3. Compose the loop prompt:
   • If user passed a task prompt: use it verbatim.
   • Else: use the default planning tick prompt:

     Read task_plan.md and progress.md. Run scripts/check-complete.sh to see remaining phases.
     If no progress.md entry has been added since the last loop tick, write one summarizing the current state.
     If a phase finished, update its Status: line in task_plan.md.
     Continue the next phase if work remains.
     

4. Invoke /loop <interval> <prompt>.
5. Confirm to the user: print the interval, the active plan ID, and remind that bare /loop invocation alone (without args) runs Claude Code's built-in maintenance prompt — /plan-loop differs by always grounding the tick in the planning files.

If task_plan.md does not exist, refuse and direct user to run /plan first.

Why this exists:

/loop runs prompts on cron without any plan-state contract. /plan-loop injects a plan-aware default so the recurring tick always re-reads the planning files first, runs the completion check, and writes a progress entry. Users get "babysit my plan" UX without writing a custom loop prompt.

Notes:

• /plan-loop composes with /loop; it does not replace it. /loop 5m "anything" still works.
• For "babysit until plan is done" semantics: combine /plan-loop 10m (cadence) with /plan-goal (termination criterion). The loop runs every 10 minutes; the goal stops the loop when the plan is complete.
• The default tick prompt is intentionally short so it stays within compaction-safe length.