ReadonlychainOptional ReadonlycompOptional ReadonlyeqThe built-in EQ/gate/comp, when the source config carries them — see ChannelConfig.
Optional ReadonlygateOptional ReadonlyprocessingThe strip's own facts as one block — see ChannelConfig.processing. A capture always writes
it; a factory instrument template never does, and an apply reads an absent block as "not
stated" (channel-contract spec revision 4), landing and clearing nothing that rides it.
Optional ReadonlyprocessorsThe channel's PROCESSING ARRANGEMENT — its ordered Processor chain, the fact
mixer-standard.md calls the one processing model. A config that carried the insert rack
and the EQ/gate/comp values but not the ORDER they run in was a config of a different desk:
order is load-bearing (ADR-0006) and reaches audio through the native step walk.
Absent when the provider has no structural layer to read a chain from.
One channel's reusable processing, as captured/applied by the provider.