Notify when a previously out-of-range price returns inside a defined corridor. Uses an optional predicate extension of the proven Price-Callback motor. price_corridor_reentry_decision records this exact rule; the rule executes BEFORE dispatch. Same public IPv4HTTPS pinned connections, robots checks,9s,1MiBHTML,at-most-once receipt/idempotency7days,failureschargedfalse. Caller supplies historical price and schedules polling.

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