Validates a whole interactions block: every member's schema-level rules
plus the two block-level ones (unique ids, fan-out cap). Disabled
interactions are validated like any other — they are retained in the
document, only skipped at dispatch — but they do NOT count toward the
fan-out cap, which bounds live dispatch work.
Validates a whole
interactionsblock: every member's schema-level rules plus the two block-level ones (unique ids, fan-out cap). Disabled interactions are validated like any other — they are retained in the document, only skipped at dispatch — but they do NOT count toward the fan-out cap, which bounds live dispatch work.