Once the key is exhausted, a terminal node completes the match; otherwise only saved wildcard branches can still succeed. No input remains to match the current node's child edges, so their starting position is unnecessary.
Defer the child-edge select in Has until more input needs matching, both after matching a byte and when restoring a wildcard. Keep the node-terminator select needed to resume saved wildcard branches.
Earlier candidate benchmarks show median query times ~3%/~1% lower for short/long queries and ~11%/~8% lower for exact/mixed-rule workloads, with no additional allocations or changes to the index layout.
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