Smoke run 3 showed agents auto-pausing on i_am_idle (correct behavior
for non-terminal tasks) but capturing no checkpoint — panel's
Checkpoints column stayed empty. Pre-gateway parity: the auto-pause
path now writes a synthetic checkpoint summarizing state at pause-time
so the panel reflects reality.
Manual i_will_pause (G8a, deferred) will eventually let agents pass
their own checkpoint_summary; for now this synthetic write covers the
bare i_am_idle case which is what all current agents do.
Spec ref: docs/superpowers/specs/2026-05-12-post-smoke-3-fixes-design.md
section C7.
Renn F
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