P6: Coils/DiscreteInputs carry only Bool and register regions never Bool;
the factory (and so the deploy-gate Inspect and the AdminUI parse consult)
refuses a mismatch, and an absent dataType defaults per region (Bool for a
bit region). A HoldingRegisters+Bool tag used to throw out of the coalescing
planner and stall every tag of the subscription; the planner also skips any
incompatible pair defensively. The tag editor keeps the type compatible when
the region changes; the CLI refuses the pair up front. The array-write parity
test records the Coils divergence from DriverArrayWriteSupport (owned outside
this lane) as follow-up F1.
Refs #741
Claude-Session: https://claude.ai/code/session_01Ub9hGmYLQvn9XETzw7CMsT
Joseph Doherty
f827b3a134