When a skill in a graph workflow step emits ===FUSION_AWAIT_INPUT===,
runGraphCustomNode now parks the task awaiting-user-input with the
question (reusing the runAwaitInputNode pause/watermark model so the
dashboard input banner + task-card button surface it), and halts the
walk. On resume the node re-runs; the resume check consumes the user's
steering reply and lets the skill continue with the answer.
Pure sentinel parser unit-tested (6 cases). End-to-end pause/resume
through the graph interpreter needs verification on a running board.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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