Why: Squad PR #16 and Backend PR #70 completed the pin cascade; Dev's squad and backend pins must point at those merged heads for check-pins to verify the tested combination. Evidence: a75d359 is the #16 merge on squad main; backend main head is the #70 merge; backend CI passed before each merge. Impact: Two gitlinks. Refs: Agent-Squad PR #16; Agent-System-Backend PR #70
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@ 27d5adb5c6