A per-channel-kind feature matrix: the set of ChannelFeatures each kind exposes. Exhaustive over ChannelKind (a Record), so a matrix can never silently omit a kind — buildTopology's capabilities look a kind up directly with no undefined gap.
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A per-channel-kind feature matrix: the set of ChannelFeatures each kind exposes. Exhaustive over ChannelKind (a
Record), so a matrix can never silently omit a kind — buildTopology's capabilities look a kind up directly with noundefinedgap.