* test(#4079): guard every background-wait site against ScheduleWakeup wake-tool escape hatch
Content-contract tests over plan-phase.md, stall-detection-helpers.md, and
manager.md: every wait-instruction site must forbid ScheduleWakeup (the
host /loop tool whose partial-args call surfaces the red validation error
in #4079), while the sanctioned wait mechanisms stay byte-preserved.
* fix(#4079): forbid ScheduleWakeup wake-tool escape hatch at every background-wait site
The orchestrator could literalize 'I'll wait' by calling the host's
ScheduleWakeup tool (/loop pacing surface) with partial arguments while a
background subagent was in flight, surfacing the red validation error
'`prompt` is required when `stop` is not true.' GSD never sanctioned a
wake call; now every wait-instruction site says so explicitly: the two
synchronous stop-and-wait ORCHESTRATOR RULEs in plan-phase.md, the
stall-detection-helpers.md fragment (loaded before every gsd_stall_watch
wait), and both manager.md background-dispatch rules. The sanctioned wait
mechanisms (blocking Agent() return, gsd_stall_watch polling, dashboard
loop) are unchanged. The regression test uses the shared
readFileNormalized helper (code-review finding).
Emitted-Drift-Ack-Growth: plan-phase.md — #4079 guard sentence at the two stop-and-wait rules (+396 B, within the phase6 shrink-only line)
Emitted-Drift-Ack-Growth: manager.md — #4079 guard sentence at both background-dispatch rules
* chore(#4079): add changeset fragment (pr placeholder, backfilled after PR open)
* chore(#4079): backfill PR number in changeset
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Co-authored-by: sim <sim@local>
c27da5e993